Measurement of forward $J/\ddot{I}ˆ$ production cross-sections in $pp$ collisions at $\sqrt{s}=13$ TeV

LHCb collaboration, R. Aaij, B. Adeva +722

The production of $J/\ddot{I}ˆ$ mesons in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=13$ TeV is studied with the \lhcb detector. Cross-section measurements are perfo…

Spin dependence of η meson production in proton-proton collisions close to threshold

P. Adlarson, W. Augustyniak, W. Bardan +88

Taking advantage of the high acceptance and axial symmetry of the WASA-at-COSY detector, and the high degree of the polarized proton beam of COSY, the reaction pp{\to} ppη has bee…

Observations of $\hat{I}{›}_b^0\to \hat{I}›K^{+}\ddot{I}{€}^{-}$ and $\hat{I}{›}_b^0\to \hat{I}›K^{+}{K}^{-}$ decays and searches for other $\hat{I}{›}_b^0$ and $\hat{I}{ž}_b^0$ decays to $\hat{I}›h^{+}{h}^{\prime -}$ final states

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

A search is performed for the charmless three-body decays of the $\hat{I}{›}_b^0$ and $\hat{I}{ž}_b^0$ baryons to the final states $\hat{I}›h^{+}{h}^{\prime -}$, where $h^{(\prime )}=\ddot{I}€$ or $K$. The analys…

A model-independent confirmation of the $Z(4430{)}^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +723

The decay $B^0\to \ddot{I}ˆ(2S)K^{+}\ddot{I}{€}^{-}$ is analyzed using $3\mathrm{f}{\mathrm{b}}^{-1}$ of $pp$ collision data collected with the LHCb detector. A model-independent description of the $\ddot{I}ˆ(2S)\ddot{I}€$ mass…

Study of the $D^{0}p$ amplitude in $\hat{I}{›}_b^0\to D^{0}p\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +764

An amplitude analysis of the decay $\hat{I}{›}_b^0\to D^{0}p\ddot{I}{€}^{-}$ is performed in the part of the phase space containing resonances in the $D^{0}p$ channel. The study is based on a data sam…

Measurement of forward $W$ and $Z$ boson production in $pp$ collisions at $\sqrt{s}=8\mathrm{Te}\mathrm{V}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

Measurements are presented of electroweak boson production using data from $pp$ collisions at a centre-of-mass energy of $\sqrt{s}=8\mathrm{Te}\mathrm{V}$. The analysis is…

Observation of $D^0$ meson decays to $\ddot{I}{€}^{+}\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $K^{+}{K}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ final states

LHCb collaboration, R. Aaij, B. Adeva +801

The first observation of the $D^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $D^0\to K^{+}{K}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-…

Amplitude analysis of $B^{-}\to D^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +763

The Dalitz plot analysis technique is used to study the resonant substructures of $B^{-}\to D^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{-}$ decays in a data sample corresponding to 3.0 ${\mathrm{fb}}^{-1}$ of $p…

Identification of beauty and charm quark jets at LHCb

LHCb collaboration, R. Aaij, B. Adeva +714

Identification of jets originating from beauty and charm quarks is important for measuring Standard Model processes and for searching for new physics. The performance of algorithms…

Model-independent measurement of the CKM angle ${\hat{I}}^3$ using $B^0\to D{K}^{\ast 0}$ decays with $D\to K_S^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $K_S^0{K}^{+}{K}^{-}$

R. Aaij, C. Abellán Beteta, B. Adeva +727

A binned Dalitz plot analysis of the decays $B^0\to D{K}^{\ast 0}$, with $D\to K_S^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and $K_S^0{K}^{+}{K}^{-}$, is performed to measure the observables $x_\pm…

Measurement of forward $t\overline{t}$, $W+b\overline{b}$ and $W+c\overline{c}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +767

The production of $t\overline{t}$, $W+b\overline{b}$ and $W+c\overline{c}$ is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 Te…

Observation of the $\hat{I}{›}_b^0\to \hat{I}›\ddot{I}•$ decay

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The $\hat{I}{›}_b^0\to \hat{I}›\ddot{I}•$ decay is observed using data corresponding to an integrated luminosity of 3.0fb${}^{-1}$ recorded by the LHCb experiment. The decay proceeds at leading order via…

Model-independent measurement of mixing parameters in $D^0\to K_S\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +724

The first model-independent measurement of the charm mixing parameters in the decay $D^0\to K_S\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ is reported, using a sample of $pp$ collision data recorded by the LHCb…

Evidence for the two-body charmless baryonic decay $B^{+}\to p\bar{\hat{I}}›$

LHCb collaboration, R. Aaij, B. Adeva +767

A search for the rare two-body charmless baryonic decay $B^{+}\to p\bar{\hat{I}}›$ is performed with $pp$ collision data, corresponding to an integrated luminosity of $3\,\mbox{fb}^{-1}$,…

Production of associated $\hat{I}\yen$ and open charm hadrons in $pp$ collisions at $\sqrt{s}=7$ and $8$TeV via double parton scattering

LHCb collaboration, R. Aaij, C. Abellán Beteta +724

Associated production of bottomonia and open charm hadrons in $pp$ collisions at $\sqrt{s}=7$ and $8$TeV is observed using data corresponding to an integrated luminosity of 3$fb^{-…

Observation of the decays $\hat{I}{›}_b^0\to \ddot{I}{‡}_{c1}p{K}^{-}$ and $\hat{I}{›}_b^0\to \ddot{I}{‡}_{c2}p{K}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +776

The first observation of the decays $\hat{I}{›}_b^0\to \ddot{I}{‡}_{c1}p{K}^{-}$ and $\hat{I}{›}_b^0\to \ddot{I}{‡}_{c2}p{K}^{-}$ is reported using a data sample corresponding to an integrated luminosity of $3.0$ fb$…

Measurement of the ratio of branching fractions $\mathcal{B}({\overline{B}}^0\to D^{\ast +}\ddot{I}{„}^{-}\overline{\hat{I}}{½}_{\ddot{I}}„)/\mathcal{B}({\overline{B}}^0\to D^{\ast +}\hat{I}{¼}^{-}\overline{\hat{I}}{½}_{\hat{I}}¼)$

LHCb collaboration, R. Aaij, B. Adeva +722

The branching fraction ratio $\mathcal{R}(D^{\ast })\equiv \mathcal{B}({\overline{B}}^0\to D^{\ast +}\ddot{I}{„}^{-}\overline{\hat{I}}{½}_{\ddot{I}}„)/\mathcal{B}({\overline{B}}^0\to D^{\ast +}\hat{I}{¼}^{-}\overline{\hat{I}}{½}_{\hat{I}}¼)$ is me…

Search for the lepton-flavour violating decays $B_{(s)}^0\to e^{\pm }\hat{I}{¼}^{\mp }$

LHCb collaboration, R. Aaij, B. Adeva +799

A search for the lepton-flavour violating decays $B_s^0\to e^{\pm }\hat{I}{¼}^{\mp }$ and $B^0\to e^{\pm }\hat{I}{¼}^{\mp }$ is performed based on a sample of proton-proton collision data…

Measurement of forward $W\to e\hat{I}½$ production in $pp$ collisions at $\sqrt{s}=8$TeV

LHCb collaboration, R. Aaij, B. Adeva +763

A measurement of the cross-section for $W\to e\hat{I}½$ production in $pp$ collisions is presented using data corresponding to an integrated luminosity of $2$fb${}^{-1}$ collected by th…

Measurement of the forward Z boson production cross-section in pp collisions at $\sqrt{s}=13$ TeV

LHCb collaboration, R. Aaij, B. Adeva +759

A measurement of the production cross-section of Z bosons in pp collisions at $\sqrt{s}=13$ TeV is presented using dimuon and dielectron final states in LHCb data. The cross-sect…

First study of the CP-violating phase and decay-width difference in $B_s^0\to \ddot{I}ˆ(2S)\ddot{I}•$ decays

LHCb collaboration, R. Aaij, B. Adeva +765

A time-dependent angular analysis of $B_s^0\to \ddot{I}ˆ(2S)\ddot{I}•$ decays is performed using data recorded by the LHCb experiment. The data set corresponds to an integrated luminosity of 3.0\…

Measurement of the $\hat{I}\yen$ polarizations in $pp$ collisions at $\sqrt{s}$=7 and 8TeV

LHCb collaboration, R. Aaij, B. Adeva +801

The polarization of the $\hat{I}\yen (1S)$, $\hat{I}\yen (2S)$ and $\hat{I}\yen (3S)$mesons, produced in $pp$ collisions at centre-of-mass energies $\sqrt{s}$=7 and 8TeV, is measured using data samples collect…

Measurement of the $CP$ asymmetry in $B_s^0-\overline{B}{}_s^0$ mixing

LHCb collaboration, R. Aaij, B. Adeva +735

The $CP$ asymmetry in the mixing of $B_s^0$ and $\overline{B}{}_s^0$ mesons is measured in proton-proton collision data corresponding to an integrated luminosity of 3.0 fb${}^{-1}$,…

Search for the Hypothetical pi -> mu x Decay

R. Bilger, H. Clement, A. Denig +12

The KARMEN collaboration has reported the possible observation of a hitherto unknown neutral and weakly interacting particle x, which is produced in the decay pi -> mu + x with a m…

Search for dark photons produced in 13 TeV $pp$ collisions

LHCb collaboration, R. Aaij, B. Adeva +796

Searches are performed for both prompt-like and long-lived dark photons, $A^{\prime }$, produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using $A^{\prime}\…

Measurement of the $B^{\pm }$ production cross-section in pp collisions at $\sqrt{s}=$ 7 and 13 TeV

LHCb collaboration, R. Aaij, B. Adeva +796

The production of $B^{\pm }$ mesons is studied in $pp$ collisions at centre-of-mass energies of 7 and 13 TeV, using $B^{\pm }\to J/\ddot{I}ˆK^{\pm }$ decays and data samples correspo…

Search for the decays $B_s^0\to \ddot{I}{„}^{+}\ddot{I}{„}^{-}$ and $B^0\to \ddot{I}{„}^{+}\ddot{I}{„}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +775

A search for the rare decays $B_s^0\to \ddot{I}{„}^{+}\ddot{I}{„}^{-}$ and $B^0\to \ddot{I}{„}^{+}\ddot{I}{„}^{-}$ is performed using proton--proton collision data collected with the LHCb detector. The data sample corresponds…

Angular analysis and differential branching fraction of the decay $B_s^0\to \ddot{I}•\hat{I}{¼}^{+}\hat{I}{¼}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +722

An angular analysis and a measurement of the differential branching fraction of the decay $B_s^0\to \ddot{I}•\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ are presented, using data corresponding to an integrated luminosity o…

Observation of the annihilation decay mode $B^0\to K^{+}{K}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +765

A search for the $B^0\to K^{+}{K}^{-}$ decay is performed using $pp$-collision data collected by LHCb. The data set corresponds to integrated luminosities of 1 and 2 fb${}^{-1}$ at c…

Observation of the ${\Xi }_b^{-}\to J/\ddot{I}ˆ\Lambda K^{-}$ decay

LHCb collaboration, R. Aaij, B. Adeva +764

The observation of the decay ${\Xi }_b^{-}\to J/\ddot{I}ˆ\Lambda K^{-}$ is reported, using a data sample corresponding to an integrated luminosity of $3{\mathrm{fb}}^{-1}$, collected…

Study of $W$ boson production in association with beauty and charm

LHCb collaboration, R. Aaij, B. Adeva +722

The associated production of a $W$ boson with a jet originating from either a light parton or heavy-flavor quark is studied in the forward region using proton-proton collisions. Th…

Observation of $J/\ddot{I}ˆp$ resonances consistent with pentaquark states in $\hat{I}{›}_b^0\to J/\ddot{I}ˆK^{-}p$ decays

LHCb collaboration, R. Aaij, B. Adeva +720

Observations of exotic structures in the $J/\ddot{I}ˆp$ channel, that we refer to as pentaquark-charmonium states, in $\hat{I}{›}_b^0\to J/\ddot{I}ˆK^{-}p$ decays are presented. The data sample correspon…

First observation of the rare $B^{+}\to D^{+}{K}^{+}\ddot{I}{€}^{-}$ decay

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The $B^{+}\to D^{+}{K}^{+}\ddot{I}{€}^{-}$ decay is observed in a data sample corresponding to $3.0{\mathrm{fb}}^{-1}$ of $pp$ collision data recorded by the LHCb experiment during 2011 and 20…

Measurement of $B_s^0$ and $D_s^{-}$ meson lifetimes

LHCb collaboration, R. Aaij, B. Adeva +774

We report on a measurement of the flavor-specific $B_s^0$ lifetime and of the $D_s^{-}$ lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, col…

Measurements of prompt charm production cross-sections in $pp$ collisions at $\sqrt{s}=13\mathrm{TeV}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +724

Production cross-sections of prompt charm mesons are measured with the first data from $pp$ collisions at the LHC at a centre-of-mass energy of $13\mathrm{TeV}$. The data sample…

Measurement of the CKM angle ${\hat{I}}^3$ from a combination of LHCb results

LHCb collaboration, R. Aaij, B. Adeva +765

A combination of measurements sensitive to the CKM angle ${\hat{I}}^3$ from LHCb is performed. The inputs are from analyses of time-integrated $B^{+}\to D{K}^{+}$, $B^{0} \rightarrow D…

Observation of the decay $\hat{I}{ž}_b^{-}\to p{K}^{-}{K}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +764

Decays of the $\hat{I}{ž}_b^{-}$ and $\hat{I}{\text{c◯}}_b^{-}$ baryons to the charmless final states $p{h}^{-}{h}^{\prime -}$, where $h^{(\prime )}$ denotes a kaon or pion, are searched for with the LHCb detecto…

Measurement of $CP$ asymmetry in $D^0\to K^{-}{K}^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +763

A measurement of the time-integrated $CP$ asymmetry in the Cabibbo-suppressed decay $D^0\to K^{-}{K}^{+}$ is performed using pp collision data, corresponding to an integrated lum…

Test of lepton universality with $B^0\to K^{\ast 0}{\ell }^{+}{\ell }^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +785

A test of lepton universality, performed by measuring the ratio of the branching fractions of the $B^0\to K^{\ast 0}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $B^0\to K^{\ast 0}{e}^{+}{e}^{-}$ de…

Study of $B_c^{+}$ decays to the $K^{+}{K}^{-}\ddot{I}{€}^{+}$ final state and evidence for the decay $B_c^{+}\to \ddot{I}{‡}_{c0}\ddot{I}{€}^{+}$

LHCb collaboration, R. Aaij, B. Adeva +761

A study of $B_c^{+}\to K^{+}{K}^{-}\ddot{I}{€}^{+}$ decays is performed for the first time using data corresponding to an integrated luminosity of 3.0 ${\mathrm{fb}}^{-1}$ collected by the LHCb experim…

Measurement of the time-integrated $CP$ asymmetry in $D^0\to K_S^0{K}_S^0$ decays

LHCb collaboration, R. Aaij, B. Adeva +722

The time-integrated $CP$ asymmetry in the decay $D^0\to K_S^0{K}_S^0$ is measured using $3f{b}^{-1}$ of proton-proton collision data collected by the LHCb experiment at centre-of-ma…

Observation of $\hat{I}{›}_b^0\to \ddot{I}ˆ(2S)p{K}^{-}$ and $\hat{I}{›}_b^0\to J/\ddot{I}ˆ\ddot{I}{€}^{+}\ddot{I}{€}^{-}p{K}^{-}$ decays and a measurement of the $\hat{I}{›}_b^0$ baryon mass

LHCb collaboration, R. Aaij, C. Abellán Beteta +733

The decays $\hat{I}{›}_b^0\to \ddot{I}ˆ(2S)p{K}^{-}$ and $\hat{I}{›}_b^0\to J/\ddot{I}ˆ\ddot{I}{€}^{+}\ddot{I}{€}^{-}p{K}^{-}$ are observed in a data sample corresponding to an integrated luminosity of 3fb${}^{-1}$, collected in proton-…

Forward production of $\hat{I}\yen$ mesons in $pp$ collisions at $\sqrt{s}=7$ and 8TeV

LHCb collaboration, R. Aaij, B. Adeva +720

The production of $\hat{I}\yen$ mesons in $pp$ collisions at $\sqrt{=}7$ and $8\mathrm{TeV}$ is studied with the LHCb detector using data samples corresponding to an integrated luminosity o…

Measurement of the $J/\ddot{I}ˆ$ pair production cross-section in $pp$ collisions at $\sqrt{s}=13\mathrm{TeV}$

LHCb collaboration, R. Aaij, B. Adeva +763

The production cross-section of $J/\ddot{I}ˆ$ pairs is measured using a data sample of $pp$ collisions collected by the LHCb experiment at a centre-of-mass energy of $\sqrt{s} = 13 \,{\ma…

Measurement of the forward-backward asymmetry in $Z/γ^{\ast} \rightarrow μ^{+}μ^{-}$ decays and determination of the effective weak mixing angle

LHCb collaboration, R. Aaij, B. Adeva +722

The forward-backward charge asymmetry for the process $q\bar{q} \rightarrow Z/γ^{\ast} \rightarrow μ^{+}μ^{-}$ is measured as a function of the invariant mass of the dimuon syst…

Measurement of the $B_s^0\to J/\ddot{I}ˆ\hat{I}\cdot$ lifetime

LHCb collaboration, R. Aaij, B. Adeva +753

Using a data set corresponding to an integrated luminosity of $3f{b}^{-1}$, collected by the LHCb experiment in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the effect…

Measurement of matter-antimatter differences in beauty baryon decays

LHCb collaboration, R. Aaij, B. Adeva +762

Differences in the behaviour of matter and antimatter have been observed in $K$ and $B$ meson decays, but not yet in any baryon decay. Such differences are associated with the non-…

Study of $D_{sJ}^{(\ast )+}$ mesons decaying to $D^{\ast +}{K}_{\mathrm{S}}^0$ and $D^{\ast 0}{K}^{+}$ final states

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

A search is performed for $D_{sJ}^{(\ast )+}$ mesons in the reactions $pp\to D^{\ast +}{K}_{\mathrm{S}}^{0}X$ and $pp\to D^{\ast 0}{K}^{+}X$ using data collected at centre-of-mass energies of 7 and 8…

Measurement of branching fractions of charmless four-body $\hat{I}{›}_b^0$ and $\hat{I}{ž}_b^0$ decays

LHCb collaboration, R. Aaij, B. Adeva +794

A search for charmless four-body decays of $\hat{I}{›}_b^0$ and $\hat{I}{ž}_b^0$ baryons with a proton and three charged mesons (either kaons or pions) in the final state is performed. The…

First observation of the decay $D^0\to K^{-}\ddot{I}{€}^{+}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ in the $\ddot{I}{}^0$-$\ddot{I}‰$ region of the dimuon mass spectrum

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

A study of the decay $D^0\to K^{-}\ddot{I}{€}^{+}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ is performed using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 8 T…

Amplitude analysis of the decay ${\overline{B}}^0\to K_S^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and first observation of the CP asymmetry in ${\overline{B}}^0\to K^{\ast }(892{)}^{-}\ddot{I}{€}^{+}$

LHCb collaboration, R. Aaij, B. Adeva +794

The time-integrated Dalitz plot of the three-body hadronic charmless decay ${\overline{B}}^0\to K_{\mathrm{S}}^0\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ is studied using a $pp$ collision da…

Amplitude analysis of $B^{+}\to J/\ddot{I}ˆ\ddot{I}•K^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +751

The first full amplitude analysis of $B^{+}\to J/\ddot{I}ˆ\ddot{I}•K^{+}$ with $J/\ddot{I}ˆ\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$, $\ddot{I}•\to K^{+}{K}^{-}$ decays is performed with a data sample of 3 fb${}^{-1}$ of $pp$ collision data collecte…

Test of Lepton Flavor Universality by the measurement of the $B^0\to D^{\ast -}\ddot{I}{„}^{+}\hat{I}{½}_{\ddot{I}}„$ branching fraction using three-prong $\ddot{I}„$ decays

LHCb collaboration, R. Aaij, B. Adeva +806

The ratio of branching fractions $\mathcal{R}(D^{\ast -})\equiv \mathcal{B}(B^0\to D^{\ast -}\ddot{I}{„}^{+}\hat{I}{½}_{\ddot{I}}„)/\mathcal{B}(B^0\to D^{\ast -}\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼)$ is measured using a data sample of proton-proton…

Study of charmonium production in $b$-hadron decays and first evidence for the decay $B_s^0\to \ddot{I}•\ddot{I}•\ddot{I}•$

LHCb collaboration, R. Aaij, B. Adeva +769

Using decays to $\ddot{I}•$-meson pairs, the inclusive production of charmonium states in $b$-hadron decays is studied with $pp$ collision data corresponding to an integrated luminosity o…

Measurement of the branching fraction ratio $\mathcal{B}(B_c^{+}\to \ddot{I}ˆ(2S)\ddot{I}{€}^{+})/\mathcal{B}(B_c^{+}\to J/\ddot{I}ˆ\ddot{I}{€}^{+})$

LHCb collaboration, R. Aaij, B. Adeva +721

Using $pp$ collision data collected by LHCb at center-of-mass energies $\sqrt{s}$ = 7 TeV and 8 TeV, corresponding to an integrated luminosity of 3 fb${}^{-1}$, the ratio of the bran…

Search for the $B_s^0\to \hat{I}{\cdot }^{\prime }\ddot{I}•$ decay

LHCb collaboration, R. Aaij, B. Adeva +763

A search for the charmless $B_s^0\to \hat{I}{\cdot }^{\prime }\ddot{I}•$ decay is performed using $pp$ collision data collected by the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV…

Evidence for exotic hadron contributions to $\hat{I}{›}_b^0\to J/\ddot{I}ˆp\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +739

A full amplitude analysis of $\hat{I}{›}_b^0\to J/\ddot{I}ˆp\ddot{I}{€}^{-}$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an in…

First observation of $D^0-{\bar{D}}^0$ oscillations in $D^0\to K^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays and measurement of the associated coherence parameters

LHCb collaboration, R. Aaij, C. Abellán Beteta +733

Charm meson oscillations are observed in a time-dependent analysis of the ratio of $D^0\to K^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ to $D^0\to K^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}$ decay rates, using data corresponding to an…

Measurement of the $B_s^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ branching fraction and effective lifetime and search for $B^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +771

A search for the rare decays $B_s^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $B^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ is performed at the LHCb experiment using data collected in $pp$ collisions corresponding to a total integrated…

First observation of the decay $B_s^0\to K_S^0{K}^{\ast }(892{)}^0$

LHCb collaboration, R. Aaij, B. Adeva +713

A search for $B_{(s)}^0\to K_S^0{K}^{\ast }(892{)}^0$ decays is performed using $pp$ collision data, corresponding to an integrated luminosity of $1.0{\text{fb}}^{-1}$, collected…

Search for $CP$ violation in the phase space of $D^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +769

A search for time-integrated $CP$ violation in the Cabibbo-suppressed decay $\mbox{$D^0\rightarrowπ^+π^-π^+π^-$}$ is performed using an unbinned, model-independent technique kn…

Observation of $B_s^0\to {\bar{D}}^0{K}_S^0$ and evidence for $B_s^0\to {\bar{D}}^{\ast 0}{K}_S^0$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

The first observation of the $B_s^0\to {\bar{D}}^0{K}_S^0$ decay mode and evidence for the $B_s^0\to {\bar{D}}^{\ast 0}{K}_S^0$ decay mode are reported. The data sample corresponds to an integ…

Study of the production of $\hat{I}{›}_b^0$ and ${\overline{B}}^0$ hadrons in $pp$ collisions and first measurement of the $\hat{I}{›}_b^0\to J/\ddot{I}ˆp{K}^{-}$ branching fraction

LHCb collaboration, R. Aaij, B. Adeva +722

The product of the $\hat{I}{›}_b^0$ (${\overline{B}}^0$) differential production cross-section and the branching fraction of the decay $\hat{I}{›}_b^0\to J/\ddot{I}ˆp{K}^{-}$ ($\overline{B}^0\rightarro…

Study of $b\bar{b}$ correlations in high energy proton-proton collisions

LHCb collaboration, R. Aaij, B. Adeva +802

Kinematic correlations for pairs of beauty hadrons, produced in high energy proton-proton collisions, are studied. The data sample used was collected with the LHCb experiment at ce…

Search for structure in the $B_s^0\ddot{I}{€}^{\pm }$ invariant mass spectrum

LHCb collaboration, R. Aaij, B. Adeva +761

The $B_s^0\ddot{I}{€}^{\pm }$ invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb det…

Observation of charmless baryonic decays $B_{(s)}^0\to p\overline{p}{h}^{+}{h}^{\prime -}$

LHCb collaboration, R. Aaij, B. Adeva +770

Decays of $B^0$ and $B_s^0$ mesons to the charmless baryonic final states $p\overline{p}{h}^{+}{h}^{\prime -}$, where $h$ and $h^{\prime }$ each denote a kaon or a pion, are searched fo…

Search for decays of neutral beauty mesons into four muons

LHCb collaboration, R. Aaij, B. Adeva +768

A search for the non-resonant decays $B_s^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ and $B^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ is presented. The measurement is performed using th…

Measurement of the mass and lifetime of the $\hat{I}{\text{c◯}}_b^{-}$ baryon

R. Aaij, C. Abellán Beteta, B. Adeva +727

A proton-proton collision data sample, corresponding to an integrated luminosity of 3 fb${}^{-1}$ collected by LHCb at $\sqrt{s}=7$ and 8 TeV, is used to reconstruct $63\pm 9$ $Ω_b^-…

Improved limit on the branching fraction of the rare decay $K_S^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +767

A search for the decay $K_S^0\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ is performed, based on a data sample of proton-proton collisions corresponding to an integrated luminosity of 3 fb$^{…

Angular analysis of the $B^0\to K^{\ast 0}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay using $3\,\mbox{fb}^{-1}$ of integrated luminosity

LHCb collaboration, R. Aaij, C. Abellán Beteta +730

An angular analysis of the $B^0\to K^{\ast 0}(\to K^{+}\ddot{I}{€}^{-})\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay is presented. The dataset corresponds to an integrated luminosity of $3.0\,{\mbox{fb…

Measurement of the ratio of branching fractions $\mathcal{B}(B_c^{+}\to J/\ddot{I}ˆK^{+})/\mathcal{B}(B_c^{+}\to J/\ddot{I}ˆ\ddot{I}{€}^{+})$

LHCb collaboration, R. Aaij, B. Adeva +755

The ratio of branching fractions $R_{K/\ddot{I}€}\equiv \mathcal{B}(B_c^{+}\to J/\ddot{I}ˆK^{+})/\mathcal{B}(B_c^{+}\to J/\ddot{I}ˆ\ddot{I}{€}^{+})$ is measured with $pp$ collision data collected by the…

Observation of $B_c^{+}\to J/\ddot{I}ˆD^{(\ast )}{K}^{(\ast )}$ decays

LHCb collaboration, R. Aaij, B. Adeva +764

A search for the decays $B_c^{+}\to J/\ddot{I}ˆD^{(\ast )0}{K}^{+}$ and $B_c^{+}\to J/\ddot{I}ˆD^{(\ast )+}{K}^{\ast 0}$ is performed with data collected at the LHCb experiment corresponding to an integrated lumi…

Measurement of $CP$ violation parameters and polarisation fractions in $B_s^0\to J/\ddot{I}ˆ{\overline{K}}^{\ast 0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +721

The first measurement of $CP$ asymmetries in the decay $B_s^0\to J/\ddot{I}ˆ{\overline{K}}^{\ast }(892{)}^0$ and an updated measurement of its branching fraction and polarisation fraction…

Search for the $\hat{I}\cdot$ mesic ${}^3$He in the $pd\to dp\ddot{I}{€}^0$ reaction with the WASA-at-COSY facility

P. Adlarson, W. Augustyniak, M. Bashkanov +80

The excitation function for the $pd\to$ $dp\ddot{I}{€}^0$ reaction has been measured by WASA-at-COSY experiment with the aim of searching for $^{3}\hspace{-0.03cm}\mbox{He}$-$η…

Resonances and $CP$ violation in $B_s^0$ and ${\overline{B}}_s^0\to J/\ddot{I}ˆK^{+}{K}^{-}$ decays in the mass region above the $\ddot{I}•(1020)$

LHCb collaboration, R. Aaij, B. Adeva +770

The decays of $B_s^0$ and ${\overline{B}}_s^0$ mesons into the $J/\ddot{I}ˆK^{+}{K}^{-}$ final state are studied in the $K^{+}{K}^{-}$ mass region above the $\ddot{I}•(1020)$ meson in order to determine the r…

Study of Three-Nucleon Dynamics in the dp breakup collisions using the WASA detector

P. Adlarson, W. Augustyniak, W. Bardan +86

Differential cross section for the 1H(d,pp)n breakup reaction at deuteron beam energy of 340 MeV has been measured with the use of WASA detector at COSY-Juelich. The set of proton-…

Measurement of $CP$ violation in $B^0\to D^{+}{D}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +767

The $CP$ violation observables $S$ and $C$ in the decay channel $B^0\to D^{+}{D}^{-}$ are determined from a sample of proton-proton collisions at center-of-mass energies of 7…

Differential branching fraction and angular moments analysis of the decay $B^0\to K^{+}\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ in the $K_{0,2}^{\ast }(1430{)}^0$ region

LHCb collaboration, R. Aaij, B. Adeva +762

Measurements of the differential branching fraction and angular moments of the decay $B^0\to K^{+}\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ in the $K^{+}\ddot{I}{€}^{-}$ invariant mass range $1330<m(K^+ π^-)<1530~MeV/c…

First experimental study of photon polarization in radiative $B_s^0$ decays

LHCb collaboration, R. Aaij, B. Adeva +765

The polarization of photons produced in radiative $B_s^0$ decays is studied for the first time. The data are recorded by the LHCb experiment in $pp$ collisions corresponding to…

Study of $\ddot{I}ˆ(2S)$ production and cold nuclear matter effects in pPb collisions at $\sqrt{s_{NN}}=5\mathrm{TeV}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +732

The production of $\ddot{I}ˆ(2S)$ mesons is studied in dimuon final states using proton-lead collision data collected by the LHCb detector. The data sample corresponds to an integrated lu…

Updated branching fraction measurements of $B_{(s)}^0\to K_{\mathrm{S}}^0{h}^{+}{h}^{\prime -}$ decays

LHCb collaboration, R. Aaij, B. Adeva +776

The charmless three-body decays $B_{(s)}^0\to K_{\mathrm{S}}^0{h}^{+}{h}^{\prime -}$ (where $h^{(\prime )}=\ddot{I}€,K$) are analysed using a sample of $pp$ collision da…

Observation of the suppressed decay $\hat{I}{›}_b^0\to p\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +768

The suppressed decay $\hat{I}{›}_b^0\to p\ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$, excluding the $J/\ddot{I}ˆ$ and $\ddot{I}ˆ(2S)\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$ resonances, is observed for the first time with a signif…

Measurement of the $CP$ violation parameter $A_{\hat{I}}“$ in $D^0\to K^{+}{K}^{-}$ and $D^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +769

Asymmetries in the time-dependent rates of $D^0\to K^{+}{K}^{-}$ and $D^0\to \ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays are measured in a $pp$ collision data sample collected with the LHCb detector during LHC R…

Observation of $B^{+}\to J/\ddot{I}ˆ3\ddot{I}{€}^{+}2\ddot{I}{€}^{-}$ and $B^{+}\to \ddot{I}ˆ(2S)\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +767

The decays $B^{+}\to J/\ddot{I}ˆ3\ddot{I}{€}^{+}2\ddot{I}{€}^{-}$ and $B^{+}\to \ddot{I}ˆ(2S)\ddot{I}{€}^{+}\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ are observed for the first time using a data sample corresponding to an integrated luminosity o…

Measurement of the $B_s^0\to \ddot{I}•\ddot{I}•$ branching fraction and search for the decay $B^0\to \ddot{I}•\ddot{I}•$

LHCb collaboration, R. Aaij, B. Adeva +724

Using a dataset corresponding to an integrated luminosity of 3.0 fb${}^{-1}$ collected in $pp$ collisions at centre-of-mass energies of 7 and 8 TeV, the $B_s^0\to \ddot{I}•\ddot{I}•$ branching fr…

Amplitude analysis of $B^0\to {\bar{D}}^0{K}^{+}\ddot{I}{€}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +716

The Dalitz plot distribution of $B^0\to {\bar{D}}^0{K}^{+}\ddot{I}{€}^{-}$ decays is studied using a data sample corresponding to $3.0{\mathrm{fb}}^{-1}$ of $pp$ collision data recorded by the…

Observation of the decay $B_s^0\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and evidence for $B^0\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +764

The first observation of the rare decay$B_s^0\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ and evidence for $B^0\to \ddot{I}•\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ are reported, using $pp$ collision data recorded by the LHCb detector at centre-…

Measurement of forward $W$ and $Z$ boson production in association with jets in proton-proton collisions at $\sqrt{s}=8$ TeV

LHCb collaboration, R. Aaij, C. Abellán Beteta +739

The production of $W$ and $Z$ bosons in association with jets is studied in the forward region of proton-proton collisions collected at a centre-of-mass energy of 8 TeV by the LHCb…

Measurement of the $b$-quark production cross-section in 7 and 13 TeV $pp$ collisions

LHCb collaboration, R. Aaij, B. Adeva +766

Measurements of the cross-section for producing \bquark quarks in the reaction $pp\to b\bar{b}X$ are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapi…

First observation of forward $Z\to b\bar{b}$ production in $pp$ collisions at $\sqrt{s}=8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +804

The decay $Z\to b\bar{b}$ is reconstructed in $pp$ collision data, corresponding to 2 fb${}^{-1}$ of integrated luminosity, collected by the LHCb experiment at a centre-of-…

Measurement of the $B^{\pm }$ production asymmetry and the $CP$ asymmetry in $B^{\pm }\to J/\ddot{I}ˆK^{\pm }$ decays

LHCb collaboration, R. Aaij, B. Adeva +764

The $B^{\pm }$ meson production asymmetry in $pp$ collisions is measured using $B^{+}\to {\bar{D}}^0\ddot{I}{€}^{+}$ decays. The data were recorded by the LHCb experiment during Run 1 of the LHC…

Search for the rare decays $B^0\to J/\ddot{I}ˆ{\hat{I}}^3$ and $B_s^0\to J/\ddot{I}ˆ{\hat{I}}^3$

LHCb collaboration, R. Aaij, C. Abellán Beteta +725

A search for the rare decay of a $B^0$ or $B_s^0$ meson into the final state $J/\ddot{I}ˆ{\hat{I}}^3$ is performed, using data collected by the LHCb experiment in $pp$ collisions at $\sqrt{s…

Search for the suppressed decays $B^{+}\to K^{+}{K}^{+}\ddot{I}{€}^{-}$ and $B^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^{+}{K}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +761

A search is made for the highly-suppressed B meson decays $B^{+}\to K^{+}{K}^{+}\ddot{I}{€}^{-}$ and $B^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^{+}{K}^{-}$ using a data sample corresponding to an integ…

Measurements of long-range near-side angular correlations in $\sqrt{s_{\text{NN}}}=5$TeV proton-lead collisions in the forward region

LHCb collaboration, R. Aaij, C. Abellán Beteta +732

Two-particle angular correlations are studied in proton-lead collisions at a nucleon-nucleon centre-of-mass energy of $\sqrt{s_{\text{NN}}}=5$TeV, collected with the LHCb detector…

Study of $J/\ddot{I}ˆ$ production in jets

LHCb collaboration, R. Aaij, B. Adeva +774

The production of $J/\ddot{I}ˆ$ mesons in jets is studied in the forward region of proton-proton collisions using data collected with the LHCb detector at a center-of-mass energy of 13 Te…

Observation of the decay $B_s^0\to \hat{I}{\cdot }_c\ddot{I}•$ and evidence for $B_s^0\to \hat{I}{\cdot }_c\ddot{I}{€}^{+}\ddot{I}{€}^{-}$

LHCb collaboration, R. Aaij, B. Adeva +762

A study of $B_s^0\to \hat{I}{\cdot }_c\ddot{I}•$ and $B_s^0\to \hat{I}{\cdot }_c\ddot{I}{€}^{+}\ddot{I}{€}^{-}$ decays is performed using $pp$ collision data corresponding to an integrated luminosity of 3.0$\,\rm fb…

Search for hidden-sector bosons in $B^0\to K^{\ast 0}\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +724

A search is presented for hidden-sector bosons, $\ddot{I}‡$, produced in the decay $B^0\to K^{\ast }(892{)}^0\ddot{I}‡$, with $K^{\ast }(892{)}^0\to K^{+}\ddot{I}{€}^{-}$ and $\ddot{I}‡\to \hat{I}{¼}^{+}\hat{I}{¼}^{-}$. The search is perfo…

First measurement of the differential branching fraction and $CP$ asymmetry of the $B^{\pm }\to \ddot{I}{€}^{\pm }\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay

LHCb collaboration, R. Aaij, B. Adeva +723

The differential branching fraction with respect to the dimuon invariant mass squared, and the $CP$ asymmetry of the $B^{\pm }\to \ddot{I}{€}^{\pm }\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay are measured for the first tim…

Search for the lepton-flavour violating decay $D^0\to e^{\pm }\hat{I}{¼}^{\mp }$

LHCb collaboration, R. Aaij, B. Adeva +720

A search for the lepton-flavour violating decay $D^0\to e^{\pm }\hat{I}{¼}^{\mp }$ is made with a dataset corresponding to an integrated luminosity of 3.0 fb${}^{-1}$ of proton-proton collisions…

Observation of five new narrow $\hat{I}{\text{c◯}}_c^0$ states decaying to $\hat{I}{ž}_c^{+}{K}^{-}$