T. Williams

Test of lepton universality with $I^_{b}^{0} \to p K^{-} ℓ^{+} ℓ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +904

The ratio of branching fractions of the decays $I^_{b}^{0} \to p K^{-} e^{+} e^{-}$ and $I^_{b}^{0} \to p K^{-} I^¼^{+} I^¼^{-}$ , $R_{p K}^{- 1}$ , is measured for the first time using proton-p…

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

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

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

astro-ph.GA2020

JINGLE -- IV. Dust, HI gas and metal scaling laws in the local Universe

I. De Looze, I. Lamperti, A. Saintonge +29

Scaling laws of dust, HI gas and metal mass with stellar mass, specific star formation rate and metallicity are crucial to our understanding of the buildup of galaxies through thei…

Search for $A^{'} \to I^¼^{+} I^¼^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +905

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

Search for the lepton flavour violating decay $B^{+} \to K^{+} I^¼^{-} I ¨ ^{+}$ using $B_{s 2}^{* 0}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +904

A search is presented for the lepton flavour violating decay $B^{+} \to K^{+} I^¼^{-} I ¨ ^{+}$ using a sample of proton--proton collisions at centre-of-mass energies of 7, 8, and 13…

Evidence for the decay $B_{s}^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +788

A search for the decay $B_{s}^{0} \to K^{* 0} I^¼^{+} I^¼^{-}$ is presented using data sets corresponding to 1.0, 2.0 and 1.6 $fb^{- 1}$ of integrated luminosity co…

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

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

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

Model-independent measurement of the CKM angle $I^^{3}$ using $B^{0} \to D K^{* 0}$ decays with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ and $K_{S}^{0} K^{+} K^{-}$

R. Aaij, C. AbellÃ¡n Beteta, B. Adeva +727

A binned Dalitz plot analysis of the decays $B^{0} \to D K^{* 0}$ , with $D \to K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ and $K_{S}^{0} K^{+} K^{-}$ , is performed to measure the observables $x_\pm…

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

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

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

Observation of the $I^_{b}^{0} \to I^ I ¨ $ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +730

The $I^_{b}^{0} \to I^ 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…

Observation of a new baryon state in the $I^_{b}^{0} I ¨ ^{+} I ¨ ^{-}$ mass spectrum

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +905

A new baryon state is observed in the $I^_{b}^{0} I ¨ ^{+} I ¨ ^{-}$ mass spectrum with high significance using a data sample of $pp$ collisions, collected with the LHCb detector at centre-of-ma…

Model-independent measurement of mixing parameters in $D^{0} \to K_{S} I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +724

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

Observation of several sources of $C P$ violation in $B^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +868

Observations are reported of different sources of $C P$ violation from an amplitude analysis of $B^{+} \to I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ decays, based on a data sample corresponding to an integrate…

Measurement of forward top pair production in the dilepton channel in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, B. Adeva +791

Forward top quark pair production is studied in $pp$ collisions in the $I^¼ e b$ final state using a data sample corresponding to an integrated luminosity of 1.93 fb $^{- 1}$ collected…

Observation of the decay $B_{s}^{0} \to I ¨ _{c 2} K^{+} K^{-}$ in the $I ¨ $ mass region

LHCb collaboration, R. Aaij, B. Adeva +828

The $B_{s}^{0} \to I ¨ _{c 2} K^{+} K^{-}$ decay mode is observed and its branching fraction relative to the corresponding $I ¨ _{c 1}$ decay mode, in a $\pm 15 \textrm{MeV}/…

Observation of the decays $I^_{b}^{0} \to I ¨ _{c 1} p K^{-}$ and $I^_{b}^{0} \to I ¨ _{c 2} p K^{-}$

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

The first observation of the decays $I^_{b}^{0} \to I ¨ _{c 1} p K^{-}$ and $I^_{b}^{0} \to I ¨ _{c 2} p K^{-}$ is reported using a data sample corresponding to an integrated luminosity of $3.0$ fb$…

Measurement of forward $W \to e I^½$ production in $pp$ collisions at $s = 8$ TeV

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

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

Measurement of the $I^c ◯_{c}^{0}$ baryon lifetime

LHCb collaboration, R. Aaij, B. Adeva +834

We report a measurement of the lifetime of the $I^c ◯_{c}^{0}$ baryon using proton-proton collision data at center-of-mass energies of 7 and 8~TeV, corresponding to an integrated luminosi…

Search for the rare decay $I^_{c}^{+} \to p I^¼^{+} I^¼^{-}$

LHCb collaboration, R. Aaij, B. Adeva +792

A search for the flavor-changing neutral-current decay $I^_{c}^{+} \to p I^¼^{+} I^¼^{-}$ is reported using a data set corresponding to an integrated luminosity of $3.0 f b^{- 1}$ collect…

Measurement of the $I^¥$ polarizations in $pp$ collisions at $s$ =7 and 8TeV

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

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

Measurement of the $B^{\pm}$ production cross-section in pp collisions at $s =$ 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 $B^{\pm} \to J / I ¨ K^{\pm}$ decays and data samples correspo…

Angular analysis and differential branching fraction of the decay $B_{s}^{0} \to I ¨ I^¼^{+} I^¼^{-}$

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

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

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 $J / I ¨ p$ resonances consistent with pentaquark states in $I^_{b}^{0} \to J / I ¨ K^{-} p$ decays

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

Observations of exotic structures in the $J / I ¨ p$ channel, that we refer to as pentaquark-charmonium states, in $I^_{b}^{0} \to J / I ¨ K^{-} p$ decays are presented. The data sample correspon…

Observation of the $I^_{b}^{0} \to I ¨ _{c 1} (3872) p K^{-}$ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +903

Using proton-proton collision data, collected with the LHCb detector and corresponding to 1.0, 2.0 and 1.9fb $^{- 1}$ of integrated luminosity at the centre-of-mass energies of 7, 8,…

Measurements of prompt charm production cross-sections in $pp$ collisions at $s = 13 TeV$

LHCb collaboration, R. Aaij, C. AbellÃ¡n 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 $13 TeV$ . The data sample…

Search for $B_{c}^{+}$ decays to two charm mesons

LHCb collaboration, R. Aaij, B. Adeva +791

A search for decays of $B_{c}^{+}$ mesons to two charm mesons is performed for the first time using data corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ , collected by the LH…

astro-ph.HE2013

Search for long-lived gravitational-wave transients coincident with long gamma-ray bursts

The LIGO Scientific Collaboration, the Virgo Collaboration, J. Aasi +875

Long gamma-ray bursts (GRBs) have been linked to extreme core-collapse supernovae from massive stars. Gravitational waves (GW) offer a probe of the physics behind long GRBs. We inv…

Observation of a narrow pentaquark state, $P_{c} (4312)^{+}$ , and of two-peak structure of the $P_{c} (4450)^{+}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +866

A narrow pentaquark state, $P_{c} (4312)^{+}$ , decaying to $J / I ¨ p$ is discovered with a statistical significance of $7.3 I ¨ $ in a data sample of $I^_{b}^{0} \to J / I ¨ p K^{-}$ decays which is a…

Measurement of the time-integrated $C P$ asymmetry in $D^{0} \to K_{S}^{0} K_{S}^{0}$ decays

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

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

Measurement of the mass difference between neutral charm-meson eigenstates

LHCb Collaboration, R. Aaij, C. AbellÃ¡n Beteta +842

We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. We use $2.3 \times 1 0^{6}$ $…

Amplitude analysis of the $B_{(s)} \to K^{* 0} K^{* 0}$ decays and measurement of the branching fraction of the $B \to K^{* 0} K^{* 0}$ decay

LHCb Collaboration, R. Aaij, C. AbellÃ¡n Beteta +844

The $B^{0} \to K^{* 0} K^{* 0}$ and $B_{s}^{0} \to K^{* 0} K^{* 0}$ decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3…

Forward production of $I^¥$ mesons in $pp$ collisions at $s = 7$ and 8TeV

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

The production of $I^¥$ mesons in $pp$ collisions at $= 7$ and $8 TeV$ is studied with the LHCb detector using data samples corresponding to an integrated luminosity o…

Measurement of the $J / I ¨ $ pair production cross-section in $pp$ collisions at $s = 13 TeV$

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

The production cross-section of $J / I ¨ $ 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 $Z/Î³^{\ast} \rightarrow Î¼^{+}Î¼^{-}$ decays and determination of the effective weak mixing angle

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

The forward-backward charge asymmetry for the process $q\bar{q} \rightarrow Z/Î³^{\ast} \rightarrow Î¼^{+}Î¼^{-}$ is measured as a function of the invariant mass of the dimuon syst…

First measurement of charm production in fixed-target configuration at the LHC

LHCb collaboration, R. Aaij, B. Adeva +834

The first measurement of heavy-flavour production by the LHCb experiment in its fixed-target mode is presented. The production of $J / I ¨ $ and $D^{0}$ mesons is studied with beams of p…

First observation of the decay $D^{0} \to K^{-} I ¨ ^{+} I^¼^{+} I^¼^{-}$ in the $I ¨ ^{0}$ - $I ¨ $ region of the dimuon mass spectrum

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +730

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

astro-ph.GA2024

MHONGOOSE -- A MeerKAT Nearby Galaxy HI Survey

W. J. G. de Blok, J. Healy, F. M. Maccagni +57

The MHONGOOSE (MeerKAT HI Observations of Nearby Galactic Objects: Observing Southern Emitters) survey maps the distribution and kinematics of the neutral atomic hydrogen (HI) gas…

Physics case for an LHCb Upgrade II - Opportunities in flavour physics, and beyond, in the HL-LHC era

LHCb collaboration, I. Bediaga, M. Cruz Torres +828

The LHCb Upgrade II will fully exploit the flavour-physics opportunities of the HL-LHC, and study additional physics topics that take advantage of the forward acceptance of the LHC…

Measurement of CP violation in the $B_{s}^{0} \to I ¨ I ¨ $ decay and search for the $B^{0} \to I ¨ I ¨ $ decay

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +868

A measurement of the time-dependent CP-violating asymmetry in $B_{s}^{0} \to I ¨ I ¨ $ decays is presented. Using a sample of proton-proton collision data corresponding to an integra…

Measurement of the inelastic $pp$ cross-section at a centre-of-mass energy of 13\,TeV

LHCb collaboration, R. Aaij, B. Adeva +782

The cross-section for inelastic proton-proton collisions at a centre-of-mass energy of 13\,TeV is measured with the LHCb detector. The fiducial cross-section for inelastic interact…

Search for the $B_{s}^{0} \to I^\cdot^{'} I ¨ $ decay

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

A search for the charmless $B_{s}^{0} \to I^\cdot^{'} 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 $I^_{b}^{0} \to J / I ¨ p I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +739

A full amplitude analysis of $I^_{b}^{0} \to J / I ¨ p I ¨ ^{-}$ decays is performed with a data sample acquired with the LHCb detector from 7 and 8 TeV $pp$ collisions, corresponding to an in…

gr-qc2014

Implementation of an F-statistic all-sky search for continuous gravitational waves in Virgo VSR1 data

J. Aasi, B. P. Abbott, R. Abbott +848

We present an implementation of the $F$ -statistic to carry out the first search in data from the Virgo laser interferometric gravitational wave detector for periodic grav…

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

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

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

First observation of the decay $B_{s}^{0} \to K_{S}^{0} K^{*} (892)^{0}$

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

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

Measurements of $C P$ asymmetries in charmless four-body $I^_{b}$ and $I^_{b}^{0}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +841

A search for $C P$ violation in charmless four-body decays of $I^_{b}$ and $I^_{b}^{0}$ baryons with a proton and three charged mesons in the final state is performed. To cancel out produ…

Study of the production of $I^_{b}^{0}$ and $B^{0}$ hadrons in $pp$ collisions and first measurement of the $I^_{b}^{0} \to J / I ¨ p K^{-}$ branching fraction

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

The product of the $I^_{b}^{0}$ ( $B^{0}$ ) differential production cross-section and the branching fraction of the decay $I^_{b}^{0} \to J / I ¨ p K^{-}$ ($\overline{B}^0\rightarro…

Measurement of $Z \to I ¨ ^{+} I ¨ ^{-}$ production in proton-proton collisions at $s = 8$ TeV

LHCb collaboration, R. Aaij, B. Adeva +821

A measurement of $Z \to I ¨ ^{+} I ¨ ^{-}$ production cross-section is presented using data, corresponding to an integrated luminosity of 2 fb $^{- 1}$ , from $pp$ collisions at $\sqrt{s…

Observation of an excited $B_{c}^{+}$ state

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +848

Using $pp$ collision data corresponding to an integrated luminosity of $8.5 fb^{- 1}$ recorded by the LHCb experiment at centre-of-mass energies of $s = 7$ , $8$ and…

Study of $b b ˉ$ 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 the doubly charmed baryon $I^_{cc}^{+}$

LHCb collaboration, R. Aaij, C. AbelÃ¡n Beteta +905

A search for the doubly charmed baryon $I^_{cc}^{+}$ is performed through its decay to the $I^_{c}^{+} K^{-} I ¨ ^{+}$ final state, using proton-proton collision data collected with the LHCb…

Measurement of the branching fraction and $C P$ asymmetry in $B^{+} \to J / I ¨ I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +844

The branching fraction and direct $C P$ asymmetry of the decay $B^{+} \to J / I ¨ I ¨ ^{+}$ are measured using proton-proton collision data collected with the LHCb detector at ce…

Search for structure in the $B_{s}^{0} I ¨ ^{\pm}$ invariant mass spectrum

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

The $B_{s}^{0} I ¨ ^{\pm}$ 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…

Amplitude analysis of $B_{s}^{0} \to K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ decays

LHCb Collaboration, R. Aaij, C. AbellÃ¡n Beteta +843

The first untagged decay-time-integrated amplitude analysis of $B_{s}^{0} \to K_{S}^{0} K^{\pm} I ¨ ^{\mp}$ decays is performed using a sample corresponding to $3.0\,…

Search for decays of neutral beauty mesons into four muons

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

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

Measurement of antiproton production in $pHe$ collisions at $s_{N N} = 110$ GeV

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +839

The cross-section for prompt antiproton production in collisions of protons with an energy of $6.5$ TeV incident on helium nuclei at rest is measured with the LHCb experiment from…

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

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

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

Measurement of the ratio of branching fractions $B (B_{c}^{+} \to J / I ¨ K^{+}) / B (B_{c}^{+} \to J / I ¨ I ¨ ^{+})$

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

The ratio of branching fractions $R_{K / I ¨ } \equiv B (B_{c}^{+} \to J / I ¨ K^{+}) / B (B_{c}^{+} \to J / I ¨ I ¨ ^{+})$ is measured with $pp$ collision data collected by the…

Measurement of $f_{s} / f_{u}$ variation with proton-proton collision energy and $B$ -meson kinematics

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +903

The ratio of the $B_{s}^{0}$ and $B^{+}$ fragmentation fractions $f_{s}$ and $f_{u}$ is studied with $B_{s}^{0} \to J / I ¨ I ¨ $ and $B^+\to\mathrm…

Observation of $B_{c}^{+} \to J / I ¨ D^{()} K^{()}$ decays

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

A search for the decays $B_{c}^{+} \to J / I ¨ D^{(*) 0} K^{+}$ and $B_{c}^{+} \to J / I ¨ D^{(*) +} K^{* 0}$ is performed with data collected at the LHCb experiment corresponding to an integrated lumi…

Measurement of $C P$ observables in the process $B^{0} \to D K^{* 0}$ with two- and four-body $D$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +876

Measurements of $C P$ observables in $B^{0} \to D K^{* 0}$ decays are presented, where $D$ represents a superposition of $D^{0}$ and $D ˉ^{0}$ states. The $D$ meson is reconstructed i…

gr-qc2014

First all-sky search for continuous gravitational waves from unknown sources in binary systems

The LIGO Scientific Collaboration, the Virgo Collaboration, J. Aasi +849

We present the first results of an all-sky search for continuous gravitational waves from unknown spinning neutron stars in binary systems using LIGO and Virgo data. Using a specia…

Near-threshold $D D ˉ$ spectroscopy and observation of a new charmonium state

LHCb Collaboration, R. Aaij, C. AbellÃ¡n Beteta +846

Using proton-proton collision data, corresponding to an integrated luminosity of 9 $f b^{- 1}$ , collected with the~LHCb detector between 2011 and 2018, a new narrow charmonium state,…

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

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

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

Measurement of the $I^_{b}^{0} \to J / I ¨ I^$ angular distribution and the $I^_{b}^{0}$ polarisation in $pp$ collisions

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +912

This paper presents an analysis of the $I^_{b}^{0} \to J / I ¨ I^$ angular distribution and the transverse production polarisation of $I^_{b}^{0}$ baryons in proton-proton collisions at…

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…

Observation of $B_{(s)}^{0} \to J / I ¨ p p$ decays and precision measurements of the $B_{(s)}^{0}$ masses

LHCb Collaboration, R. Aaij, C. AbellÃ¡n Beteta +843

The first observation of the decays $B_{(s)}^{0} \to J / I ¨ p p$ is reported, using proton-proton collision data corresponding to an integrated luminosity of $5.2{\text{\,fb}…

nucl-ex2016

Study of $I ¨ (2 S)$ production and cold nuclear matter effects in pPb collisions at $s_{N N} = 5 TeV$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +732

The production of $I ¨ (2 S)$ 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…

Observation of the suppressed decay $I^_{b}^{0} \to p I ¨ ^{-} I^¼^{+} I^¼^{-}$

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

The suppressed decay $I^_{b}^{0} \to p I ¨ ^{-} I^¼^{+} I^¼^{-}$ , excluding the $J / I ¨ $ and $I ¨ (2 S) \to I^¼^{+} I^¼^{-}$ resonances, is observed for the first time with a signif…

Precision measurement of the $B_{c}^{+}$ meson mass

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +905

A precision measurement of the $B_{c}^{+}$ meson mass is performed using proton-proton collision data collected with the LHCb experiment at centre-of-mass energies of $7, 8$ and $1…

Search for $C P$ violation in $D_{s}^{+} \to K_{S}^{0} I ¨ ^{+}$ , $D^{+} \to K_{S}^{0} K^{+}$ and $D^{+} \to I ¨ I ¨ ^{+}$ decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +848

A search for charge-parity ( $C P$ ) violation in Cabibbo-suppressed $D_{s}^{+} \to K_{S}^{0} I ¨ ^{+}$ , $D^{+} \to K_{S}^{0} K^{+}$ and $D^{+} \to I ¨ I ¨ ^{+}$ decays is reported using proton-proton collision dat…

Measurement of the $C P$ violation parameter $A_{I^} $ in $D^{0} \to K^{+} K^{-}$ and $D^{0} \to I ¨ ^{+} I ¨ ^{-}$ decays

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

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

astro-ph.SR2013

Abell 48 - a rare WN-type central star of a planetary nebula

H. Todt, A. Y. Kniazev, V. V. Gvaramadze +18

A considerable fraction of the central stars of planetary nebulae (CSPNe) are hydrogen-deficient. Almost all of these H-deficient central stars (CSs) display spectra with strong ca…

Amplitude analysis of $B^{0} \to D ˉ^{0} K^{+} I ¨ ^{-}$ decays

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

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

physics.ins-det2015

Run 2 Upgrades to the CMS Level-1 Calorimeter Trigger

B. Kreis, J. Berryhill, R. Cavanaugh +61

The CMS Level-1 calorimeter trigger is being upgraded in two stages to maintain performance as the LHC increases pile-up and instantaneous luminosity in its second run. In the firs…

Measurement of the $I^\cdot_{c} (1 S)$ production cross-section in $pp$ collisions at $s = 13$ TeV

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +913

Using a data sample corresponding to an integrated luminosity of $2.0 f b^{- 1}$ , collected by the LHCb experiment, the production of the $I^\cdot_{c} (1 S)$ state in proton-proton collision…

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 $pp \to b b ˉ X$ are reported in 7 and 13 TeV collisions at the LHC as a function of the pseudorapi…

First observation of forward $Z \to b b ˉ$ production in $pp$ collisions at $s = 8$ TeV

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

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

Search for the rare decays $B^{0} \to J / I ¨ I^^{3}$ and $B_{s}^{0} \to J / I ¨ I^^{3}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +725

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

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

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

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

Search for beautiful tetraquarks in the $I^¥ (1 S) I^¼ I^¼$ invariant-mass spectrum

LHCb collaboration, R. Aaij, B. Adeva +836

The $I^¥ (1 S) I^¼^{+} I^¼^{-}$ invariant-mass distribution is investigated for a possible exotic meson state composed of two $b$ quarks and two $b$ quarks, $X_{b\overline{b}b\over…

nucl-ex2016

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

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +732

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

Study of $J / I ¨ $ production in jets

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

The production of $J / I ¨ $ 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 new $I^_{c}^{0}$ baryons decaying to $I^_{c}^{+} K^{-}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +906

The $I^_{c}^{+} K^{-}$ mass spectrum is studied with a data sample of $pp$ collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb $^{- 1}$ colle…

Observation of the decay $B_{s}^{0} \to I^\cdot_{c} I ¨ $ and evidence for $B_{s}^{0} \to I^\cdot_{c} I ¨ ^{+} I ¨ ^{-}$

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

A study of $B_{s}^{0} \to I^\cdot_{c} I ¨ $ and $B_{s}^{0} \to I^\cdot_{c} I ¨ ^{+} I ¨ ^{-}$ decays is performed using $pp$ collision data corresponding to an integrated luminosity of 3.0$\,\rm fb…

Search for $C P$ violation in $I^_{b}^{0} \to p K^{-}$ and $I^_{b}^{0} \to p I ¨ ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +834

A search for $C P$ violation in $I^_{b}^{0} \to p K^{-}$ and $I^_{b}^{0} \to p I ¨ ^{-}$ decays is presented using a sample of $pp$ collisions collected with the LHCb detector and corresponding…

Observation of five new narrow $I^c ◯_{c}^{0}$ states decaying to $I^_{c}^{+} K^{-}$

LHCb collaboration, R. Aaij, B. Adeva +772

The $I^_{c}^{+} K^{-}$ mass spectrum is studied with a sample of $pp$ collision data corresponding to an integrated luminosity of 3.3 fb $^{- 1}$ , collected by the LHCb experiment. The $Î…

Observation of $I^\cdot_{c} (2 S) \to p p ˉ$ and search for $X (3872) \to p p ˉ$ decays

LHCb collaboration, R. Aaij, B. Adeva +750

The first observation of the decay $I^\cdot_{c} (2 S) \to p p ˉ$ is reported using proton-proton collision data corresponding to an integrated luminosity of $3.0 f b^{- 1}$ recorde…

A new algorithm for identifying the flavour of $B_{s}^{0}$ mesons at LHCb

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +732

A new algorithm for the determination of the initial flavour of $B_{s}^{0}$ mesons is presented. The algorithm is based on two neural networks and exploits the $b$ hadron production me…

Measurement of the ratio of branching fractions and difference in $C P$ asymmetries of the decays $B^{+} \to J / I ¨ I ¨ ^{+}$ and $B^{+} \to J / I ¨ K^{+}$

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

The ratio of branching fractions and the difference in $C P$ asymmetries of the decays $B^{+} \to J / I ¨ I ¨ ^{+}$ and $B^{+} \to J / I ¨ K^{+}$ are measured using a data sample of $pp$ collisions col…

Observation of the decay $I^_{b}^{0} \to I^_{c}^{+} p p I ¨ ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +787

The decay $I^_{b}^{0} \to I^_{c}^{+} p p I ¨ ^{-}$ is observed using $pp$ collision data collected with the LHCb detector at centre-of-mass energies of $s =$ 7 and 8 TeV, corr…

Observation of $J / I ¨ I ¨ $ structures consistent with exotic states from amplitude analysis of $B^{+} \to J / I ¨ I ¨ K^{+}$ decays

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

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

cs.DC2025

A Case Study on Virtual and Physical I/O Throughputs

T. Mirzoev, B. Yang, M. Davis +1

Input/Output (I/O) performance is one of the key areas that need to be carefully examined to better support IT services. With the rapid development and deployment of virtualization…

Observation of $C P$ violation in charm decays

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +848

A search for charge-parity ( $C P$ ) violation in $D^{0} \to K^{-} K^{+}$ and $D^{0} \to I ¨ ^{-} I ¨ ^{+}$ decays is reported, using $pp$ collision data corresponding to an integrated luminosity o…

Observation of the decay $I^_{b}^{0} \to I ¨ (2 S) p I ¨ ^{-}$

LHCb collaboration, R. Aaij, B. Adeva +834

The Cabibbo-suppressed decay $I^_{b}^{0} \to I ¨ (2 S) p I ¨ ^{-}$ is observed for the first time using a data sample collected by the LHCb experiment in proton-proton collisions correspo…

Evidence for the strangeness-changing weak decay $I^_{b}^{-} \to I^_{b}^{0} I ¨ ^{-}$

LHCb collaboration, R. Aaij, C. AbellÃ¡n Beteta +724

Using a $pp$ collision data sample corresponding to an integrated luminosity of 3.0~fb $^{- 1}$ , collected by the LHCb detector, we present the first search for the strangeness-chang…

Measurement of the $C P$ asymmetry in $B^{-} \to D_{s}^{-} D^{0}$ and $B^{-} \to D^{-} D^{0}$ decays

LHCb collaboration, R. Aaij, B. Adeva +787

The $C P$ asymmetry in $B^{-} \to D_{s}^{-} D^{0}$ and $B^{-} \to D^{-} D^{0}$ decays is measured using LHCb data corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ , collected in $pp$ collisi…