A. Torreira

activity

20112026

most citedFirst evidence for the decay Bs -> mu+ mu-

391 citations · 5.4k across the 72 of their papers we have counts for

collaborators

Showing hep-exShow all

71 papers · 1 filter

hep-ex2023

Search for $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ in $B^{-} \to π^{-} μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +1047

The very rare $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ decay is searched for by analysing $B^{-} \to π^{-} μ^{+} μ^{-}$ decays. The analysis uses a sample of beauty mesons produced in proton-proton collisions…

hep-ex2022★ 9 cited

Search for the doubly heavy baryon $Ξ_{bc}^{+}$ decaying to $J / ψ Ξ_{c}^{+}$

LHCb collaboration, R. Aaij, A. S. W. Abdelmotteleb +999

A first search for the $Ξ_{bc}^{+} \to J/ ψ Ξ_{c}^{+}$ decay is performed by the LHCb experiment with a data sample of proton-proton collisions, corresponding to an integrate…

hep-ex2021★ 154 cited

Branching fraction measurements of the rare $B_{s}^{0} \to ϕ μ^{+} μ^{-}$ and $B_{s}^{0} \to f_{2}^{'} (1525) μ^{+} μ^{-}$ decays

LHCb collaboration, R. Aaij, C. Abellán Beteta +959

The branching fraction of the rare $B_{s}^{0} \to ϕ μ^{+} μ^{-}$ decay is measured using data collected by the LHCb experiment at center-of-mass energies of $7$ , $8$ and $13 TeV$ …

hep-ex2018★ 9 cited

Measurement of the branching fractions of the decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$

LHCb collaboration, R. Aaij, C. Abellán Beteta +841

The branching fractions of the doubly Cabibbo-suppressed decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$ are measured using the decays…

hep-ex2017★ 40 cited

Measurement of $B^{0}$ , $B_{s}^{0}$ , $B^{+}$ and $Λ_{b}^{0}$ production asymmetries in 7 and 8 TeV proton-proton collisions

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

The $B^{0}$ , $B_{s}^{0}$ , $B^{+}$ and $Λ_{b}^{0}$ hadron production asymmetries are measured using a data sample corresponding to an integrated luminosity of 3.0 fb $^{- 1}$ , collected by the LH…

hep-ex2017★ 25 cited

Observation of the $Ξ_{b}^{-} \to J / ψ Λ K^{-}$ decay

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

The observation of the decay $Ξ_{b}^{-} \to J / ψ Λ K^{-}$ is reported, using a data sample corresponding to an integrated luminosity of $3 fb^{- 1}$ , collected b…

hep-ex2016★ 224 cited

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

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

The first full amplitude analysis of $B^{+} \to J / ψ ϕ K^{+}$ with $J / ψ \to μ^{+} μ^{-}$ , $ϕ \to K^{+} K^{-}$ decays is performed with a data sample of 3 fb $^{- 1}$ of $pp$ collision data collected at $…

hep-ex2016★ 23 cited

Observation of the $Λ_{b}^{0} \to Λ ϕ$ decay

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

The $Λ_{b}^{0} \to Λ ϕ$ 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 a $…

hep-ex2015★ 33 cited

Studies of the resonance structure in $D^{0} \to K_{S}^{0} K^{\pm} π^{\mp}$ decays

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

Amplitude models are applied to studies of resonance structure in $D^{0} \to K_{S}^{0} K^{-} π^{+}$ and $D^{0} \to K_{S}^{0} K^{+} π^{-}$ decays using $pp$ collision data corresponding to an integrated…

hep-ex2015★ 115 cited

Quantum numbers of the $X (3872)$ state and orbital angular momentum in its $ρ^{0} J ψ$ decay

LHCb collaboration, R. Aaij, C. Abellan Beteta +619

Angular correlations in $B^{+} \to X (3872) K^{+}$ decays, with $X (3872) \to ρ^{0} J / ψ$ , $ρ^{0} \to π^{+} π^{-}$ and $J / ψ \to μ^{+} μ^{-}$ , are used to measure orbital angular momentum contributions and to…

hep-ex2014★ 30 cited

Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons

LHCb collaboration, R. Aaij, C. Abellán Beteta +702

Using the latest LHCb measurements of time-dependent CP violation in the B^0_s -> K^+K^- decay, a U-spin relation between the decay amplitudes of B^0_s -> K^+K^- and B^0 -> π^+π^-…

hep-ex2014★ 27 cited

Search for $C P$ violation using $T$ -odd correlations in $D^{0} \to K^{+} K^{-} π^{+} π^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +702

A search for $C P$ violation using $T$ -odd correlations is performed using the four-body $D^{0} \to K^{+} K^{-} π^{+} π^{-}$ decay, selected from semileptonic $B$ decays. The data sample corresp…

hep-ex2014★ 71 cited

Measurement of $ψ (2 S)$ polarisation in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +693

The polarisation of prompt $ψ (2 S)$ mesons is measured by performing an angular analysis of $ψ (2 S) \to μ^{+} μ^{-}$ decays using proton-proton collision data, corresponding t…

hep-ex2014★ 138 cited

Search for Majorana neutrinos in $B^{-} \to π^{+} μ^{-} μ^{-}$ decays

LHCb collaboration, R. Aaij, B. Adeva +674

A search for heavy Majorana neutrinos produced in the $B^{-} \to π^{+} μ^{-} μ^{-}$ decay mode is performed using 3 fb $^{- 1}$ of integrated luminosity collected with the LHCb detector in $pp…

hep-ex2014★ 42 cited

Searches for $Λ_{b}^{0}$ and $Ξ_{b}^{0}$ decays to $K_{S}^{0} p π^{-}$ and $K_{S}^{0} p K^{-}$ final states with first observation of the $Λ_{b}^{0} \to K_{S}^{0} p π^{-}$ decay

LHCb collaboration, R. Aaij, B. Adeva +671

A search for previously unobserved decays of beauty baryons to the final states $K_{S}^{0} p π^{-}$ and $K_{S}^{0} p K^{-}$ is reported. The…

hep-ex2014★ 159 cited

Updated measurements of exclusive $J / ψ$ and $ψ (2 S)$ production cross-sections in $pp$ collisions at $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +670

The differential cross-section as a function of rapidity has been measured for the exclusive production of $J / ψ$ and $ψ (2 S)$ mesons in proton-proton collisions at $s = 7$ TeV,…

hep-ex2014★ 32 cited

Observation of associated production of a $Z$ boson with a $D$ meson in the~forward region

LHCb collaboration, R. Aaij, B. Adeva +673

A search for associated production of a $Z$ boson with an open charm meson is presented using a data sample, corresponding to an integrated luminosity of $1.0 fb^{- ‘}$ of…

hep-ex2013★ 52 cited

Studies of beauty baryon decays to $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states

LHCb collaboration, R. Aaij, B. Adeva +670

Decays of beauty baryons to the $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states (where $h$ indicates a pion or a kaon) are studied using a data sample of $pp$ collisions, corresponding to…

hep-ex2013★ 116 cited

Measurement of CP violation in the phase space of $B^{\pm} \to K^{+} K^{-} π^{\pm}$ and $B^{\pm} \to π^{+} π^{-} π^{\pm}$ decays

LHCb collaboration, R. Aaij, B. Adeva +656

The charmless decays $B^{\pm} \to K^{+} K^{-} π^{\pm}$ and $B^{\pm} \to π^{+} π^{-} π^{\pm}$ are reconstructed in a data set, corresponding to an integrated luminosity…

hep-ex2013

Search for the decay D0 to π+ π- μ+ μ-

LHCb collaboration, R. Aaij, B. Adeva +656

A search for the D0 to π+ π- μ+ μ- decay, where the muon pair does not originate from a resonance, is performed using proton-proton collision data corresponding to an integrated lu…

hep-ex2013★ 36 cited

Observation of the decay $B_{c} \to J / ψ K^{+} K^{-} π^{+}$

LHCb collaboration, R. Aaij, B. Adeva +656

The decay $B_{c} \to J / ψ K^{+} K^{-} π^{+}$ is observed for the first time, using proton-proton collisions collected with the LHCb detector corresponding to an integrated luminosity…

hep-ex2013★ 72 cited

Measurement of D0-D0bar mixing parameters and search for CP violation using D0->K+pi- decays

LHCb collaboration, R. Aaij, B. Adeva +657

Measurements of charm mixing parameters from the decay-time-dependent ratio of D0->K+pi- to D0->K-pi+ rates and the charge-conjugate ratio are reported. The analysis uses data, cor…

hep-ex2013★ 12 cited

Measurement of the charge asymmetry in $B^{\pm} \to ϕ K^{\pm}$ and search for $B^{\pm} \to ϕ π^{\pm}$ decays

LHCb collaboration, R. Aaij, B. Adeva +655

The \CP-violating charge asymmetry in $B^{\pm} \to ϕ K^{\pm}$ decays is measured in a sample of $pp$ collisions at 7 TeV centre-of-mass energy, corresponding to an integrated…

hep-ex2013★ 32 cited

First observation of B0->J/ψK+K- and search for B0->J/ψϕ decays

LHCb collaboration, R. Aaij, B. Adeva +652

The first observation of the B0->J/ψK+K- decay is presented with a data sample corresponding to an integrated luminosity of 1.0/fb of pp collisions at a center-of-mass energy of 7…

Search for D∗(2007)0→μ+μ− in B−→π−μ+μ− decays

Search for the doubly heavy baryon Ξbc+​ decaying to J/ψΞc+​

Branching fraction measurements of the rare Bs0​→ϕμ+μ− and Bs0​→f2′​(1525)μ+μ− decays

Measurement of the branching fractions of the decays D+→K−K+K+, D+→π−π+K+ and Ds+​→π−K+K+

Measurement of B0, Bs0​, B+ and Λb0​ production asymmetries in 7 and 8 TeV proton-proton collisions

Observation of the Ξb−​→J/ψΛK− decay

Observation of J/ψϕ structures consistent with exotic states from amplitude analysis of B+→J/ψϕK+ decays

Observation of the Λb0​→Λϕ decay

Studies of the resonance structure in D0→KS0​K±π∓ decays

Quantum numbers of the X(3872) state and orbital angular momentum in its ρ0Jψ decay

Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons

Search for CP violation using T-odd correlations in D0→K+K−π+π− decays

Measurement of ψ(2S) polarisation in pp collisions at s​=7 TeV

Search for Majorana neutrinos in B−→π+μ−μ− decays

Searches for Λb0​ and Ξb0​ decays to KS0​pπ− and KS0​pK− final states with first observation of the Λb0​→KS0​pπ− decay

Updated measurements of exclusive J/ψ and ψ(2S) production cross-sections in pp collisions at s​=7 TeV

Observation of associated production of a Z boson with a D meson in the~forward region

Studies of beauty baryon decays to D0ph− and Λc+​h− final states

Measurement of CP violation in the phase space of B±→K+K−π± and B±→π+π−π± decays

Search for the decay D0 to π+ π- μ+ μ-

Observation of the decay Bc​→J/ψK+K−π+

Measurement of D0-D0bar mixing parameters and search for CP violation using D0->K+pi- decays

Measurement of the charge asymmetry in B±→ϕK± and search for B±→ϕπ± decays

First observation of B0->J/ψK+K- and search for B0->J/ψϕ decays

Search for $D^{*} (2007)^{0} \to μ^{+} μ^{-}$ in $B^{-} \to π^{-} μ^{+} μ^{-}$ decays

Search for the doubly heavy baryon $Ξ_{bc}^{+}$ decaying to $J / ψ Ξ_{c}^{+}$

Branching fraction measurements of the rare $B_{s}^{0} \to ϕ μ^{+} μ^{-}$ and $B_{s}^{0} \to f_{2}^{'} (1525) μ^{+} μ^{-}$ decays

Measurement of the branching fractions of the decays $D^{+} \to K^{-} K^{+} K^{+}$ , $D^{+} \to π^{-} π^{+} K^{+}$ and $D_{s}^{+} \to π^{-} K^{+} K^{+}$

Measurement of $B^{0}$ , $B_{s}^{0}$ , $B^{+}$ and $Λ_{b}^{0}$ production asymmetries in 7 and 8 TeV proton-proton collisions

Observation of the $Ξ_{b}^{-} \to J / ψ Λ K^{-}$ decay

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

Observation of the $Λ_{b}^{0} \to Λ ϕ$ decay

Studies of the resonance structure in $D^{0} \to K_{S}^{0} K^{\pm} π^{\mp}$ decays

Quantum numbers of the $X (3872)$ state and orbital angular momentum in its $ρ^{0} J ψ$ decay

Search for $C P$ violation using $T$ -odd correlations in $D^{0} \to K^{+} K^{-} π^{+} π^{-}$ decays

Measurement of $ψ (2 S)$ polarisation in $pp$ collisions at $s = 7$ TeV

Search for Majorana neutrinos in $B^{-} \to π^{+} μ^{-} μ^{-}$ decays

Searches for $Λ_{b}^{0}$ and $Ξ_{b}^{0}$ decays to $K_{S}^{0} p π^{-}$ and $K_{S}^{0} p K^{-}$ final states with first observation of the $Λ_{b}^{0} \to K_{S}^{0} p π^{-}$ decay

Updated measurements of exclusive $J / ψ$ and $ψ (2 S)$ production cross-sections in $pp$ collisions at $s = 7$ TeV

Observation of associated production of a $Z$ boson with a $D$ meson in the~forward region

Studies of beauty baryon decays to $D^{0} p h^{-}$ and $Λ_{c}^{+} h^{-}$ final states

Measurement of CP violation in the phase space of $B^{\pm} \to K^{+} K^{-} π^{\pm}$ and $B^{\pm} \to π^{+} π^{-} π^{\pm}$ decays

Observation of the decay $B_{c} \to J / ψ K^{+} K^{-} π^{+}$

Measurement of the charge asymmetry in $B^{\pm} \to ϕ K^{\pm}$ and search for $B^{\pm} \to ϕ π^{\pm}$ decays