B. Rachwal

activity

20122025

most citedObservation of the resonant character of the

Z (4430)^{-}

state

398 citations · 2k across the 35 of their papers we have counts for

collaborators

36 papers

nucl-ex2025

Studies of CPT symmetry in positronium decays with 192 plastic strip J-PET detector

N. Chug, S. D. Bass, E. Y. Beyene +40

A direct test of the CPT symmetry is performed for the electromagnetic decays of ortho-positronium using the J-PET tomograph. We present the precise measurement of the CPT-sensitiv…

physics.ins-det2022★ 2 cited

Spatial resolution and efficiency of prototype sensors for the LHCb VELO Upgrade

E. Buchanan, K. Akiba, M. van Beuzekom +15

A comprehensive study of the spatial resolution and detection efficiency of sensor prototypes developed for the LHCb VELO upgrade is presented. Data samples were collected at the C…

physics.ins-det2020★ 4 cited

Charge collection properties of prototype sensors for the LHCb VELO upgrade

R. Geertsema, K. Akiba, M. van Beuzekom +20

An extensive sensor testing campaign is presented, dedicated to measuring the charge collection properties of prototype candidates for the Vertex Locator (VELO) detector for the up…

physics.ins-det2020★ 4 cited

The Upgrade I of LHCb VELO -- towards an intelligent monitoring platform

P. Kopciewicz, T. Szumlak, M. Majewski +63

The Large Hadron Collider beauty (LHCb) detector is designed to detect decays of b- and c- hadrons for the study of CP violation and rare decays. At the end of the LHC Run 2, many…

hep-ex2019★ 64 cited

Search for the doubly charmed baryon $Ξ_{cc}^{+}$

LHCb collaboration, R. Aaij, C. Abelán Beteta +905

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

hep-ex2018

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…

physics.ins-det2018★ 38 cited

The HeRSCheL detector: high-rapidity shower counters for LHCb

K. Carvalho Akiba, F. Alessio, N. Bondar +19

The HeRSCheL detector consists of a set of scintillating counters, designed to increase the coverage of the LHCb experiment in the high-rapidity regions on either side of the main…

hep-ex2017★ 48 cited

Measurement of the shape of the $Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} ν$ differential decay rate

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

A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay $Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} ν$ is reported, using data corresponding to…

physics.ins-det2017★ 177 cited

Improved performance of the LHCb Outer Tracker in LHC Run 2

Ph. d'Argent, L. Dufour, L. Grillo +36

The LHCb Outer Tracker is a gaseous detector covering an area of $5 \times 6 m^{2}$ with 12 double layers of straw tubes. The performance of the detector is presented based on data of…

hep-ex2014★ 26 cited

Study of $χ_{b}$ meson production in pp collisions at $s = 7$ and 8TeV and observation of the decay $χ_{b} \to Υ (3 S) γ$

LHCb collaboration, R. Aaij, B. Adeva +698

A study of $χ_{b}$ meson production at LHCb is performed on proton-proton collision data, corresponding to 3.0fb $^{- 1}$ of integrated luminosity collected at centre-of-mass energie…

hep-ex2014★ 27 cited

Measurement of CP asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

LHCb collaboration, R. Aaij, B. Adeva +698

We report on measurements of the time-dependent CP violating observables in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays using a dataset corresponding to 1.0 fb $^{- 1}$ of pp collisi…

hep-ex2014★ 26 cited

Evidence for CP violation in $B^{+} \to p p ˉ K^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +698

Three-body $B^{+} \to p p K^{+}$ and $B^{+} \to p p π^{+}$ decays are studied using a data sample corresponding to an integrated luminosity of 3.0 $f b^{- 1}$ collected by…

hep-ex2014★ 19 cited

Measurement of CP violation in $B_{s}^{0} \to ϕϕ$ decays

LHCb collaboration, R. Aaij, B. Adeva +698

A measurement of the decay time dependent CP-violating asymmetry in $B_{s}^{0} \to ϕϕ$ decays is presented, along with measurements of the $T$ -odd triple-product asymmetries. In this d…

hep-ex2014★ 21 cited

Effective lifetime measurements in the $B_{s}^{0} \to K^{+} K^{-}$ , $B^{0} \to K^{+} π^{-}$ and $B_{s}^{0} \to π^{+} K^{-}$ decays

R. Aaij, B. Adeva, M. Adinolfi +689

Measurements of the effective lifetimes in the $B_{s}^{0} \to K^{+} K^{-}$ , $B^{0} \to K^{+} π^{-}$ and $B_{s}^{0} \to π^{+} K^{-}$ decays are presented using…

nucl-ex2014★ 62 cited

Study of $Υ$ production and cold nuclear matter effects in pPb collisions at $s_{N N} = 5 TeV$

LHCb collaboration, R. Aaij, B. Adeva +696

Production of $Υ$ mesons in proton-lead collisions at a nucleon-nucleon centre-of-mass energy $s_{N N} = 5 TeV$ is studied with the LHCb detector. The analysis is base…

hep-ex2014★ 398 cited

Observation of the resonant character of the $Z (4430)^{-}$ state

LHCb collaboration, R. Aaij, B. Adeva +697

Resonant structures in $B^{0} \to ψ^{'} π^{-} K^{+}$ decays are analyzed by performing a four-dimensional fit of the decay amplitude, using $pp$ collision data corresponding to $3f b^{- 1}$ …

hep-ex2014★ 18 cited

Evidence for the decay $B_{c}^{+} \to J / ψ 3 π^{+} 2 π^{-}$

LHCb collaboration, R. Aaij, B. Adeva +686

Evidence is presented for the decay $B_{c} + \to J / ψ 3 π^{+} 2 π^{-}$ using proton-proton collision data, corresponding to an integrated luminosity of 3fb $^{- 1}$ , collected with the LH…

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★ 59 cited

Observation of photon polarization in the $b \to s γ$ transition

LHCb collaboration, R. Aaij, B. Adeva +680

This Letter presents a study of the flavor-changing neutral current radiative $B^{\pm} \to K^{\pm} π^{\mp} π^{\pm} γ$ decays performed using data collected in proton-proton collisions…

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★ 50 cited

Measurement of the $B_{c}^{+}$ meson lifetime using $B_{c}^{+} \to J / ψ μ^{+} ν_{μ} X$ decays

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

The lifetime of the $B_{c}^{+}$ meson is measured using semileptonic decays having a $J / ψ$ meson and a muon in the final state. The data, corresponding to an integrated luminosity…

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…

Studies of CPT symmetry in positronium decays with 192 plastic strip J-PET detector

Spatial resolution and efficiency of prototype sensors for the LHCb VELO Upgrade

Charge collection properties of prototype sensors for the LHCb VELO upgrade

The Upgrade I of LHCb VELO -- towards an intelligent monitoring platform

Search for the doubly charmed baryon Ξcc+​

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

The HeRSCheL detector: high-rapidity shower counters for LHCb

Measurement of the shape of the Λb0​→Λc+​μ−ν differential decay rate

Improved performance of the LHCb Outer Tracker in LHC Run 2

Study of χb​ meson production in pp collisions at s​=7 and 8TeV and observation of the decay χb​→Υ(3S)γ

Measurement of CP asymmetry in Bs0​→Ds∓​K± decays

Evidence for CP violation in B+→ppˉ​K+ decays

Measurement of CP violation in Bs0​→ϕϕ decays

Effective lifetime measurements in the Bs0​→K+K−, B0→K+π− and Bs0​→π+K− decays

Study of Υ production and cold nuclear matter effects in pPb collisions at sNN​​=5 TeV

Observation of the resonant character of the Z(4430)− state

Evidence for the decay Bc+​→J/ψ3π+2π−

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

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

Observation of photon polarization in the b→sγ transition

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

Measurement of the Bc+​ meson lifetime using Bc+​→J/ψμ+νμ​X decays

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

Search for the doubly charmed baryon $Ξ_{cc}^{+}$

Measurement of the shape of the $Λ_{b}^{0} \to Λ_{c}^{+} μ^{-} ν$ differential decay rate

Study of $χ_{b}$ meson production in pp collisions at $s = 7$ and 8TeV and observation of the decay $χ_{b} \to Υ (3 S) γ$

Measurement of CP asymmetry in $B_{s}^{0} \to D_{s}^{\mp} K^{\pm}$ decays

Evidence for CP violation in $B^{+} \to p p ˉ K^{+}$ decays

Measurement of CP violation in $B_{s}^{0} \to ϕϕ$ decays

Effective lifetime measurements in the $B_{s}^{0} \to K^{+} K^{-}$ , $B^{0} \to K^{+} π^{-}$ and $B_{s}^{0} \to π^{+} K^{-}$ decays

Study of $Υ$ production and cold nuclear matter effects in pPb collisions at $s_{N N} = 5 TeV$

Observation of the resonant character of the $Z (4430)^{-}$ state

Evidence for the decay $B_{c}^{+} \to J / ψ 3 π^{+} 2 π^{-}$

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

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

Observation of photon polarization in the $b \to s γ$ transition

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

Measurement of the $B_{c}^{+}$ meson lifetime using $B_{c}^{+} \to J / ψ μ^{+} ν_{μ} X$ decays

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