W. Qian

activity

20102026

most citedMeasurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region

164 citations · 743 across the 14 of their papers we have counts for

collaborators

14 papers

hep-ex2026

Leakage current evolution in LHCb VELO sensors during Run 1-2 LHC data taking period

M. Pycior, T. Szumlak, A. Oblakowska-Mucha +33

Silicon detectors operating in the harsh mixed-hadron radiation environment of modern high-energy physics experiments suffer progressive bulk damage, manifesting macroscopically as…

cs.LG2023★ 1 cited

Class Incremental Learning via Likelihood Ratio Based Task Prediction

Haowei Lin, Yijia Shao, Weinan Qian +3

Class incremental learning (CIL) is a challenging setting of continual learning, which learns a series of tasks sequentially. Each task consists of a set of unique classes. The key…

physics.ins-det2022

Measurement of thermal properties of the LHCb VELO detector using track-based software alignment

The LHCb VELO group

The thermal properties of the LHCb Vertex Locator (VELO) are studied using the real-time detector alignment procedure. The variation of the position and orientation of the detector…

hep-ex2018★ 76 cited

Observation of two resonances in the $Λ_{b}^{0} π^{\pm}$ systems and precise measurement of $Σ_{b}^{\pm}$ and $Σ_{b}^{*\pm}$ properties

LHCb collaboration, R. Aaij, C. Abellán Beteta +837

The first observation of two structures consistent with resonances in the final states $Λ_{b}^{0} π^{-}$ and $Λ_{b}^{0} π^{+}$ is reported using samples of $pp$ collision data collected by the…

physics.ins-det2018★ 27 cited

Mapping the material in the LHCb vertex locator using secondary hadronic interactions

M. Alexander, W. Barter, A. Bay +63

Precise knowledge of the location of the material in the LHCb vertex locator (VELO) is essential to reducing background in searches for long-lived exotic particles, and in identify…

hep-ex2015★ 22 cited

Measurement of the time-dependent CP asymmetries in $B_{s}^{0} \to J / ψ K_{S}^{0}$

LHCb collaboration, R. Aaij, B. Adeva +699

The first measurement of decay-time-dependent CP asymmetries in the decay $B_{s}^{0} \to J / ψ K_{S}^{0}$ and an updated measurement of the ratio of branching fractions $\mathcal…

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★ 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-ex2013★ 52 cited

Measurement of the relative rate of prompt $χ_{c 0}$ , $χ_{c 1}$ and $χ_{c 2}$ production at $s = 7$ TeV

LHCb collaboration, R. Aaij, B. Adeva +648

Prompt production of charmonium $χ_{c 0}$ , $χ_{c 1}$ and $χ_{c 2}$ mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of $s = 7$ TeV. The $χ_{c…

hep-ex2013★ 120 cited

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

LHCb collaboration, R. Aaij, B. Adeva +647

The charmless decays $B^{\pm} \to K^{\pm} π^{+} π^{-}$ and $B^{\pm} \to K^{\pm} K^{+} K^{-}$ are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb $^{- 1}$ , collected b…

hep-ex2013★ 17 cited

Searches for $B_{(s)}^{0} \to J / ψ p p$ and $B^{+} \to J / ψ p p π^{+}$ decays

LHCb collaboration, R. Aaij, B. Adeva +650

The results of searches for $B_{(s)}^{0} \to J / ψ p p$ and $B^{+} \to J / ψ p p π^{+}$ decays are reported. The analysis is based on a data sample, corre…

hep-ex2013★ 90 cited

Production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV

LHCb collaboration, R. Aaij, C. Abellan Beteta +631

The production of J/psi and Upsilon mesons in pp collisions at sqrt(s) = 8 TeV is studied with the LHCb detector. The J/psi and Upsilon mesons are reconstructed in the mu+mu- decay…

hep-ex2012★ 62 cited

First observation of the decay $B_{s 2}^{} (5840)^{0} \to B^{+} K^{-}$ and studies of excited $B_{s}$ mesons

LHCb collaboration, R. Aaij, C. Abellan Beteta +621

Properties of the orbitally excited (L=1) $B_{s}$ states are studied using 1.0 fb $^{- 1}$ of pp collisions at $s = 7$ TeV collected with the LHCb detector. The first observation…

hep-ex2010★ 164 cited

Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region

LHCb Collaboration, R. Aaij, C. Abellan Beteta +628

Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the b anti-b production cross-section in proton-proton collisions at a centre-of-mass ene…

Leakage current evolution in LHCb VELO sensors during Run 1-2 LHC data taking period

Class Incremental Learning via Likelihood Ratio Based Task Prediction

Measurement of thermal properties of the LHCb VELO detector using track-based software alignment

Observation of two resonances in the Λb0​π± systems and precise measurement of Σb±​ and Σb∗±​ properties

Mapping the material in the LHCb vertex locator using secondary hadronic interactions

Measurement of the time-dependent CP asymmetries in Bs0​→J/ψKS0​

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

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

Measurement of the relative rate of prompt χc0​, χc1​ and χc2​ production at s​=7TeV

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

Searches for B(s)0​→J/ψpp​ and B+→J/ψpp​π+ decays