C. Adrover
A5055214304- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Archaeological and Historical Studies
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Black Holes and Theoretical Physics
- Medieval Architecture and Archaeology
- Particle Accelerators and Free-Electron Lasers
- Archaeological and Geological Studies
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Galician and Iberian cultural studies
- Medieval European Literature and History
- Spanish Linguistics and Language Studies
- Computational Physics and Python Applications
- HIV, Drug Use, Sexual Risk
- Spam and Phishing Detection
- Lexicography and Language Studies
- Data-Driven Disease Surveillance
- Spanish Literature and Culture Studies
- Mediterranean and Iberian flora and fauna
- Historical Studies on Spain
Aix-Marseille Université
2010-2020
Centre National de la Recherche Scientifique
2010-2020
Pennsylvania State University
2015
Center for Disease Dynamics, Economics & Policy
2015
University of Zurich
2013
Centre de physique des particules de Marseille
2013
Institut National de Physique Nucléaire et de Physique des Particules
2013
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
2013
Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca
2013
Istituto Nazionale di Fisica Nucleare, Sezione di Padova
2013
We present a measurement of form-factor-independent angular observables in the decay ${B}^{0}\ensuremath{\rightarrow}{K}^{*}(892{)}^{0}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. The analysis is based on data sample corresponding to an integrated luminosity $1.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected by LHCb experiment $pp$ collisions at center-of-mass energy 7 TeV. Four are measured six bins dimuon invariant mass squared ${q}^{2}$ range...
A search for the rare decays ${B}_{s}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ is performed with data collected in 2011 2012 LHCb experiment at Large Hadron Collider. The samples comprise $1.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of proton-proton collisions $\sqrt{s}=8\text{ }\mathrm{TeV}$ $1.0\text{ $\sqrt{s}=7\text{ }\mathrm{TeV}$. We...
The quantum numbers of the X(3872) meson are determined to be JPC = 1++ based on angular correlations in B+ K+ decays, where pi+pi- J/psi and \mu+\mu-. data correspond 1.0 fb-1 pp collisions collected by LHCb detector. only alternative assignment allowed previous measurements, JPC=2-+, is rejected with a confidence level equivalent more than eight Gaussian standard deviations using likelihood-ratio test full phase space. This result favors exotic explanations state.
The production of J/psi mesons in proton-proton collisions at sqrt(s)=7 TeV is studied with the LHCb detector LHC. differential cross-section for prompt measured as a function transverse momentum pT and rapidity y fiducial region 0<pT<14 GeV/c 2.0<y<4.5. fraction from b-hadron decays are also same ranges. analysis based on data sample corresponding to an integrated luminosity 5.2pb-1. cross-sections over 10.52 +/- 0.04 1.40 +1.64/-2.20 mub 1.14 0.01 0.16 decays, where first uncertainty...
A search for the rare decays ${B}_{s}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ is performed at LHCb experiment. The data analyzed correspond to an integrated luminosity of $1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $pp$ collisions a center-of-mass energy 7 TeV $2\text{ 8 TeV. An excess signal candidates with respect background expectation seen...
During 2011 the LHCb experiment at CERN collected 1.0 fb−1 of $\sqrt{s} = 7\mbox{~TeV}$ pp collisions. Due to large heavy quark production cross-sections, these data provide unprecedented samples flavoured hadrons. The first results from have made a significant impact on flavour physics landscape and definitively proved concept dedicated in forward region hadron collider. This document discusses implications measurements classes extensions Standard Model, bearing mind interplay with searches...
Charm production at the LHC in pp collisions s=7TeV is studied with LHCb detector. The decays D0→K−π+, D+→K−π+π+, D⁎+→D0(K−π+)π+, Ds+→ϕ(K−K+)π+, Λc+→pK−π+, and their charge conjugates are analysed a data set corresponding to an integrated luminosity of 15 nb−1. Differential cross-sections dσ/dpT measured for prompt five charmed hadron species bins transverse momentum rapidity region 0<pT<8GeV/c 2.0<y<4.5. Theoretical predictions compared differential cross-sections. charm hadrons computed...
Abstract Using 34.7 pb −1 of data collected with the LHCb detector, inclusive production X (3872) meson in pp collisions at $\sqrt{s}=7\mbox{~TeV}$ is observed for first time. Candidates are selected (3872)→ J / ψπ + π − decay mode, and used to measure "Equation missing" where σ ( → (3872)+anything) cross section mesons rapidity range 2.5–4.5 transverse momentum 5–20 GeV/ c . In addition masses both ψ (2 S ) mesons, reconstructed final state, measured be $$m_{X(3872)} = 3871.95 \pm0.48 \...
Measurements of $b$ hadron production ratios in proton-proton collisions at a centre-of-mass energy 7 TeV with an integrated luminosity 3 pb$^{-1}$ are presented. We study the strange $B$ meson to light $f_s/(f_u+f_d)$ and $\Lambda_b^0$ baryon $f_{\Lambda_b}/(f_u+f_d)$ as function charmed hadron-muon pair transverse momentum $p_T$ pseudorapidity $\eta$, for between 0 14 GeV $\eta$ 2 5. find that is consistent being independent $p_{\rm T}$ we determine = 0.134$\pm$ 0.004 $^{+0.011}_{-0.010}$,...
The production of $J/\psi$ pairs in proton-proton collisions at a centre-of-mass energy 7 TeV has been observed using an integrated luminosity $37.5 pb^{-1}$ collected with the LHCb detector. cross-section for both \jpsi rapidity range $2<y^{J/\psi}<4.5$ and transverse momentum $p_{T}^{J/\psi}<10 GeV/c$ is $$ \sigma^{J/\psi J/\psi} = 5.1\pm1.0\pm1.1 nb,$$ where first uncertainty statistical second systematic.
Decays of b hadrons into final states containing a D0 meson and muon are used to measure the anti-b production cross-section in proton-proton collisions at centre-of-mass energy 7 TeV LHC. In pseudorapidity interval 2 < eta 6 integrated over all transverse momenta we find that average produce b-flavoured or anti-b-flavoured is (75.3 +/- 5.4 13.0) microbarns.
A bstract The relative production rate of $ B_s^0 and B 0 mesons is determined with the hadronic decays B_s^0\to D_s^{-}{\pi^{+}} → D − K + . measurement uses data corresponding to 1.0 fb −1 pp collisions at a centre-of-mass energy \sqrt{s}=7 TeV recorded in forward region LHCb experiment. ratio rates, f s /f d , measured be 238 ± 004 015 021, where first uncertainty statistical, second systematic, third theoretical. This combined previous obtain = 256 020. dependence on transverse momentum...
Using pp collision data corresponding to an integrated luminosity of 1.0 fb(-1) and collected by LHCb in 2011 at a center-of-mass energy 7 TeV, we report the measurement direct CP violation B(s)(0)→K(-)π(+) decays, A(CP)(B(s)(0)→K(-)π(+)=0.27±0.04 (stat)±0.01 (syst), with significance exceeding 5 standard deviations. This is first observation decays B(s)(0) mesons. Furthermore, provide improved determination B(0)→K(+)π(-) A(CP)(B(0)→K(+)π(-)=-0.080±0.007 (stat)±0.003 which most precise this...
The angular distribution and differential branching fraction of the decay $B^{0} \to K^{*0} \mu^{+}\mu^{-}$ are studied using a data sample, collected by LHCb experiment in $pp$ collisions at $\sqrt{s}=7\,{\rm TeV}$, corresponding to an integrated luminosity $1.0\,{\rm fb}^{-1}$. Several observables measured bins dimuon invariant mass squared, $q^{2}$. A first measurement zero-crossing point forward-backward asymmetry system is also presented. be $q_{0}^{2} = 4.9 \pm 0.9 \,{\rm...
The production of J/ψ mesons with rapidity 1.5 < y 4.0 or −5.0 −2.5 and transverse momentum p T 14 GeV/c is studied the LHCb detector in proton-lead collisions at a nucleon-nucleon centre-of-mass energy $ \sqrt{{{s_{NN }}}} = 5TeV. are reconstructed using dimuon decay mode. analysis based on data sample corresponding to an integrated luminosity about 1.6 nb−1. For first time nuclear modification factor forward-backward ratio determined separately for prompt from b-hadron decays. Clear...
The time-dependent $CP$ asymmetry in ${B}_{s}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{+}{K}^{\ensuremath{-}}$ decays is measured using $pp$ collision data at $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$, corresponding to an integrated luminosity of $1.0\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected with the LHCb detector. decay-time distribution characterized by decay widths ${\ensuremath{\Gamma}}_{\mathrm{L}}$ and ${\ensuremath{\Gamma}}_{\mathrm{H}}$ light heavy mass eigenstates...
We present a measurement of the time-dependent $CP$-violating asymmetry in ${B}_{s}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}$ decays, using data collected with LHCb detector at LHC. The decay time distribution is characterized by widths ${\ensuremath{\Gamma}}_{H}$ and ${\ensuremath{\Gamma}}_{L}$ heavy light mass eigenstates, respectively, ${B}_{s}^{0}\ensuremath{-}{\overline{B}}_{s}^{0}$ system phase ${\ensuremath{\phi}}_{s}$. In sample about 8500 events isolated from...
Using pp collision data corresponding to 1.0 fb(-1) integrated luminosity collected by the LHCb detector, two narrow states are observed in Λ(b)(0)π(+)π(-) spectrum with masses 5911.97±0.12(stat)±0.02(syst)±0.66(Λ(b)(0) mass) MeV/c(2) and 5919.77±0.08(stat)±0.02(syst)±0.66(Λ(b)(0) MeV/c(2). The significances of observations 5.2 10.2 standard deviations, respectively. These interpreted as orbitally excited Λ(b)(0) baryons, Λ(b)(*0)(5912) Λ(b)(*0)(5920).
The production of $J/\psi$ mesons accompanied by open charm, and pairs charm hadrons are observed in pp collisions at a centre-of-mass energy 7 TeV using an integrated luminosity $355pb^{-1}$ collected with the LHCb detector. Model independent measurements absolute cross-sections given together ratios to measured cross-sections. properties these events studied compared theoretical predictions.
The charmless decays $B^{\pm}\to K^{\pm}\pi^+\pi^-$ and K^{\pm}K^+K^-$ are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb$^{-1}$, collected by LHCb in 2011. inclusive charge asymmetries these modes measured as $A_{C\!P}(B^{\pm}\to K^{\pm}\pi^+\pi^-) = 0.032 \pm 0.008 \stat 0.004 \syst 0.007 (J\psi K^{\pm})$ K^{\pm}K^+K^-) -0.043 0.009 0.003 K^{\pm})$, where the third uncertainty is due $C\!P$ asymmetry J\psi K^{\pm}$ reference mode. significance K^{\pm}K^+K^-)$...
The charmless decays ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ and ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ are reconstructed in a data set of $pp$ collisions with an integrated luminosity $1.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ center-of-mass energy 7 TeV,...
Received 13 March 2012DOI:https://doi.org/10.1103/PhysRevLett.108.129903This article is available under the terms of Creative Commons Attribution 3.0 License. Further distribution this work must maintain attribution to author(s) and published article’s title, journal citation, DOI.© 2012 American Physical Society