Thomas Bauer
A5102824468- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Algebraic Geometry and Number Theory
- Pulsars and Gravitational Waves Research
- Polynomial and algebraic computation
- Commutative Algebra and Its Applications
- Advanced Algebra and Geometry
- Education Methods and Technologies
- Geometry and complex manifolds
- Particle Detector Development and Performance
- Geophysics and Gravity Measurements
- Gamma-ray bursts and supernovae
- Homotopy and Cohomology in Algebraic Topology
- Foot and Ankle Surgery
- Mathematics Education and Teaching Techniques
- Neutrino Physics Research
- Superconducting Materials and Applications
- Mathematics and Applications
- History and Theory of Mathematics
- Geometric and Algebraic Topology
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Historical Studies and Socio-cultural Analysis
- Historical, Literary, and Cultural Studies
Hôpital Ambroise-Paré
2016-2025
Centre Hospitalier d'Arras
2024
Philipps University of Marburg
2015-2024
Neu Ulm University of Applied Sciences
2018-2024
Assistance Publique – Hôpitaux de Paris
2021-2024
Académie des Beaux-Arts de Tournai
2024
Fraunhofer Institute of Optronics, System Technologies and Image Exploitation
2022-2023
University of Amsterdam
2023
Université de Limoges
2003-2022
Université Paris-Saclay
2021-2022
Advanced Virgo is the project to upgrade interferometric detector of gravitational waves, with aim increasing number observable galaxies (and thus detection rate) by three orders magnitude. The now in an advanced construction phase and assembly integration will be completed end 2015. part a network, alongside two LIGO detectors US GEO HF Germany, goal contributing early waves opening new window observation on universe. In this paper we describe main features outline status construction.
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...
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...
The isospin asymmetries of $B \to K\mu^+\mu^-$ and K^{*}\mu^+\mu^-$ decays the partial branching fractions $B^0 K^0\mu^+\mu^-$, $B^+ K^+\mu^+\mu^-$ K^{*+}\mu^+\mu^-$ are measured as functions dimuon mass squared, $q^2$. data used correspond to an integrated luminosity 3$~$fb$^{-1}$ from proton-proton collisions collected with LHCb detector at centre-of-mass energies 7$\,$TeV 8$\,$TeV in 2011 2012, respectively. both consistent Standard Model expectations. three fractions, while individually...
We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009 October 20, 2010. searched signals with total mass 2 25 solar masses; this includes binary neutron stars, black holes, consisting of hole star. The detectors were sensitive to systems up 40 Mpc distant further higher systems. No gravitational-wave detected. upper limits the rate coalescence as function mass, including results previous observations. cumulative...
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...
We present a search for gravitational waves from 116 known millisecond and young pulsars using data the fifth science run of LIGO detectors. For this search, ephemerides overlapping period were obtained all radio X-ray observations. demonstrate an updated method that allows small uncertainties in pulsar phase parameters to be included search. report no signal detection any targets therefore interpret our results as upper limits on wave strength. The most interesting are those pulsars....
Compact binary systems with neutron stars or black holes are one of the most promising sources for ground-based gravitational wave detectors. Gravitational radiation encodes rich information about source physics; thus parameter estimation and model selection crucial analysis steps any detection candidate events. Detailed models anticipated waveforms enable inference on several parameters, such as component masses, spins, sky location distance that essential new astrophysical studies these...
An angular analysis of the decay J/ψ→μ+μ- is performed to measure polarization prompt J/ψ mesons produced in pp collisions at [Formula: see text]. The dataset corresponds an integrated luminosity 0.37 fb-1 collected with LHCb detector. measurement presented as a function transverse momentum, pT, and rapidity, y, meson, kinematic region 2<pT<15 GeV/c 2.0<y<4.5.
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 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...
Gravitational waves from a variety of sources are predicted to superpose create stochastic background. This background is expected contain unique information throughout the history universe that unavailable through standard electromagnetic observations, making its study fundamental importance understanding evolution universe. We carry out search for with latest data LIGO and Virgo. Consistent predictions most gravitational-wave models, display no evidence signal. Assuming spectrum...
We present the results of a search for gravitational waves associated with 154 gamma-ray bursts (GRBs) that were detected by satellite-based experiments in 2009–2010, during sixth LIGO science run and second third Virgo runs. perform two distinct searches: modeled coalescences either neutron stars or star black hole, generic, unmodeled gravitational-wave bursts. find no evidence counterparts, any individual GRB this sample population as whole. For all GRBs we place lower bounds on distance...
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).