A5031029372- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Neutrino Physics Research
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Gamma-ray bursts and supernovae
- Superconducting Materials and Applications
- Advanced Data Storage Technologies
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- Nuclear reactor physics and engineering
- Nuclear physics research studies
- Big Data Technologies and Applications
- Noncommutative and Quantum Gravity Theories
- Radiation Therapy and Dosimetry
- Gas Dynamics and Kinetic Theory
Université Paris-Saclay
2016-2025
Institut de Recherche sur les Lois Fondamentales de l'Univers
2016-2025
CEA Paris-Saclay
2016-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2016-2025
Institute of High Energy Physics
2015-2024
Institute of High Energy Physics
2020-2024
A. Alikhanyan National Laboratory
2022-2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
University of Antwerp
2024
We report evidence of a narrow structure, $X(5568)$, in the decay sequence $X(5568) \rightarrow B_s^0 π^{\pm}$, $B_s^0 J/ψϕ$, $J/ψ\rightarrow μ^+ μ^-$, $ϕ\rightarrow K^+K^-$. This is for first instance hadronic state with valence quarks four different flavors. The mass and natural width this are measured to be $m = 5567.8 \pm 2.9 {\rm \thinspace (stat)} ^{+0.9}_{-1.9} (syst)}$ MeV/$c^2$ $Γ= 21.9 6.4 ^{+5.0}_{-2.5} (syst)} $ MeV/$c^2$. If B_s^* π^{\pm} γπ^{\pm}$ an unseen $γ$, $m(X(5568))$...
We study the W/Z pair production via two-photon exchange at LHC and give sensitivities on trilinear quartic gauge anomalous couplings between photons bosons for an integrated luminosity of 30 200 fb^{-1}. For simplicity to obtain lower backgrounds, only leptonic decays electroweak are considered.
We present a measurement of the W boson mass using data corresponding to 4.3fb^-1 integrated luminosity collected with D0 detector during Run II at Fermilab Tevatron p\bar{p} collider. With sample 1,677,394 -> e\nu candidate events, we measure M_W = 80.367 +/- 0.026 GeV. This result is combined an earlier determined independent sample, 1fb^-1 luminosity, yield 80.375 0.023
We report an updated measurement of the $CP$-violating phase, ${\ensuremath{\phi}}_{s}^{J/\ensuremath{\psi}\ensuremath{\phi}}$, and decay-width difference for two mass eigenstates, $\ensuremath{\Delta}{\ensuremath{\Gamma}}_{s}$, from flavor-tagged decay ${B}_{s}^{0}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}$. The data sample corresponds to integrated luminosity $8.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ accumulated with D0 detector using $p\overline{p}$ collisions...
We investigate the decay ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\phi}{K}^{+}$ in a search for $X(4140)$ state, narrow threshold resonance $J/\ensuremath{\psi}\ensuremath{\phi}$ system. The data sample corresponds to an integrated luminosity of $10.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$ collected by D0 experiment Fermilab Tevatron collider. observe mass peak with statistical significance 3.1...
We present a measurement of the forward–backward asymmetry in top quark–antiquark production using full Tevatron Run II data set collected by D0 experiment at Fermilab. The is performed lepton+jets final states new kinematic fitting algorithm for events with four or more jets and partial reconstruction only three jets. Corrected detector acceptance resolution effects, evaluated to be AFB=(10.6±3.0)%. Results are consistent standard model predictions which range from 5.0% 8.8%. also...
We present the observation of doubly-produced $J/\psi$ mesons with D0 detector at Fermilab in $p\bar{p}$ collisions $\sqrt{s}=1.96$ TeV. The production cross section for both singly and is measured using a sample an integrated luminosity 8.1fb$^{-1}$. For first time, double separated into contributions due to single parton scatterings. Using these measurements, we determine effective $\sigma_{eff}$, parameter characterizing spatial area parton-parton interactions related density inside nucleon.
We describe an analysis comparing the $p\overline{p}$ elastic cross section as measured by D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in $pp$ collisions TOTEM 2.76, 7, 8, and 13 using model-independent approach. The sections, extrapolated $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$, are compared with measurement region diffractive minimum second maximum section. two data sets disagree $3.4\ensuremath{\sigma}$ level thus provide evidence for $t$-channel exchange...
We present an improved determination of the total width top quark, ${\ensuremath{\Gamma}}_{t}$, using $5.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity collected by D0 Collaboration at Tevatron $p\overline{p}$ Collider. The ${\ensuremath{\Gamma}}_{t}$ is extracted from partial decay $\ensuremath{\Gamma}(t\ensuremath{\rightarrow}Wb)$ and branching fraction $\mathcal{B}(t\ensuremath{\rightarrow}Wb)$. obtained $t$-channel single top-quark production cross section...
We present a measurement of the inclusive jet cross section using Run II cone algorithm and data collected by D0 experiment in p pbar collisions at center-of-mass energy sqrt(s)=1.96 TeV, corresponding to an integrated luminosity 0.70 fb^(-1). The calibration method used extract are described. discuss main uncertainties, which dominated scale uncertainty. results cover transverse momenta from 50 GeV 600 with rapidities range -2.4 2.4 compared predictions recent proton parton distribution...
The goal of this report is to give a comprehensive overview the rich field forward physics, with special attention topics that can be studied at LHC.The starts presenting selection Monte Carlo simulation tools currently available, chapter 2, then enters phenomenology QCD low, 3, and high, 4, momentum transfer, while unique scattering conditions central exclusive production are analyzed in 5.The last two experimental topics, Cosmic Ray Heavy Ion physics presented 6 7 respectively.Chapter 8...
We present a measurement of the elastic differential cross section $d\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}p\overline{p})/dt$ as function four-momentum-transfer squared $t$. The data sample corresponds to an integrated luminosity $\ensuremath{\approx}31\text{ }\text{ }{\mathrm{nb}}^{\ensuremath{-}1}$ collected with D0 detector using dedicated Tevatron $p\overline{p}$ Collider operating conditions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$ and covers range $0.26<|t|<1.2\text{...
We present a measurement of the electron charge asymmetry in $p\overline{p}\ensuremath{\rightarrow}W+X\ensuremath{\rightarrow}e\ensuremath{\nu}+X$ events at center-of-mass energy 1.96 TeV, using data corresponding to $9.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity collected with D0 detector Fermilab Tevatron Collider. The is measured as function pseudorapidity and presented five kinematic bins based on transverse missing event. compared next-to-leading-order...
We report evidence for the simultaneous production of $J/\psi$ and $\Upsilon$ mesons in 8.1 fb$^{-1}$ data collected at $\sqrt{s}=$1.96 TeV by D0 experiment Fermilab $p \bar p$ Tevatron Collider. Events with these characteristics are expected to be produced predominantly gluon-gluon interactions. In this analysis, we extract effective cross section characterizing initial parton spatial distribution, $\sigma_{eff}=2.2\pm 0.7\mbox{(stat)} \pm 0.9 \mbox{(syst)} ~\mbox{mb}$.
We present a measurement of the ratio events with correlated t and tbar spins to total number ttbar events. This f is evaluated using matrix-element-based approach in single lepton (electron or muon) at least four jets. analyze ppbar collisions data corresponding an integrated luminosity 5.3 fb^-1 collected D0 detector Fermilab Tevatron collider operating center mass energy $\sqrt{s}=1.96$ TeV. Combining this result recent dilepton final states, we find agreement standard model. In addition,...
We present a measurement of the semileptonic mixing asymmetry for ${B}^{0}$ mesons, ${a}_{\mathrm{sl}}^{d}$, using two independent decay channels: ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{D}^{\ensuremath{-}}X$, with ${D}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ensuremath{-}}$; and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{D}^{*\ensuremath{-}}X$,...
We measure the inclusive single muon charge asymmetry and like-sign dimuon in $p \bar{p}$ collisions using full data set of 10.4 fb$^{-1}$ collected with D0 detector at Fermilab Tevatron. The standard model predictions asymmetries induced by CP violation are small magnitude compared to current experimental precision, so non-zero measurements could indicate new sources violation. differ from these a significance 3.6 deviations. These results interpreted framework $B$ meson mixing within CKM...
We measure the mass of top quark in lepton+jets final states using full sample pp collision data collected by D0 experiment Run II Fermilab Tevatron Collider at sqrt[s] = 1.96 TeV, corresponding to 9.7 fb(-1) integrated luminosity. use a matrix element technique that calculates probabilities for each event result from tt production or background. The overall jet energy scale is constrained situ W boson. m(t) 174.98 ± 0.76 GeV. This constitutes most precise single measurement top-quark mass.
We determine the fraction of events with double parton (DP) scattering in a single $p\overline{p}$ collision at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ samples $\ensuremath{\gamma}+3$ jet and $\ensuremath{\gamma}+b/c\text{ }\text{jet}+2$ collected D0 detector corresponding to an integrated luminosity about $8.7\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The DP fractions effective cross sections (${\ensuremath{\sigma}}_{\text{eff}}$) are measured for both event using same kinematic...
We present a measurement of the average value new observable at hadron colliders that is sensitive to QCD dynamics and strong coupling constant, while being only weakly parton distribution functions. The measures angular correlations jets defined as number neighboring above given transverse momentum threshold which accompany jet within distance Delta-R in plane rapidity azimuthal angle. ensemble over all an inclusive sample measured results are presented function jets, different regions for...
We present a comprehensive analysis of inclusive W(→eν)+n-jet (n≥1, 2, 3, 4) production in proton-antiproton collisions at center-of-mass energy 1.96 TeV the Tevatron collider using 3.7 fb−1 data set collected by D0 detector. Differential cross sections are presented as function jet rapidities (y), lepton transverse momentum (pT) and pseudorapidity (η), scalar sum energies W boson all jets (HT), leading dijet pT invariant mass, rapidity separations for variety pairings pT-ordered...
Using data corresponding to an integrated luminosity of $1.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, we observe a narrow mass state decaying into $\ensuremath{\Upsilon}(1S)+\ensuremath{\gamma}$, where the $\ensuremath{\Upsilon}(1S)$ meson is detected by its decay pair oppositely charged muons, and photon identified through conversion electron-positron pair. The significance this observation 5.6 standard deviations. centered at...
We present measurements of lepton (l) angular distributions in ttbar -> W+ b W- l+ nu l- nubar bbar decays produced ppbar collisions at a center-of-mass energy sqrt(s)=1.96TeV, where l is an electron or muon. Using data corresponding to integrated luminosity 5.4fb^-1, collected with the D0 detector Fermilab Collider, we find that relative anti-protons and protons are agreement each other. Combining two correcting for acceptance obtain forward-backward asymmetry A^l_FB = (5.8 +- 5.1(stat)...
We present a measurement of the muon charge asymmetry from decay $W$ boson via $W\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\nu}$ using $7.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity collected with D0 detector at Fermilab Tevatron Collider $\sqrt{s}=1.96\text{ }\mathrm{TeV}$. The is presented in two kinematic regions transverse momentum and event missing energy: (${p}_{T}^{\ensuremath{\mu}}>25\text{ }\mathrm{GeV}$,...