A5035956372- 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
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Astrophysics and Cosmic Phenomena
- Nuclear physics research studies
- Noncommutative and Quantum Gravity Theories
- Human Pose and Action Recognition
- Robot Manipulation and Learning
- Anomaly Detection Techniques and Applications
- Cardiac electrophysiology and arrhythmias
- Ergonomics and Musculoskeletal Disorders
- Fuel Cells and Related Materials
- International Science and Diplomacy
- Cardiovascular Function and Risk Factors
- Neural Networks and Applications
- Radiation Detection and Scintillator Technologies
- Advanced Clustering Algorithms Research
- Reinforcement Learning in Robotics
Fermi National Accelerator Laboratory
2013-2024
Harbin Institute of Technology
2024
Northwestern Polytechnical University
2023-2024
Centro Brasileiro de Pesquisas Físicas
2010-2016
Laboratoire de Physique Nucléaire et de Hautes Énergies
2010-2013
Sorbonne Université
2010-2013
Université Paris Cité
2010-2013
Centre National de la Recherche Scientifique
2010-2013
Florida State University
2012
University of Illinois Chicago
2012
We report observation of the electroweak production single top quarks in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ based on $2.3\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ data collected by D0 detector Fermilab Tevatron Collider. Using events containing an isolated electron or muon and missing transverse energy, together with jets originating from fragmentation $b$ quarks, we measure a cross section...
We present a measurement of forward-backward asymmetry in top quark-antiquark production proton-antiproton collisions the final state containing lepton and at least four jets. Using dataset corresponding to an integrated luminosity $5.4\,\mathrm {fb}^{-1}$, collected by \DZ\ experiment Fermilab Tevatron Collider, we measure \ttbar\ be $(9.2 \pm 3.7)$% reconstruction level. When corrected for detector acceptance resolution, is found $(19.6 6.5)$%. also based on from quark decay, $(15.2...
We combine searches by the CDF and D0 Collaborations for associated production of a Higgs boson with $W$ or $Z$ subsequent decay to bottom-antibottom quark pair. The data, originating from Fermilab Tevatron $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$, correspond integrated luminosities up $9.7\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. are conducted mass in range $100--150\text{ }\mathrm{GeV}/{c}^{2}$. observe an excess events data compared background predictions,...
We report results from the first search for νμ→νe transitions by NOvA experiment. In an exposure equivalent to 2.74×1020 protons on target in upgraded NuMI beam at Fermilab, we observe 6 events Far Detector, compared a background expectation of 0.99±0.11(syst) based Near Detector measurement. A secondary analysis observes 11 with 1.07±0.14(syst). The 3.3σ excess observed primary disfavors 0.1π<δCP<0.5π inverted mass hierarchy 90% C.L.Received 19 January...
We measure the charge asymmetry A ≡ (N++ - N--)/(N++ + N--) of like-sign dimuon events in 6.1 fb-1 pp collisions recorded with D0 detector at a center-of-mass energy square root(s) = 1.96 TeV Fermilab Tevatron collider. From we extract semileptonic b-hadron decays: A(sl)(b) -0.009 57 ± 0.002 51(stat) 0.001 46(sys). It differs by 3.2 standard deviations from model prediction A(sl)(b)(SM) (-2.3(-0.6)(+0.5)) × 10(-4), and provides first evidence anomalous CP violation mixing neutral B mesons.
We have used a sample of $\ensuremath{\gamma}+3$ jets events collected by the D0 experiment with an integrated luminosity about $1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ to determine fraction double parton scattering (${f}_{\mathrm{DP}}$) in single $p\overline{p}$ collision at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$. The DP and effective cross section (${\ensuremath{\sigma}}_{\mathrm{eff}}$), process-independent scale parameter related density inside nucleon, are measured three...
The top quark is the heaviest known elementary particle, with a mass about 40 times larger than of its isospin partner, bottom quark. It decays almost 100% time to $W$ boson and Using top-antitop pairs at Tevatron proton-antiproton collider, CDF D0 Collaborations have measured quark's in different final states for integrated luminosities up $5.8\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. This paper reports on combination these measurements that results more precise value any individual...
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 combine searches by the CDF and D0 Collaborations for standard model Higgs boson with mass in range 90--200 GeV$/c^2$ produced gluon-gluon fusion, $WH$, $ZH$, $t{\bar{t}}H$, vector fusion processes, decaying $H\rightarrow b{\bar{b}}$, W^+W^-$, ZZ$, $H\rightarrow\tau^+\tau^-$, \gamma\gamma$ modes. The data correspond to integrated luminosities of up 10 fb$^{-1}$ were collected at Fermilab Tevatron $p{\bar{p}}$ collisions $\sqrt{s}=1.96$ TeV. are also interpreted context fermiophobic fourth...
We measure the charge asymmetry $A$ of like-sign dimuon events in 6.1 fb$^{-1}$ $p\bar{p}$ collisions recorded with D0 detector at a center-of-mass energy $\sqrt{s} = 1.96$ TeV Fermilab Tevatron collider. From $A$, we extract semileptonic $b$-hadron decays: $\aslb -0.00957 \pm 0.00251 ({\rm stat}) 0.00146 syst})$. This result differs by 3.2 standard deviations from model prediction $\aslb(SM) (-2.3^{+0.5}_{-0.6}) \times 10^{-4}$ and provides first evidence anomalous CP-violation mixing...
We present a search for charged Higgs bosons in top quark decays. analyze the \eplus, \muplus, $ee$, $eμ$, $μμ$, \etau and \mutau final states from pair production events, using data about 1${\text{fb}}^{-1}$ of integrated luminosity recorded by \dzero experiment at Fermilab Tevatron Collider. consider different scenarios possible boson decays, one where decays purely hadronically into charm strange quark, another it $τ$ lepton neutrino third both appear. extract limits on branching ratio...
We present an updated measurement of the anomalous like-sign dimuon charge asymmetry Aslb for semi-leptonic $b$-hadron decays in 9.0 fb^-1 p pbar collisions recorded with D0 detector at a center-of-mass energy sqrt{s} = 1.96 TeV Fermilab Tevatron collider. obtain (-0.787 +- 0.172(stat) 0.093 (syst))%. This result differs by 3.9 standard deviations from prediction model and provides evidence anomalously large CP violation neutral B decay. The dependence on muon impact parameter is consistent...
We present the results of a search for flavor changing neutral current decay B_s^0->mu^+mu^- using 6.1 fb^-1 ppbar collisions at sqrt(s) = 1.96 TeV collected by D0 experiment Fermilab Tevatron Collider. The observed number B_s^0 candidates is consistent with background expectations. resulting upper limit on branching fraction BR(B_s^0->mu^+mu^-) < 5.1 x 10^-8 95% C.L. This factor 2.4 better than that previous analysis and best to date.
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 summarize and combine direct measurements of the mass $W$ boson in $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ proton-antiproton collision data collected by CDF D0 experiments at Fermilab Tevatron Collider. Earlier from are combined with two latest, more precise measurements: a measurement electron muon channels using corresponding to $2.2\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity, channel $4.3\text{ luminosity. The resulting average for is...
This paper reports the first measurement using NOvA detectors of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ disappearance in a beam. The analysis uses 14 kton-equivalent exposure $2.74\ifmmode\times\else\texttimes\fi{}{10}^{20}$ protons-on-target from Fermilab NuMI Assuming normal neutrino mass hierarchy, we measure $\mathrm{\ensuremath{\Delta}}{m}_{32}^{2}=({2.52}_{\ensuremath{-}0.18}^{+0.20})\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}\text{ }\text{ }{\mathrm{eV}}^{2}$ and...
We combine six measurements of the inclusive top-quark pair (ttbar) production cross section (sigma_ttbar) from data collected with CDF and D0 detectors at Fermilab Tevatron proton anti-proton collisions sqrt{s} = 1.96 TeV. The correspond to integrated luminosities up 8.8 fb^{-1}. obtain a value sigma_ttbar 7.60 \pm 0.41 pb for mass m_t=172.5 GeV. contributions uncertainty are 0.20 statistical sources, 0.29 systematic 0.21 on luminosity. result is in good agreement standard model expectation...
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 combine measurements of the top quark pair production cross section in p¯p collisions ℓ+jets, ℓℓ, and τℓ final states (where ℓ is an electron or muon) at a center mass energy √s=1.96 TeV 1 fb−1 data collected with D0 detector. For 170 GeV/c2, we obtain σt¯t=8.18+0.98−0.87 pb agreement theoretical prediction. Based on predictions from higher order quantum chromodynamics, extract for combined t¯t section, consistent world average mass. In addition, ratios sections different are used to set...
We present the first measurement of dijet angular distributions in pp collisions at square root(s) = 1.96 TeV Fermilab Tevatron Collider. The is based on a dataset corresponding to an integrated luminosity 0.7 fb(-1) collected with D0 detector. Dijet have been measured over range masses, from 0.25 above 1.1 TeV. data are good agreement predictions perturbative QCD and used constrain new physics models including quark compositeness, large extra dimensions, TeV(-1) scale dimensions. For all...