A5056679476- 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
- Neutrino Physics Research
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Particle Accelerators and Free-Electron Lasers
- Black Holes and Theoretical Physics
- Noncommutative and Quantum Gravity Theories
- Advanced Condensed Matter Physics
- Transition Metal Oxide Nanomaterials
- Magnetic and transport properties of perovskites and related materials
- Magneto-Optical Properties and Applications
- COVID-19 epidemiological studies
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- International Science and Diplomacy
- ZnO doping and properties
- Vaccine Coverage and Hesitancy
- Immune responses and vaccinations
Manav Rachna International Institute of Research and Studies
2024
University of Mississippi
2012-2024
Indian Institute of Technology Delhi
2024
King Edward Memorial Hospital and Seth G.S. Medical College
2024
University of Science and Technology of China
2016
Centro Brasileiro de Pesquisas Físicas
2013-2016
Czech Academy of Sciences
2016
Czech Academy of Sciences, Institute of Physics
2016
Universidad San Francisco de Quito
2016
Charles University
2016
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,...
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 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 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...
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 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 report the first observation of single-top-quark production in s channel through combination CDF and D0 measurements cross section proton-antiproton collisions at a center-of-mass energy 1.96 TeV. The data correspond to total integrated luminosities up 9.7 fb−1 per experiment. measured is σs=1.29+0.26−0.24 pb. probability observing statistical fluctuation background observed size or larger 1.8×10−10, corresponding significance 6.3 standard deviations for presence an s-channel contribution...
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 present the final combination of CDF and D0 measurements cross sections for single-top-quark production in proton-antiproton collisions at a center-of-mass energy 1.96 TeV. The data correspond to total integrated luminosities up $9.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ per experiment. $t$-channel section is measured be ${\ensuremath{\sigma}}_{t}=2.2{5}_{\ensuremath{-}0.31}^{+0.29}\text{ }\mathrm{pb}$. also combinations two-dimensional $s$- vs section. In addition, we give...
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, $\sigma_{eff}=2.2\pm 0.7\mbox{(stat)} \pm 0.9 \mbox{(syst)} ~\mbox{mb}$.
Drell-Yan lepton pairs produced in the process $p \bar{p} \rightarrow \ell^+\ell^- + X$ through an intermediate $\gamma^*/Z$ boson have asymmetry their angular distribution related to spontaneous symmetry breaking of electroweak force and associated mixing its neutral gauge bosons. The CDF D0 experiments measured effective-leptonic parameter $\sin^2\theta^{\rm lept}_{\rm eff}$ using electron muon selected from full Tevatron proton-antiproton data sets collected 2001-2011, corresponding 9-10...
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...
We report the combination of recent measurements helicity W boson from top quark decay by CDF and D0 collaborations, based on data samples corresponding to integrated luminosities 2.7 - 5.4 fb^-1 ppbar collisions collected during Run II Fermilab Tevatron Collider. Combining that simultaneously determine fractions bosons with longitudinal (f0) right-handed (f+) helicities, we find f0 = 0.722 \pm 0.081 [\pm 0.062 (stat.) 0.052 (syst.)] f+ -0.033 0.046 0.034 0.031 (syst.)]. where one is fixed...
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...