A5030300539- 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
- Augmented Reality Applications
- Virtual Reality Applications and Impacts
- Innovative Human-Technology Interaction
- Interactive and Immersive Displays
- Pulsars and Gravitational Waves Research
- Technology Use by Older Adults
- Spatial Cognition and Navigation
- Tactile and Sensory Interactions
- Dementia and Cognitive Impairment Research
- Aging and Gerontology Research
- Nuclear physics research studies
- Radio Astronomy Observations and Technology
- Particle accelerators and beam dynamics
- Aging, Elder Care, and Social Issues
York University
2020-2025
Fermi National Accelerator Laboratory
2013-2024
Indian Institute of Technology Hyderabad
2023-2024
Toronto Metropolitan University
2019-2021
Queensland University of Technology
2016-2021
Government Medical College
2020
Rogers (United States)
2019
University of Minnesota
2016-2017
Czech Academy of Sciences, Institute of Physics
2000-2016
Charles University
2000-2016
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...
Abstract The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohertz gravitational-wave background (GWB). Given that each PTA made different choices in modeling their data, we perform comparison GWB individual noise parameters across results reported from PTAs constitute International Pulsar Timing Array (IPTA). We show despite making choices, there is no significant...
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 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
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 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...
This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of $6.05\times10^{20}$ protons-on-target the NuMI beam at Fermi National Accelerator Laboratory. The measurement probes muon-tau symmetry hypothesis that requires maximal mixing ($\theta_{23} = \pi/4$). Assuming normal mass hierarchy, we find $\Delta m^2 (2.67 \pm 0.11)\times 10^{-3}$ eV$^2$ and $\sin^2 \theta_{23}$ two statistically degenerate values...
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 present the results of a search for continuous gravitational wave signals (CGWs) in second data release (DR2) European Pulsar Timing Array (EPTA) collaboration. The most significant candidate event from this has frequency 4-5 nHz. Such signal could be generated by supermassive black hole binary (SMBHB) local Universe. follow-up analysis using both Bayesian and frequentist methods. gives Bayes factor 4 favor presence CGW over common uncorrelated noise process, while estimates p-value to...
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...
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, $\sigma_{eff}=2.2\pm 0.7\mbox{(stat)} \pm 0.9 \mbox{(syst)} ~\mbox{mb}$.
Bloom syndrome and Werner are genome instability disorders, which result from mutations in two different genes encoding helicases. Both enzymes members of the RecQ family helicases, have a 3′ → 5′ polarity, require single strand tail. In addition to their activity unwinding duplex substrates, recent studies show that able unwind G2 G4 tetraplexes, prompting speculation failure resolve these structures cells may contribute instability. The triple helix is another alternate DNA structure can...
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...
Evolving human-wildlife interactions have contributed to emerging zoonoses outbreaks, and pandemic prevention policy for wildlife management conservation requires enhanced consideration from this perspective. However, the risk of unintended consequences is high. In study, we aimed assess how unrecognised complexity system adaptation can lead failure, these dynamics may impact zoonotic spillover food outcomes. This study focused on three countries: China, Democratic Republic Congo (DRC)...
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...