A5100914243- 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
- Black Holes and Theoretical Physics
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Medical Imaging Techniques and Applications
- Distributed and Parallel Computing Systems
- Nuclear reactor physics and engineering
- Cold Atom Physics and Bose-Einstein Condensates
- Statistical Methods and Bayesian Inference
- Radio Astronomy Observations and Technology
- Crystallography and Radiation Phenomena
- Scientific Measurement and Uncertainty Evaluation
- Relativity and Gravitational Theory
- Atomic and Subatomic Physics Research
- Advanced X-ray and CT Imaging
- Radiomics and Machine Learning in Medical Imaging
Princeton University
2012-2022
Deutsches Elektronen-Synchrotron DESY
2010-2014
National Space Agency
2014
European Organization for Nuclear Research
2010-2014
Malaysian Nuclear Agency
2014
Tel Aviv University
2014
Sri Guru Granth Sahib World University
2014
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
2014
University of Puerto Rico-Mayaguez
2014
Universität Hamburg
2002-2012
Measurements of the jet energy calibration and transverse momentum resolution in CMS are presented, performed with a data sample collected proton-proton collisions at centre-of-mass 7TeV, corresponding to an integrated luminosity 36pb−1. The balance dijet γ/Z+jets events is used measure response detector, as well resolution. results presented for three different methods reconstruct jets: calorimeter-based approach, ``Jet-Plus-Track'' which improves measurement calorimeter jets by exploiting...
A measurement of inclusive W and Z production cross sections in pp collisions at $ \sqrt {s} = 7 TeV is presented. The electron muon decay channels are analyzed a data sample collected with the CMS detector LHC corresponding to an integrated luminosity 36 pb−1. measured σ(pp → WX) × \mathcal{B}\left( {{\text{W}} \to \ell \nu } \right) 10.31 ± 0.02 (stat.) 0.09 (syst.) 0.10 (th.) 0.41 (lumi.) nb ZX) {{\text{Z}} {\ell^{+} }{\ell^{-} }} 0.974 0.007 0.018 0.039 nb, limited dilepton invariant...
A search for events with jets and missing transverse energy is performed in a data sample of $pp$ collisions collected at $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$ by the CMS experiment LHC. The analyzed corresponds to an integrated luminosity $1.14\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. In this search, kinematic variable ${\ensuremath{\alpha}}_{\mathrm{T}}$ used as main discriminator between genuine misreconstructed energy. No excess over standard model expectation found. Exclusion limits...
A search for narrow resonances with a mass of at least 1 TeV in the dijet spectrum is performed using pp collisions sqrt(s)=7 corresponding to an integrated luminosity inverse femtobarn, collected by CMS experiment LHC. No are observed. Upper limits 95% confidence level presented on product resonance cross section, branching fraction into dijets, and acceptance, separately decays quark-quark, quark-gluon, gluon-gluon pairs. The data exclude new particles predicted following models level:...
A measurement is presented of the charged hadron multiplicity in hadronic PbPb collisions, as a function pseudorapidity and centrality, at collision energy 2.76 TeV per nucleon pair. The data sample collected using CMS detector minimum-bias trigger, with solenoid off. number hadrons measured both by counting reconstructed particle hits forming hit doublets pairs layers pixel detector. two methods give consistent results. density, dN ch /dη|η=0, for head-on collisions found to be 1612 ± 55,...
The performance of tau-lepton reconstruction and identification algorithms is studied using a data sample proton-proton collisions at sqrt(s)=7 TeV, corresponding to an integrated luminosity 36 inverse picobarns collected with the CMS detector LHC. tau leptons that decay into one or three charged hadrons, zero more short-lived neutral neutrino are identified final-state particles reconstructed in tracker electromagnetic calorimeter. efficiency measured produced Z-boson decays....
A measurement of the differential cross section for inclusive production isolated prompt photons in proton-proton collisions at a center-of-mass energy 7 TeV is presented. The data sample corresponds to an integrated luminosity $36\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ recorded by CMS detector LHC. covers pseudorapidity range $|\ensuremath{\eta}|<2.5$ and transverse $25<{E}_{\mathrm{T}}<400\text{ }\mathrm{GeV}$, corresponding kinematic region $0.007<{x}_{\mathrm{T}}<0.114$. Photon...
Measurements of jet production rates in association with W and Z bosons for transverse momenta above 30 GeV are reported, using a sample proton-proton collision events recorded by CMS at sqrt(s) = 7 TeV, corresponding to an integrated luminosity 36 inverse picobarns. The study includes the measurement normalized inclusive jets sigma(V + >= n jets)/sigma(V), where V represents either or Z. In addition, ratio cross sections charge asymmetry as function number associated measured. A test...
A multivariate likelihood method to measure electroweak couplings with the Drell-Yan process at LHC is presented. The described by dilepton rapidity, invariant mass, and decay angle distributions. ambiguity due unknown assignment of scattered constituent quark antiquark two protons in a collision resolved statistically using correlations between observables. applied sample dimuon events from proton-proton collisions sqrt(s) = 7 TeV collected CMS experiment LHC, corresponding an integrated...
A search is performed for heavy particle pairs produced in $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$ proton-proton collisions with $35\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of data collected by the CMS experiment at LHC. The sensitive to squarks and gluinos generic supersymmetry models, provided they are kinematically accessible, minimal assumptions on properties lightest superpartner particle. kinematic consistency selected events tested against hypothesis pair production using...
A search for pair-produced heavy vectorlike charge-$2/3$ quarks, $T$, in $pp$ collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector LHC. Events consistent flavor-changing-neutral-current decay $T$ quark to top and $Z$ boson are selected by requiring two leptons from $Z$-boson decay, as well an additional isolated charged lepton. In data sample corresponding integrated luminosity $1.14\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, number observed events found...
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 in $pp$ collisions at $\sqrt{s}=7\text{ }\text{ }\mathrm{TeV}$, with a data sample corresponding to an integrated luminosity of $1.14\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, collected by CMS experiment LHC. In both cases, number events observed after all...
An inclusive search for same-sign top-quark pair production in pp collisions at $ \sqrt {s} = 7 TeV is performed using a data sample recorded with the CMS detector 2010, corresponding to an integrated luminosity of 35 pb−1. This analysis motivated by recent studies \text{p}\bar{\text{p}} \to \text{t}\bar{\text{t}} reporting mass-dependent forward-backward asymmetries larger than expected from standard model. These could be due Flavor Changing Neutral Currents (FCNC) top sector induced...
A search for three-jet hadronic resonance production in pp collisions at a center-of-mass energy of 7 TeV has been conducted by the CMS Collaboration LHC, using data sample corresponding to an integrated luminosity 35 pb(-1). Events with high jet multiplicity and large scalar sum transverse momenta are analyzed signature-based approach. The number expected standard model background events is found be good agreement observed events. Limits on cross section times branching ratio set gluino...
The Drell-Yan differential cross section is measured in pp collisions at $ \sqrt {s} = 7 TeV, from a data sample collected with the CMS detector LHC, corresponding to an integrated luminosity of 36 pb−1. measurement, normalized Z region, reported for both dimuon and dielectron channels dilepton invariant mass range 15–600 GeV. values are quoted full phase space within acceptance. effect final state radiation also identified. results found agree theoretical predictions.
A study of forward energy flow and central charged-particle multiplicity in events with W Z bosons decaying into leptons is presented. The analysis uses a sample 7 TeV pp collisions, corresponding to an integrated luminosity 36 pb−1, recorded by the CMS experiment at LHC. observed depositions, their correlations, multiplicities are not well described available non-diffractive soft-hadron production models. about 300 no significant deposited one calorimeters, pseudorapidity gap least 1.9...
The H1 and ZEUS collaborations at HERA have searched for signatures of physics beyond the Standard Model using high Q^2 neutral current deep inelastic electron-proton positron-proton scattering events. No significant deviations from predictions were observed. Various eeqq contact interaction models been considered. Limits on compositeness scale in general models, mass to Yukawa coupling ratio heavy leptoquarks, effective Planck with large extra dimensions quark charge radius are presented.
The ZEUS measurements of charged current deep inelastic scattering cross sections in e + p collisions with a longitudinally polarised positron beam are presented.The data sample used has an integrated luminosity 132 pb -1 at centre-of-mass energy 318 GeV.The total section is presented positive and negative values the longitudinal polarisation beams.The single-differential cross-sections dσ /dQ 2 , /dx /dy have been measured for Q > 200 GeV but not here.The reduced cross-section σ kinematic...