A5107677778- 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
- Astrophysics and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Medical Imaging Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Radiation Therapy and Dosimetry
- Nuclear reactor physics and engineering
- Distributed and Parallel Computing Systems
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Molecular Physics
- Gamma-ray bursts and supernovae
- Radioactivity and Radon Measurements
Boğaziçi University
2016-2025
Institute of High Energy Physics
2015-2024
University of Antwerp
2024
A. Alikhanyan National Laboratory
2022-2024
Istanbul Technical University
1997-2023
University of Iowa
2006-2022
Joint Institute for Nuclear Research
2016
Cukurova University
2015
European Organization for Nuclear Research
2012-2014
University of California, San Diego
2014
We observe a signal for the doubly charmed baryon Xi(+)(cc) in charged decay mode Xi(+)(cc)-->Lambda(+)(c)K-pi(+) data from SELEX, charm hadroproduction experiment at Fermilab. an excess of 15.9 events over expected background 6.1+/-0.5 events, statistical significance 6.3sigma. The observed mass this state is 3519+/-1 MeV/c(2). Gaussian width 3 MeV/c(2), consistent with resolution; its lifetime less than 33 fs 90% confidence.
Background: A limited number of studies suggest a higher prevalence periodontal disease among individuals with rheumatoid arthritis (RA); however, results have been inconsistent. Further, it is unclear to what extent poor oral hygiene patients RA may account for this association. Methods: The association between and periodontitis was examined in 57 subjects 52 healthy controls, matched by age gender. Oral examination included plaque index (PI), gingival (GI), probing depth (PD), clinical...
We have measured the spin-dependent structure function g1p in inclusive deep-inelastic scattering of polarized muons off protons, kinematic range 0.003<x<0.7 and 1GeV2<Q2<60GeV2. A next-to-leading order QCD analysis is used to evolve g1p(x,Q2) a fixed Q02. The first moment at Q02=10GeV2 Γ1p=0.136±0.013 (stat) ±0.009 (syst) ±0.005 (evol). This result below prediction Ellis-Jaffe sum rule by more than two standard deviations. singlet axial charge a0 found be 0.28±0.16. In Adler-Bardeen...
During 2010 the LHC delivered pp collisions with a centre-of-mass energy of 7 TeV. In this paper, results comprehensive studies missing transverse as measured by CMS detector are presented. The cover measurements scale and resolution for energy, effects multiple interactions within same bunch crossings on resolution. Anomalous studied, algorithms their identification described. performance several reconstruction calculating compared. An algorithm, called missing-transverse-energy...
We present a new measurement of the spin-dependent structure function g1d deuteron in deep inelastic scattering 190 GeV polarised muons on deuterons, kinematic range 0.003 < x 0.7 and 1 GeV2 Q2 60 GeV2. This is found to be negative at small x. The first moment Γ1d=∫01g1ddx evaluated Q02 = 10 0.034 ± 0.009 (stat.) 0.006 (syst.). value below Ellis-Jaffe sum rule prediction by three standard deviations. Using our earlier determination Γ1p, we obtain Γ1p − Γ1n 0.199 0.038 which agrees with Bjorken rule.
We measured the spin asymmetry in scattering of 100 GeV longitudinally-polarized muons on transversely polarized protons. The was found to be compatible with zero kinematic range 0.006 < x 0.6, 1 Q2 30GeV2. From this result we derive upper limits for virtual photon-proton A2, and structure function g2. For 0.15, A2 is significantly smaller than its positivity limit √R.
We report the first observation of a charm-strange meson D(+)(sJ)(2632) at mass 2632.5+/-1.7 MeV/c(2) in data from SELEX, charm hadro-production experiment E781 Fermilab. This state is seen two decay modes, D(+)(s)eta and D0K+. In mode we observe peak with 101 events over combinatoric background 54.9 2635.4+/-3.3 MeV/c(2). There corresponding 21 6.9 2631.5+/-2.0 The width this <17 90% confidence level. relative branching ratio Gamma(D0K+)/Gamma(D(+)(s)eta) 0.14+/-0.06. mechanism that keeps...
We report on the test beam results and calibration methods using high energy electrons, pions muons with CMS forward calorimeter (HF). The HF covers a large pseudorapidity region ( $3\leq|\eta|\leq5$ ), is essential for number of physics channels missing transverse energy. It also expected to play prominent role in measurement tagging jets weak boson fusion Higgs production. based steel absorber embedded fused-silica-core optical fibers where Cherenkov radiation forms basis signal...
The CMS-HF Calorimeter is designed to detect forward going particles. Discovery type events are believed produce high energy particles at angles. Hence, it important determine the particle energies accurately by making sure that detectors have right calibration all time. calorimeters quartz fibers as active element. Particle showers caused travelling through calorimeter Cherenkov light in fibers. determined from signals produced PMTs reaching them. Damage radiation during collisions...
Future collider experiments and the upgrade of existing large-scale impose unprece-dented radiation conditions for calorimeter systems, particularly in forward region. The calorimeters envisaged these operating must be sufficiently radiation-hard robust order to perform as expected entire lifetime experiments. In this context, a novel design utilizing quartz-Cherenkov calorimetry, termed Q-Wall has been developed. concept is sampling that alternates between plates absorber (Fe, Pb, W, etc.)...
A complete set of polarization-transfer observables has been measured for quasifree (p\ensuremath{\rightarrow},n\ensuremath{\rightarrow}) reactions on $^{2}\mathrm{H}$, $^{12}\mathrm{C}$, and $^{40}\mathrm{Ca}$ at a bombarding energy 495 MeV laboratory scattering angle 18\ifmmode^\circ\else\textdegree\fi{}. The data span an energy-loss range from 0 to 160 MeV, with corresponding momentum transfer ${\mathit{q}}_{\mathrm{c}.\mathrm{m}.}$=1.7--1.9 ${\mathrm{fm}}^{\mathrm{\ensuremath{-}}1}$. are...
Differential-cross-section distributions for the $^{7}\mathrm{Li}$(p,n${)}^{7}$Be(g.s.+0.43-MeV) reaction have been measured ${\mathit{E}}_{\mathit{p}}$=80, 120, 160, 200, 494, 644, and 795 MeV. These integrated normalized to independent values total cross section obtained from parametrizations of $^{7}\mathrm{Li}$(p,n) activation measurements. Zero-degree sections this normalization are reported.
Results from a complete set of polarization-transfer observables for quasifree (p\ensuremath{\rightarrow},n\ensuremath{\rightarrow}) scattering at 495 MeV are reported. Measurements were carried out on ${\mathrm{CD}}_{2}$, carbon, and calcium targets laboratory angle 18\ifmmode^\circ\else\textdegree\fi{} using the new neutron time-of-flight facility LAMPF. The ratio spin-longitudinal to spin-transverse responses momentum transfer approximately 1.72 ${\mathrm{fm}}^{\mathrm{\ensuremath{-}}1}$...
Extensive measurements have been made with pions, electrons and muons on four production wedges of the compact muon solenoid (CMS) hadron barrel (HB) calorimeter in H2 beam line at CERN particle momenta varying from 20 to 300 GeV/c. The time structure events was measured full chain preproduction front-end electronics running 34 MHz. Moving-wire radioactive source data were also collected for all scintillator layers HB. energy dependent slewing effect tuned optimal performance.
Objective: Ankylosing spondylitis (AS) and periodontal disease (PD) are characterised by dysregulation of the host inflammatory response, resulting in soft hard connective tissue destruction. AS has been related to other diseases, however, there is a paucity data on whether associated with PD. Methods: The association between PD was examined 48 patients healthy controls, matched for age gender. diagnosed according modified New York criteria. Periodontal examination included probing pocket...
The fixed-target MIPP experiment, Fermilab E907, was designed to measure the production of hadrons from collisions momenta ranging 5 120 GeV/c on a variety nuclei. These data will generally improve simulation particle detectors and predictions beam fluxes at accelerators. spectrometer momentum resolution is between 3 4%, identification performed for particles 0.3 80 using $dE/dx$, time-of-flight Cherenkov radiation measurements. collected $1.42 \times10^6$ events GeV Main Injector protons...