S. Camarda
A5025518930- 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
- Computational Physics and Python Applications
- Cosmology and Gravitation Theories
- Neutrino Physics Research
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Advanced Data Storage Technologies
- Nuclear Physics and Applications
- Big Data Technologies and Applications
- Scientific Computing and Data Management
- Nuclear reactor physics and engineering
- Structural Analysis of Composite Materials
- Digital Radiography and Breast Imaging
- International Science and Diplomacy
- Diverse Scientific and Economic Studies
European Organization for Nuclear Research
2016-2025
Institute for High Energy Physics
2014-2024
University of Geneva
2023-2024
University of Manchester
2023-2024
Institute of Science and Technology
2023-2024
Atlas Scientific (United States)
2024
SR Research (Canada)
2024
Federación Española de Enfermedades Raras
2024
A. Alikhanyan National Laboratory
2024
Institute of High Energy Physics
2024
The mass of the W boson, a mediator weak force between elementary particles, is tightly constrained by symmetries standard model particle physics. Higgs boson was last missing component model. After observation measurement provides stringent test We measure mass, MW, using data corresponding to 8.8 inverse femtobarns integrated luminosity collected in proton-antiproton collisions at 1.96 tera-electron volt center-of-mass energy with CDF II detector Fermilab Tevatron collider. A sample...
We present a new measurement of the inclusive forward-backward $t\overline{t}$ production asymmetry and its rapidity mass dependence. The measurements are performed with data corresponding to an integrated luminosity $5.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$, recorded CDF-II Detector Fermilab Tevatron. Significant asymmetries observed in both laboratory frame rest frame, cases found be consistent $CP$ conservation...
HERAFitter is an open-source package that provides a framework for the determination of parton distribution functions (PDFs) proton and many different kinds analyses in Quantum Chromodynamics (QCD). It encodes results from wide range experimental measurements lepton–proton deep inelastic scattering proton–proton (proton–antiproton) collisions at hadron colliders. These are complemented with variety theoretical options calculating PDF-dependent cross section predictions corresponding to...
The Large Hadron electron Collider (LHeC) is designed to move the field of deep inelastic scattering (DIS) energy and intensity frontier particle physics. Exploiting recovery technology, it collides a novel, intense beam with proton or ion from High Luminosity--Large (HL-LHC). accelerator interaction region are for concurrent electron-proton proton-proton operation. This report represents an update Conceptual Design Report (CDR) LHeC, published in 2012. It comprises new results on parton...
We present new measurements of the inclusive forward-backward ttbar production asymmetry, AFB, and its dependence on several properties system. The are performed with full Tevatron data set recorded CDF II detector during ppbar collisions at sqrt(s) = 1.96 TeV, corresponding to an integrated luminosity 9.4 fb^(-1). measure asymmetry using rapidity difference Delta-y=y_(t)-y_(tbar). Parton-level results derived, yielding 0.164+/-0.047 (stat + syst). observe a linear AFB top-quark pair mass...
We reconstruct the decays B -> K(*) mu+ mu- and measure their angular distributions in ppbar collisions at sqrt{s}=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb-1. The transverse polarization asymmetry AT(2) time-reversal-odd charge-and-parity Aim are measured for first time, together with K* longitudinal fraction FL muon forward-backward AFB, B0 K*0 B+ K*+ mu-. Our results among most accurate date consistent those from other experiments.
We report the first observation of baryonic flavor-changing neutral current decay Λ(b)(0)→Λμ(+)μ(-) with 24 signal events and a statistical significance 5.8 Gaussian standard deviations. This measurement uses pp collisions data sample corresponding to 6.8 fb(-1) at √s = 1.96 TeV collected by CDF II detector Tevatron collider. The total differential branching ratios for are measured. find B(Λ(b)(0)→Λμ(+)μ(-))=[1.73 ± 0.42(stat) (syst)] × 10(-6). also ratio B(s)(0)→ϕμ(+)μ(-), using 49 events....
We report a study of the invariant mass distribution jet pairs produced in association with W boson using data collected CDF detector which correspond to an integrated luminosity 4.3 fb(-1). The observed has excess 120-160 GeV/c(2) range is not described by current theoretical predictions within statistical and systematic uncertainties. In this Letter, we studies properties excess.
We have measured the $W$-boson mass ${M}_{W}$ using data corresponding to $2.2\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity collected in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\mathrm{TeV}$ with CDF II detector Fermilab Tevatron collider. Samples consisting 470 126 $W\ensuremath{\rightarrow}e\ensuremath{\nu}$ candidates and 624 708 $W\ensuremath{\rightarrow}\ensuremath{\mu}\ensuremath{\nu}$ yield measurement ${M}_{W}=80\text{...
The observation of the $Y(4140)$ structure in $B^\pm\rightarrow J/\psi\,\phi K^\pm$ decays produced $\bar{p} p $ collisions at $\sqrt{s}=1.96~\TeV$ is reported with a statistical significance greater than 5 standard deviations. A fit to $J/\psi\,\phi$ mass spectrum performed assuming presence Breit-Wigner resonance. yields signal $19^{+6}_{-5}$ resonance events, and width $4143.4^{+2.9}_{-3.0}(\mathrm{stat})\pm0.6(\mathrm{syst})~\MeVcc$...
Fits to the final combined HERA deep-inelastic scattering cross-section data within conventional DGLAP framework of QCD have shown some tension at low x and $$Q^2$$ . A resolution this incorporating $$\ln (1/x)$$ -resummation terms into HERAPDF fits is investigated using xFitter program. The kinematic region where resummation important delineated. Such high-energy not only gives a better description data, particularly longitudinal structure function $$F_L$$ , it also results in gluon PDF...
We present high-accuracy QCD predictions for the transverse-momentum ($q_T$) distribution and fiducial cross sections of Drell-Yan lepton pairs produced in hadronic collisions. At small value $q_T$ we resum to all perturbative orders logarithmically enhanced contributions up next-to-next-to-next-to-leading logarithmic (N$^3$LL) accuracy, including order (N$^3$LO) (i.e. $\mathcal{O}(\alpha_S^3)$) terms. Our resummed calculation has been implemented public numerical program DYTurbo, which...
Abstract Theoretical predictions for particle production cross sections and decays at colliders rely heavily on perturbative Quantum Chromodynamics (QCD) calculations, expressed as an expansion in powers of the strong coupling constant α S . The current <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mi class="MJX-tex-calligraphic" mathvariant="script">O</mml:mi> <mml:mo stretchy="false">(</mml:mo> <mml:mn>1</mml:mn> <mml:mo>%</mml:mo>...
We report the observation of electroweak single top quark production in $3.2\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ $p\overline{p}$ collision data collected by Collider Detector at Fermilab $\sqrt{s}=1.96\text{ }\mathrm{TeV}$. Candidate events $W+\mathrm{\text{jets}}$ topology with a leptonically decaying $W$ boson are classified as signal-like four parallel analyses based on likelihood functions, matrix elements, neural networks, and boosted decision trees. These results combined...
We report a measurement of the bottom-strange meson mixing phase β(s) using time evolution B(s)(0)→J/ψ(→μ(+)μ(-))φ(→K(+)K(-)) decays in which quark-flavor content is identified at production. This uses full data set proton-antiproton collisions √s=1.96 TeV collected by Collider Detector experiment Fermilab Tevatron, corresponding to 9.6 fb(-1) integrated luminosity. confidence regions two-dimensional space and B(s)(0) decay-width difference ΔΓ(s) measure...
We report on a measurement of $CP$-violating asymmetries (${A}_{CP}$) in the Cabibbo-suppressed ${D}^{0}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}$ decays reconstructed data sample corresponding to $5.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ integrated luminosity collected by upgraded Collider Detector at Fermilab. use strong decay...
We report a measurement of the difference (ΔA(CP)) between time-integrated CP-violating asymmetries in D(0)→K(+)K(-) and D(0)→π(+)π(-) decays reconstructed full data set proton-antiproton collisions collected by Collider Detector at Fermilab, corresponding to 9.7 fb(-1) integrated luminosity. The strong decay D(*+)→D(0)π(+) is used identify charm meson production as D(0) or D[over ¯](0). measure ΔA(CP)=[-0.62±0.21(stat)±0.10(syst)]%, which differs from zero 2.7 Gaussian standard deviations....
A search has been performed for B(s)(0) → μ+ μ- and B(0) decays using 7 fb(-1) of integrated luminosity collected by the CDF II detector at Fermilab Tevatron collider. The observed number candidates is consistent with background-only expectations yields an upper limit on branching fraction B(B(0) μ-) < 6.0 × 10(-9) 95% confidence level. We observe excess candidates. probability that background processes alone could produce such or larger 0.27%. combination expected standard model rate 1.9%....
We present the results of a search for dark matter production in monojet signature. analyze sample Tevatron $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ corresponding to an integrated luminosity $6.7\text{ }\mathrm{f}{\mathrm{b}}^{\ensuremath{-}1}$ recorded by CDF II detector. In events with large missing transverse energy and one energetic jet, we find good agreement between standard model prediction observed data. set 90% confidence level upper limits on rate....
The successful operation of the Large Hadron Collider (LHC) and excellent performance ATLAS, CMS, LHCb ALICE detectors in Run-1 Run-2 with $pp$ collisions at center-of-mass energies 7, 8 13 TeV as well giant leap precision calculations modeling fundamental interactions hadron colliders have allowed an extraordinary breadth physics studies including measurements a variety processes. LHC results so far confirmed validity Standard Model particle up to unprecedented energy scales great sectors...
Drell-Yan lepton pair production processes are extremely important for Standard Model (SM) precision tests and beyond the SM searches at hadron colliders. Fast accurate predictions essential to enable best use of measurements these processes; they used parton density fits, extraction fundamental parameters SM, estimation background in searches. This paper describes a new numerical program, DYTurbo, calculation QCD transverse-momentum resummation cross sections up next-to-next-to-leading...
We consider Drell–Yan lepton pairs produced in hadronic collisions. present high-accuracy QCD predictions for the transverse-momentum (qT) distribution and fiducial cross sections small qT region. resum to all perturbative orders logarithmically enhanced contributions up next-to-next-to-next-to-next-to-leading logarithmic (N4LL) accuracy we include hard-virtual coefficient at next-to-next-to-next-to-leading order (N3LO) (i.e. O(αS3)) with an approximation of N4LO coefficients. The massive...
We study the underlying event in proton-antiproton collisions by examining behavior of charged particles produced association with a large transverse momentum jet ($\ensuremath{\sim}2.2\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$) or Drell-Yan lepton pair ($\ensuremath{\sim}2.7\text{ $Z$-boson mass region [$70<M(\mathrm{\text{pair}})<110\text{ }\mathrm{GeV}/{c}^{2}$] as measured CDF at 1.96 TeV center-of-mass energy. use direction leading each to define regions...
We report the most restrictive direct limits on masses of fourth-generation down-type quarks b′, and quarklike composite fermions (B or T5/3), decaying promptly to tW∓. search for a significant excess events with two same-charge leptons (e, μ), several hadronic jets, missing transverse energy. An analysis data from p¯p collisions an integrated luminosity 2.7 fb−1 collected CDF II detector at Fermilab yields no evidence such signal, setting mass mb′, mB>338 GeV/c2 mT5/3>365 95% confidence...