Results 71 to 80 of about 85,529 (240)

Interplay among transversity induced asymmetries in hadron leptoproduction [PDF]

open access: yes, 2004
In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect.
Compass Collaboration   +209 more
core   +5 more sources

Factorization at higher twist in hadron-hadron scattering

open access: yesNuclear Physics B, 1984
Abstract We study one-loop soft gluon effects in a scalar quark QCD model of the Drell-Yan process. We find that factorization of the type suggested by Politzer holds at order m 2 / s , but fails at order m 4 / s 2 . We suggest that this pattern holds to higher orders, and that the non-factoring terms are not suppressed by form factors.
George Sterman   +2 more
openaire   +2 more sources

Experimental validation of Geant4 nuclear interaction models in dose calculations of therapeutic carbon ion beams

open access: yesMedical Physics, Volume 52, Issue 7, July 2025.
Abstract Background The choice of nuclear interaction models in Monte Carlo simulations affects the dose calculation accuracy for light ion beam therapy. Purpose This study aimed to evaluate the dose calculation accuracy and simulation time of three GATE‐RTiON/Geant4 physics lists for therapeutic carbon ion beams, assessing their suitability for ...
Yihan Jia   +6 more
wiley   +1 more source

GLUON BREMSTRAHLUNG EFFECTS IN LARGE p HADRON-HADRON SCATTERING [PDF]

open access: yesAIP Conference Proceedings, 1982
We consider effects of parton (primarily gluon) bremstrahlung in the initial and final states of high transverse momentum hadron‐hadron scattering. Monte Carlo calculations based on conventional QCD parton branching and scattering processes are presented. The calculations are carried only to the parton level in the final state.
G. C. Fox, R. L. Kelly
openaire   +4 more sources

Field output correction factors using a scintillation detector

open access: yesMedical Physics, Volume 52, Issue 6, Page 4844-4861, June 2025.
Abstract Background As small radiation fields play an ever‐increasing role in radiation therapy, accurate dosimetry of these fields becomes critical to ensure high quality dose calculation and treatment optimization. Despite the availability of several small volume dose detectors, small field dosimetry remains challenging.
Luc Gingras   +10 more
wiley   +1 more source

Search for dark matter in events with missing transverse momentum and a Higgs boson decaying into two photons in pp collisions at s $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2021
A search for dark-matter particles in events with large missing transverse momentum and a Higgs boson candidate decaying into two photons is reported. The search uses 139 fb −1 of proton-proton collision data collected at s $$ \sqrt{s} $$ = 13 TeV with ...
The ATLAS collaboration   +2845 more
doaj   +1 more source

An Updated Description of Heavy-Hadron Interactions in Geant-4 [PDF]

open access: yes, 2009
Exotic stable massive particles (SMP) are proposed in a number of scenarios of physics beyond the Standard Model. It is important that LHC experiments are able both to detect and extract the quantum numbers of any SMP with masses around the TeV scale. To
A. Arvanitaki   +37 more
core   +2 more sources

Search for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in s $$ \sqrt{s} $$ = 13 TeV pp collisions with the ATLAS detector

open access: yesJournal of High Energy Physics, 2023
A search for the electroweak production of pairs of charged sleptons or charginos decaying into two-lepton final states with missing transverse momentum is presented.
The ATLAS collaboration   +2898 more
doaj   +1 more source

Assessing proton plans with three different beam delivery systems versus photon plans for head and neck tumors

open access: yesJournal of Applied Clinical Medical Physics, Volume 26, Issue 5, May 2025.
Abstract Purpose To compare plan quality among photon volumetric modulated arc therapy (VMAT) and intensity‐modulated proton therapy (IMPT) with robustness using three different proton beam delivery systems with various spot size (σ) ranges: cyclotron‐generated proton beams (CPBs) (σ: 2.7–7.0 mm), linear accelerator proton beams (LPBs) (σ: 2.9–5.5 mm),
Tara Gray   +9 more
wiley   +1 more source

Measurement of t-channel production of single top quarks and antiquarks in pp collisions at 13 TeV using the full ATLAS Run 2 data sample

open access: yesJournal of High Energy Physics
The production of single top quarks and top antiquarks via the t-channel exchange of a virtual W boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the LHC using 140 fb −1 of ATLAS data.
The ATLAS collaboration   +2929 more
doaj   +1 more source

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