Results 81 to 90 of about 1,977 (183)

New developments in lattice QCD: Calculation of flavor singlet nucleon matrix elements and hadron scattering lengths [PDF]

open access: yes, 1996
Recent developments in lattice QCD calculation of flavor singlet nucleon matrix elements are reviewed. Substantial sea quark contributions are found in the π-N σ term and the quark spin content of the nucleon such that the total magnitude including ...
Okawa, Masanori
core   +1 more source

The exotic hadron states in quenched and unquenched quark models

open access: yes, 2021
In the last two decades, a large number of exotic hadron states have been observed in experiments, which arouses great attention in the hadron physics community.
Y. Tan, X. Jin, J. L. Ping, H. X. Huang
core   +1 more source

Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2018
A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV recorded by the ATLAS detector at the Large
The ATLAS collaboration   +2923 more
doaj   +1 more source

Electron beam monitoring of a modified conventional medical accelerator with a portable current transformer system traceable to primary electrical standards

open access: yesMedical Physics, Volume 52, Issue 4, Page 2581-2592, April 2025.
Abstract Background Ultra‐high dose rate radiotherapy (UHDR) delivers therapeutic doses at rates >40 Gy/s in a fraction of a second, aiming to enhance the therapeutic ratio through the FLASH effect. The substantial increase in UHDR beam current poses serious challenges for conventional active dosimeters.
James Renaud   +3 more
wiley   +1 more source

Ferrites with a Minimized Secondary Electron Yield

open access: yesAdvanced Science, Volume 12, Issue 10, March 13, 2025.
Ferrites are a key material in particle accelerators and space science, exposing them to high energy electrons and leading to multipacting, charging and electron cloud formation. Laser engineered surface structures are shown to dramatically reduce the secondary electron yield of ferrite eliminating these issues.
Robin Uren   +10 more
wiley   +1 more source

Search for heavy Majorana or Dirac neutrinos and right-handed W gauge bosons in final states with two charged leptons and two jets at s = 13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2019
A search for heavy right-handed Majorana or Dirac neutrinos N R and heavy right-handed gauge bosons W R is performed in events with a pair of energetic electrons or muons, with the same or opposite electric charge, and two energetic jets.
The ATLAS collaboration   +2924 more
doaj   +1 more source

High resolution 7-spectroscopy at the Big-Bite Spectrometer

open access: yes, 2006
An array of HPGe detectors has been set up at the Big-Bite Spectrometer at AGOR cyclotron of KVI Groningen to allow coincident measurements of the gamma-decay of nuclei excited in inelastic hadron scattering at 100-400 MeV incident energies.
Harakeh, M. N.   +10 more
core   +1 more source

Measurement of ZZ production in the ℓℓνν final state with the ATLAS detector in pp collisions at s $$ \sqrt{s} $$ = 13 TeV

open access: yesJournal of High Energy Physics, 2019
This paper presents a measurement of ZZ production with the ATLAS detector at the Large Hadron Collider. The measurement is carried out in the final state with two charged leptons and two neutrinos, using data collected during 2015 and 2016 in pp ...
The ATLAS collaboration   +2937 more
doaj   +1 more source

Static and dynamic properties of the pion from continuum modelling of strong QCD [PDF]

open access: yes, 2010
We present nonperturbative numerical solutions for the quark propagator Schwinger-Dyson equation (SDE) and pseudoscalar meson Bethe-Salpeter equation (BSE) at and beyond the rainbow-ladder truncation level of this system of equations.
Cobos-Martinez, Jesus Javier   +1 more
core  

Implications of LHCb measurements and future prospects [PDF]

open access: yes, 2012
During 2011 the LHCb experiment at CERN collected 1.0 fb−1 of s√=7~TeV pp collisions. Due to the large heavy quark production cross-sections, these data provide unprecedented samples of heavy flavoured hadrons.
Hennessy K.   +999 more
core   +1 more source

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