Results 11 to 20 of about 416,324 (112)
Lorentz and CPT violation in partons
Journal of High Energy Physics, 2020 A framework is presented for the factorization of high-energy hadronic processes in the presence of Lorentz and CPT violation. The comprehensive effective field theory describing Lorentz and CPT violation, the Standard-Model Extension, is used to ...
V. Alan Kostelecký +3 more
doaj +1 more source
Journal of High Energy Physics, 2020 We consider semi-inclusive deep inelastic scattering (SIDIS) and Drell-Yan events within transverse momentum dependent (TMD) factorization. Based on the simultaneous fit of multiple data points, we extract the unpolarized TMD distributions and the non ...
Ignazio Scimemi, Alexey Vladimirov
doaj +1 more source
nNNPDF2.0: quark flavor separation in nuclei from LHC data
Journal of High Energy Physics, 2020 We present a model-independent determination of the nuclear parton distribution functions (nPDFs) using machine learning methods and Monte Carlo techniques based on the NNPDF framework.
Rabah Abdul Khalek +3 more
doaj +1 more source
Unitarisation dependence of diffractive scattering in light of high-energy collider data
Journal of High Energy Physics, 2021 We study the consequences of high-energy collider data on the best fits to total, elastic, inelastic, and single-diffractive cross sections for pp and p p ¯ $$ p\overline{p} $$ scattering using different unitarisation schemes.
Arno Vanthieghem +3 more
doaj +1 more source
J/ψ meson production in SIDIS: matching high and low transverse momentum
Journal of High Energy Physics, 2020 We consider the transverse momentum spectrum and the cos 2ϕ azimuthal distribution of J/ψ mesons produced in semi-inclusive, deep-inelastic electron-proton scattering, where the electron and the proton are unpolarized.
Daniël Boer +4 more
doaj +1 more source
Quarkonium TMD fragmentation functions in NRQCD
Journal of High Energy Physics, 2020 We study the transverse-momentum spectrum of quarkonium production from single light-parton fragmentation mechanism. In the case of semi-inclusive deep inelastic scattering, we observe that there are two possible initiating processes, namely photon-gluon
Miguel G. Echevarria +2 more
doaj +1 more source
The Effective Vector Boson Approximation in high-energy muon collisions
Journal of High Energy Physics, 2022 Due to the inclination for forward gauge radiation, lepton colliders beyond a few TeV are effectively electroweak (EW) boson colliders, suggesting the treatment of EW bosons as constituents of high-energy leptons.
Richard Ruiz +3 more
doaj +1 more source
Joint thrust and TMD resummation in electron-positron and electron-proton collisions
Journal of High Energy Physics, 2021 We present the framework for obtaining precise predictions for the transverse momentum of hadrons with respect to the thrust axis in e + e − collisions. This will enable a precise extraction of transverse momentum dependent (TMD) fragmentation functions ...
Yiannis Makris +2 more
doaj +1 more source
Limits on electroweak instanton-induced processes with multiple boson production
Journal of High Energy Physics, 2018 Recently, the CMS collaboration has reported their search for electroweak instanton-like processes with anomalous B + L violation assuming multi-fermion but zero-boson final states. On the other hand, many theoretical studies suggest that anomalous B + L
Andreas Ringwald +2 more
doaj +1 more source
Neutrino telescopes as QCD microscopes
Journal of High Energy Physics, 2019 We present state-of-the-art predictions for the ultra-high energy (UHE) neutrino-nucleus cross-sections in charged- and neutral-current scattering. The calculation is performed in the framework of collinear factorisation at NNLO, extended to include the ...
Valerio Bertone, Rhorry Gauld, Juan Rojo
doaj +1 more source