publication . Article . Other literature type . Preprint . 2016

Exclusive $\omega$ meson muoproduction on transversely polarised protons

E. M. Kabuß; P. Zavada; C.D.R. Azevedo; S. Dalla Torre; W. Eyrich; M. Quaresma; G. Sbrizzai; F. Bradamante; T. Sawada; N. Horikawa; ...
Open Access English
  • Published: 12 Jun 2016
  • Publisher: HAL CCSD
Abstract
Exclusive production of $\omega$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and transverse momentum squared of the $\omega$ meson $0.05~(\mathrm{GeV}/\mathit{c})^2 < p_{T}^{2} < 0.5~(\mathrm{GeV}/\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity-flip Generalised Parton Distributions (GPD) $E$ that are related to t...
Subjects
arXiv: High Energy Physics::ExperimentStatistics::Theory
free text keywords: 160 GeV/c, experimental results, momentum transfer, photon, COMPASS, nucleon: helicity, transversity, omega(783): transverse momentum, scaling: Bjorken, spin: asymmetry, generalized parton distribution, form factor: transition, omega(783): exclusive production, omega(783): leptoproduction, quark: angular momentum, angular distribution: asymmetry, parton: distribution function, polarized target: transverse, muon+ p: scattering, muon nucleus: nuclear reaction, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798, Nuclear and High Energy Physics, asymmetry [angular distribution], transition [form factor], nuclear reaction [muon nucleus], scattering [muon+ p], helicity [nucleon], exclusive production [omega(783)], leptoproduction [omega(783)], transverse momentum [omega(783)], distribution function [parton], transverse [polarized target], angular momentum [quark], Bjorken [scaling], asymmetry [spin], 530, High Energy Physics - Experiment, Nuclear Experiment, nucl-ex, Nuclear Physics - Experiment, hep-ex, Particle Physics - Experiment, Parton, Meson, Quark, Physics, Angular momentum, Muon, Nucleon, Nuclear physics, Form factor (quantum field theory), Particle physics, ddc:530
Funded by
EC| HADRONPHYSICS3
Project
HADRONPHYSICS3
Study of Strongly Interacting Matter
  • Funder: European Commission (EC)
  • Project Code: 283286
  • Funding stream: FP7 | SP4 | INFRA
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