Azimuthal Asymmetries in Unpolarised Semi-Inclusive DIS at COMPASS

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10469031" target="_blank" >RIV/00216208:11320/22:10469031 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.7566/JPSCP.37.020104" target="_blank" >https://doi.org/10.7566/JPSCP.37.020104</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.7566/JPSCP.37.020104" target="_blank" >10.7566/JPSCP.37.020104</a>

Result language
angličtina
Original language name
Azimuthal Asymmetries in Unpolarised Semi-Inclusive DIS at COMPASS
Original language description
In semi-inclusive deep inelastic scattering (SIDIS) the non-zero transverse momentum of partons induces azimuthal dependence of the cross-section. For an unpolarised nucleon, three azimuthal modulations that can be related to different combinations of twist-two or higher-twist transverse momentum dependent PDFs and fragmentation functions arise: the so-called Cahn effect reflected in a cosφhcosφh modulation, the cos2φhcos2φh term related to the Boer-Mulders PDF and sinφhsinφh effect known as beam-spin asymmetry. In 2016 and 2017, the COMPASS experiment at CERN collected a large sample of SIDIS events using a longitudinally polarised 160 GeV/c muon beam scattering on a liquid hydrogen target. Amplitudes of the aforementioned azimuthal modulations have been extracted from part of the data. A new procedure has been developed to subtract a background coming from the decay of diffractively produced vector mesons. The results presented in this talk qualitatively agree with earlier COMPASS results obtained with an isoscalar target.
Czech name
—
Czech description
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 24th International Spin Symposium (SPIN2021)
ISBN
978-4-89027-150-4
ISSN
2435-3892
e-ISSN
—
Number of pages
4
Pages from-to
—
Publisher name
Physical Society of Japan
Place of publication
Japonsko
Event location
Matsue, Japonsko
Event date
Oct 18, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—

Similar results(10)