First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F17%3A00479874" target="_blank" >RIV/68081731:_____/17:00479874 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21230/17:00313395 RIV/68407700:21340/17:00313395 RIV/46747885:24510/17:00005275 RIV/00216208:11320/17:10369646
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevLett.119.112002" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.119.112002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.119.112002" target="_blank" >10.1103/PhysRevLett.119.112002</a>
Alternative languages
Result language
angličtina
Original language name
First Measurement of Transverse-Spin-Dependent Azimuthal Asymmetries in the Drell-Yan Process
Original language description
The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/c pi(-) beam and a transversely polarized ammonia target. Three azimuthal asymmetries giving access to different transverse-momentum-dependent (TMD) parton distribution functions (PDFs) are extracted using dimuon events with invariant mass between 4.3 GeV/c(2) and 8.5 GeV/c(2). Within the experimental uncertainties, the observed sign of the Sivers asymmetry is found to be consistent with the fundamental prediction of quantum chromodynamics (QCD) that the Sivers TMD PDFs extracted from DY have a sign opposite to the one extracted from semi-inclusive deep-inelastic scattering (SIDIS) data. We present two other asymmetries originating from the pion Boer-Mulders TMD PDFs convoluted with either the nucleon transversity or pretzelosity TMD PDFs. A recent COMPASS SIDIS measurement was obtained at a hard scale comparable to that of these DY results. This opens the way for possible tests of fundamental QCD universality predictions.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
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Volume of the periodical
119
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
1-7
UT code for WoS article
000410458800005
EID of the result in the Scopus database
2-s2.0-85029894322