Measurement of P-T-weighted Sivers asymmetries in leptoproduction of hadrons

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F19%3A00508852" target="_blank" >RIV/68081731:_____/19:00508852 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/19:00327665 RIV/68407700:21340/19:00327665 RIV/00216208:11320/19:10396889 RIV/46747885:24510/20:00007426

Výsledek na webu

<a href="https://reader.elsevier.com/reader/sd/pii/S055032131830364X?token=F910543B9BE642E0FDCAB02A1EF3E52EEB560E4D393B7D059E559C9B38C35FCDB0D18FD1DE6EF5D19832151B0CF69A41" target="_blank" >https://reader.elsevier.com/reader/sd/pii/S055032131830364X?token=F910543B9BE642E0FDCAB02A1EF3E52EEB560E4D393B7D059E559C9B38C35FCDB0D18FD1DE6EF5D19832151B0CF69A41</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nuclphysb.2018.12.024" target="_blank" >10.1016/j.nuclphysb.2018.12.024</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of P-T-weighted Sivers asymmetries in leptoproduction of hadrons

Popis výsledku v původním jazyce

The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum P-T, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers asymmetries provide direct information on the Sivers function, which is a leading-twist distribution that arises from a correlation between the transverse momentum of an unpolarised quark in a transversely polarised nucleon and the spin of the nucleon. Using the high-statistics data collected by the COMPASS Collaboration in 2010 with a transversely polarised proton target, we have evaluated two types of P-T-weighted Sivers asymmetries, which are both proportional to the product of the first transverse moment of the Sivers function and of the fragmentation function. The results are compared to the standard unweighted Sivers asymmetries and used to extract the first transverse moments of the Sivers distributions for u and d quarks.

Název v anglickém jazyce

Measurement of P-T-weighted Sivers asymmetries in leptoproduction of hadrons

Popis výsledku anglicky

The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum P-T, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers asymmetries provide direct information on the Sivers function, which is a leading-twist distribution that arises from a correlation between the transverse momentum of an unpolarised quark in a transversely polarised nucleon and the spin of the nucleon. Using the high-statistics data collected by the COMPASS Collaboration in 2010 with a transversely polarised proton target, we have evaluated two types of P-T-weighted Sivers asymmetries, which are both proportional to the product of the first transverse moment of the Sivers function and of the fragmentation function. The results are compared to the standard unweighted Sivers asymmetries and used to extract the first transverse moments of the Sivers distributions for u and d quarks.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10304 - Nuclear physics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Nuclear Physics. B

ISSN

0550-3213

e-ISSN

—

Svazek periodika

940

Číslo periodika v rámci svazku

MAR

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

34-53

Kód UT WoS článku

000460126500003

EID výsledku v databázi Scopus

2-s2.0-85060236648