I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129002" target="_blank" >RIV/00216208:11320/12:10129002 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081731:_____/12:00390816 RIV/46747885:24510/12:#0000891 RIV/46747885:24220/12:#0002486

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physletb.2012.09.055" target="_blank" >http://dx.doi.org/10.1016/j.physletb.2012.09.055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2012.09.055" target="_blank" >10.1016/j.physletb.2012.09.055</a>

Jazyk výsledku

angličtina

Název v původním jazyce

I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

Popis výsledku v původním jazyce

The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV mu(+) beam and a transversely polarised NH3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003 < x < 0.7. These new precise measurements confirm previous measurements from the COMPASS and HERMES Collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken x, the relative hadron energy z and the hadron transverse momentum p(T)(h). The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinemati

Název v anglickém jazyce

I - Experimental investigation of transverse spin asymmetries in mu-p SIDIS processes: Collins asymmetries

Popis výsledku anglicky

The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV mu(+) beam and a transversely polarised NH3 target. The Collins asymmetry of the proton was extracted in the Bjorken x range 0.003 < x < 0.7. These new precise measurements confirm previous measurements from the COMPASS and HERMES Collaborations, which exhibit a definite effect in the valence quark region. The asymmetries for negative and positive hadrons are similar in magnitude and opposite in sign. They are compatible with model calculations in which the u-quark transversity is opposite in sign and somewhat larger than the d-quark transversity distribution function. The asymmetry is extracted as a function of Bjorken x, the relative hadron energy z and the hadron transverse momentum p(T)(h). The high statistics and quality of the data also allow for more detailed investigations of the dependence on the kinemati

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BF - Elementární částice a fyzika vysokých energií

OECD FORD obor

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Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ISSN

0370-2693

e-ISSN

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Svazek periodika

717

Číslo periodika v rámci svazku

4-5

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

376-382

Kód UT WoS článku

000310863300011

EID výsledku v databázi Scopus

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