Measurements of W and Z/gamma* cross sections and their ratios in p plus p collisions at RHIC

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00539473" target="_blank" >RIV/61389005:_____/21:00539473 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/21:00351038

Výsledek na webu

<a href="https://doi.org/10.1103/PhysRevD.103.012001" target="_blank" >https://doi.org/10.1103/PhysRevD.103.012001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.103.012001" target="_blank" >10.1103/PhysRevD.103.012001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurements of W and Z/gamma* cross sections and their ratios in p plus p collisions at RHIC

Popis výsledku v původním jazyce

We report on the W and Z/gamma* differential and total cross sections as well as the W+/W- and (W+ + W-)/(Z/gamma*) cross section ratios measured by the STAR experiment at RHIC in p+p collisions at root s = 500 GeV and 510 GeV. The cross sections and their ratios are sensitive to quark and antiquark parton distribution functions. In particular, at leading order, the W cross section ratio is sensitive to the (d) over bar/(u) over bar ratio. These measurements were taken at high Q(2) similar to M-W(2), M-Z(2) and can serve as input into global analyses to provide constraints on the sea quark distributions. The results presented here combine three STAR datasets from 2011, 2012, and 2013, accumulating an integrated luminosity of 350 pb(-1). We also assess the expected impact that our W+/W- cross section ratios will have on various quark distributions, and find sensitivity to the (u) over bar - (d) over bar and (d) over bar/(u) over bar, distributions.

Název v anglickém jazyce

Measurements of W and Z/gamma* cross sections and their ratios in p plus p collisions at RHIC

Popis výsledku anglicky

We report on the W and Z/gamma* differential and total cross sections as well as the W+/W- and (W+ + W-)/(Z/gamma*) cross section ratios measured by the STAR experiment at RHIC in p+p collisions at root s = 500 GeV and 510 GeV. The cross sections and their ratios are sensitive to quark and antiquark parton distribution functions. In particular, at leading order, the W cross section ratio is sensitive to the (d) over bar/(u) over bar ratio. These measurements were taken at high Q(2) similar to M-W(2), M-Z(2) and can serve as input into global analyses to provide constraints on the sea quark distributions. The results presented here combine three STAR datasets from 2011, 2012, and 2013, accumulating an integrated luminosity of 350 pb(-1). We also assess the expected impact that our W+/W- cross section ratios will have on various quark distributions, and find sensitivity to the (u) over bar - (d) over bar and (d) over bar/(u) over bar, distributions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field 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

2021

Kód důvěrnosti údajů

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

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

103

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

012001

Kód UT WoS článku

000604538000001

EID výsledku v databázi Scopus

2-s2.0-85099295108