Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at root s=13 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10424060" target="_blank" >RIV/00216208:11320/20:10424060 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V1.r6LqTIF" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=V1.r6LqTIF</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.102.032007" target="_blank" >10.1103/PhysRevD.102.032007</a>

Result language

angličtina

Original language name

Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at root s=13 TeV

Original language description

Ratios of cross sections, sigma(Z + c jets)/sigma(Z + jets), sigma(Z + b jets)/sigma(Z + jets), and sigma(Z + c jets)/sigma(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in proton-proton collisions at root s = 13 TeV. The data sample, collected by the CMS experiment at the CERN LHC, corresponds to an integrated luminosity of 35.9 fb(-1), with a fiducial volume of p(T) &gt; 30 GeV and vertical bar eta vertical bar &lt; 2.4 for the jets, where p(T) and eta represent transverse momentum and pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or muons with p(r) &gt; 25 GeV and vertical bar eta vertical bar &lt; 2.4, and the dilepton mass satisfies 71 &lt; m(z) &lt; 111 GeV. The measured values are sigma(Z + c jets)/sigma(Z + jets) = 0.102 +/- 0.002 +/- 0.009, sigma(Z + b jets)/6(Z + jets) = 0.0633 +/- 0.0004 +/- 0.0015, and sigma(Z + c jets)/sigma(Z + b jets) = 1.62 +/- 0.03 +/- 0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics calculations. These arc the first measurements of the cross section ratios at 13 TeV.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>

Continuities

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

Publication year

2020

Confidentiality

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

Name of the periodical

Physical Review D

ISSN

2470-0010

e-ISSN

—

Volume of the periodical

102

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

29

Pages from-to

032007

UT code for WoS article

000560615600001

EID of the result in the Scopus database

2-s2.0-85096105475