Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at root s=13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Ratios of cross sections,
σ
(
Z
+
c
jets
)
/
σ
(
Z
+
jets
)
,
σ
(
Z
+
b
jets
)
/
σ
(
Z
+
jets
)
, and
σ
(
Z
+
c
jets
)
/
σ
(
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
√
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
>
30
GeV
and
|
η
|
<
2.4
for the jets, where
p
T
and
η
represent transverse momentum and pseudorapidity, respectively. The
Z
boson candidates come from leptonic decays into electrons or muons with
p
T
>
25
GeV
and
|
η
|
<
2.4
, and the dilepton mass satisfies
71
<
m
Z
<
111
GeV
. The measured values are
σ
(
Z
+
c
jets
)
/
σ
(
Z
+
jets
)
=
0.102
±
0.002
±
0.009
,
σ
(
Z
+
b
jets
)
/
σ
(
Z
+
jets
)
=
0.0633
±
0.0004
±
0.0015
, and
σ
(
Z
+
c
jets
)
/
σ
(
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 are the first measurements of the cross section ratios at 13 TeV.
σ
(
Z
+
c
jets
)
/
σ
(
Z
+
jets
)
,
σ
(
Z
+
b
jets
)
/
σ
(
Z
+
jets
)
, and
σ
(
Z
+
c
jets
)
/
σ
(
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
√
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
>
30
GeV
and
|
η
|
<
2.4
for the jets, where
p
T
and
η
represent transverse momentum and pseudorapidity, respectively. The
Z
boson candidates come from leptonic decays into electrons or muons with
p
T
>
25
GeV
and
|
η
|
<
2.4
, and the dilepton mass satisfies
71
<
m
Z
<
111
GeV
. The measured values are
σ
(
Z
+
c
jets
)
/
σ
(
Z
+
jets
)
=
0.102
±
0.002
±
0.009
,
σ
(
Z
+
b
jets
)
/
σ
(
Z
+
jets
)
=
0.0633
±
0.0004
±
0.0015
, and
σ
(
Z
+
c
jets
)
/
σ
(
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 are the first measurements of the cross section ratios at 13 TeV.
Date Issued
2020-08-19
Date Acceptance
2020-08-01
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2020, 102 (3), pp.032007 – 1-032007 – 20
ISSN
1550-2368
Publisher
American Physical Society
Start Page
032007 – 1
End Page
032007 – 20
Journal / Book Title
Physical Review D: Particles, Fields, Gravitation and Cosmology
Volume
102
Issue
3
Copyright Statement
© 2020 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000560615600001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
GLUON SPLITTING RATE
PLUS PLUS
PAIRS
Publication Status
Published
Article Number
ARTN 032007
Date Publish Online
2020-08-19