Studies of beauty suppression via nonprompt D-0 mesons in Pb-Pb collisions at root s(NN)=5.02 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The transverse momentum spectra of
D
0
mesons from
b
hadron decays are measured at midrapidity (
|
y
|
<
1
) in
p
p
and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The
D
0
mesons from
b
hadron decays are distinguished from prompt
D
0
mesons by their decay topologies. In Pb-Pb collisions, the
B
→
D
0
yield is found to be suppressed in the measured
p
T
range from 2 to
100
GeV
/
c
as compared to
p
p
collisions. The suppression is weaker than that of prompt
D
0
mesons and charged hadrons for
p
T
around
10
GeV
/
c
. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured
B
→
D
0
suppression at higher
p
T
, the data show an indication of larger suppression than the model predictions in the range of
2
<
p
T
<
5
GeV
/
c
.
D
0
mesons from
b
hadron decays are measured at midrapidity (
|
y
|
<
1
) in
p
p
and Pb-Pb collisions at a nucleon-nucleon center of mass energy of 5.02 TeV with the CMS detector at the LHC. The
D
0
mesons from
b
hadron decays are distinguished from prompt
D
0
mesons by their decay topologies. In Pb-Pb collisions, the
B
→
D
0
yield is found to be suppressed in the measured
p
T
range from 2 to
100
GeV
/
c
as compared to
p
p
collisions. The suppression is weaker than that of prompt
D
0
mesons and charged hadrons for
p
T
around
10
GeV
/
c
. While theoretical calculations incorporating partonic energy loss in the quark-gluon plasma can successfully describe the measured
B
→
D
0
suppression at higher
p
T
, the data show an indication of larger suppression than the model predictions in the range of
2
<
p
T
<
5
GeV
/
c
.
Date Issued
2019-07-09
Date Acceptance
2019-07-01
Citation
Physical Review Letters, 2019, 123 (2)
ISSN
0031-9007
Publisher
American Physical Society
Journal / Book Title
Physical Review Letters
Volume
123
Issue
2
Copyright Statement
© 2019 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. 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.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000474894200007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
LARGE TRANSVERSE-MOMENTA
QUARK-GLUON PLASMA
PERSPECTIVE
MATTER
Publication Status
Published
Article Number
ARTN 022001
Date Publish Online
2019-07-09