Evidence for Modification of b Quark Hadronization in High-Multiplicity pp Collisions at √s=13 TeV
The production rate of B-s(0) mesons relative to B-0 mesons is measured by the LHCb experiment in pp collisions at a center-of-mass energy √s = 13 TeV over the forward rapidity interval 2 < y < 4.5 as a function of the charged particle multiplicity measured in the event. Evidence at the 3.4 sigma level is found for an increase of the ratio of B-s(0) to B-0 cross sections with multiplicity at transverse momenta below 6 GeV=c, with no significant multiplicity dependence at higher transverse momentum. Comparison with data from e(+)e(-) collisions implies that the density of the hadronic medium may affect the production rates of B mesons. This is qualitatively consistent with the emergence of quark coalescence as an additional hadronization mechanism in high-multiplicity collisions.
WOS:001162017900001
2023-08-10
131
6
061901
REVIEWED
Funder | Grant Number |
CERN | |
CAPES (Brazil) | |
CNPq (Brazil) | |
FAPERJ (Brazil) | |
FINEP (Brazil) | |
MOST (China) | |
NSFC (China) | |
CNRS/IN2P3 (France) | |
BMBF (Germany) | |
DFG (Germany) | |
MPG (Germany) | |
INFN (Italy) | |
NWO (The Netherlands) | |
MNiSW (Poland) | |
NCN (Poland) | |
MEN/IFA (Romania) | |
MICINN (Spain) | |
SNSF (Switzerland) | |
SER (Switzerland) | |
NASU (Ukraine) | |
STFC (United Kingdom) | |
DOE NP (U.S.A.) | |
NSF (U.S.A.) | |
ARC (Australia) | |
ARDC (Australia) | |
Minciencias (Colombia) | |
AvH Foundation (Germany) | |
EPLANET (European Union) | |
Marie Sklodowska-Curie Actions (European Union) | |
ERC (European Union) | |
A*MIDEX (France) | |
ANR (France) | |
IPhU (France) | |
Labex P2IO (France) | |
Region Auvergne-Rhone-Alpes (France) | |
Key Research Program of Frontier Sciences of CAS (China) | |
CAS PIFI (China) | |
CAS CCEPP (China) | |
Fundamental Research Funds for the Central Universities (China) | |
Sci. & Tech. Program of Guangzhou (China) | |
GVA (Spain) | |
XuntaGal (Spain) | |
GENCAT (Spain) | |
Prog. Atraccion Talento, CM (Spain) | |
SRC (Sweden) | |
Leverhulme Trust (United Kingdom) | |
UKRI (United Kingdom) | |
Royal Society (United Kingdom) | |