Enhanced Production of Λb0 Baryons in High-Multiplicity pp Collisions at s =13 TeV
(2024) In Physical Review Letters 132(8).- Abstract
- The production rate of Λb0 baryons relative to B0 mesons in pp collisions at a center-of-mass energy s=13 TeV is measured by the LHCb experiment. The ratio of Λb0 to B0 production cross sections shows a significant dependence on both the transverse momentum and the measured charged-particle multiplicity. At low multiplicity, the ratio measured at LHCb is consistent with the value measured in e+e- collisions, and increases by a factor of ∼2 with increasing multiplicity. At relatively low transverse momentum, the ratio of Λb0 to B0 cross sections is higher than what is measured in e+e- collisions, but converges with the e+e- ratio as the momentum increases. These results imply that the evolution of heavy b quarks into final-state hadrons is... (More)
- The production rate of Λb0 baryons relative to B0 mesons in pp collisions at a center-of-mass energy s=13 TeV is measured by the LHCb experiment. The ratio of Λb0 to B0 production cross sections shows a significant dependence on both the transverse momentum and the measured charged-particle multiplicity. At low multiplicity, the ratio measured at LHCb is consistent with the value measured in e+e- collisions, and increases by a factor of ∼2 with increasing multiplicity. At relatively low transverse momentum, the ratio of Λb0 to B0 cross sections is higher than what is measured in e+e- collisions, but converges with the e+e- ratio as the momentum increases. These results imply that the evolution of heavy b quarks into final-state hadrons is influenced by the density of the hadronic environment produced in the collision. Comparisons with several models and implications for the mechanisms enforcing quark confinement are discussed. © 2024 CERN. (Less)
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- author
- Aaij, R. ; Ruiz-Vidal, Joan LU and Zunica, G.
- author collaboration
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Hadrons, Momentum, Tellurium compounds, A-center, Center-of-mass energies, Centre-of-mass energies, Charged particle multiplicities, Final state, Hadronics, High multiplicity, Production cross section, Production rates, Transverse momenta, article, baryon, Charged particles
- in
- Physical Review Letters
- volume
- 132
- issue
- 8
- article number
- 081901
- publisher
- American Physical Society
- external identifiers
-
- scopus:85185840573
- pmid:38457697
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.132.081901
- language
- English
- LU publication?
- yes
- id
- 4a81f8be-4e52-4703-a7ba-2f003d05344f
- date added to LUP
- 2024-03-28 16:00:28
- date last changed
- 2024-03-29 03:00:06
@article{4a81f8be-4e52-4703-a7ba-2f003d05344f, abstract = {{The production rate of Λb0 baryons relative to B0 mesons in pp collisions at a center-of-mass energy s=13 TeV is measured by the LHCb experiment. The ratio of Λb0 to B0 production cross sections shows a significant dependence on both the transverse momentum and the measured charged-particle multiplicity. At low multiplicity, the ratio measured at LHCb is consistent with the value measured in e+e- collisions, and increases by a factor of ∼2 with increasing multiplicity. At relatively low transverse momentum, the ratio of Λb0 to B0 cross sections is higher than what is measured in e+e- collisions, but converges with the e+e- ratio as the momentum increases. These results imply that the evolution of heavy b quarks into final-state hadrons is influenced by the density of the hadronic environment produced in the collision. Comparisons with several models and implications for the mechanisms enforcing quark confinement are discussed. © 2024 CERN.}}, author = {{Aaij, R. and Ruiz-Vidal, Joan and Zunica, G.}}, issn = {{1079-7114}}, keywords = {{Hadrons; Momentum; Tellurium compounds; A-center; Center-of-mass energies; Centre-of-mass energies; Charged particle multiplicities; Final state; Hadronics; High multiplicity; Production cross section; Production rates; Transverse momenta; article; baryon; Charged particles}}, language = {{eng}}, number = {{8}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Enhanced Production of Λb0 Baryons in High-Multiplicity pp Collisions at s =13 TeV}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.132.081901}}, doi = {{10.1103/PhysRevLett.132.081901}}, volume = {{132}}, year = {{2024}}, }