Cargando…
Open beauty measurements in pPb collisions with CMS
We report the first measurements of fully reconstructed B mesons in collisions involving heavy ions. Rapidity and transverse momentum cross sections, measured at $\sqrt{s_{NN}}=5.02$ TeV with the CMS detector, will be presented. For the same collision system, we will also report on the production o...
Autor principal: | |
---|---|
Lenguaje: | eng |
Publicado: |
2014
|
Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.nuclphysa.2014.08.064 http://cds.cern.ch/record/1747541 |
_version_ | 1780942941845454848 |
---|---|
author | Kim, Hyunchul |
author_facet | Kim, Hyunchul |
author_sort | Kim, Hyunchul |
collection | CERN |
description | We report the first measurements of fully reconstructed B mesons in collisions involving heavy ions. Rapidity and transverse momentum cross sections, measured at $\sqrt{s_{NN}}=5.02$ TeV with the CMS detector, will be presented. For the same collision system, we will also report on the production of inclusive $b$-hadrons identified via their decays into $J/\psi$ displaced from the primary collision vertex, and measured in a similar kinematic range as the identified B mesons. The nuclear modification factors, which are constructed using a theoretically calculated pp reference, will be shown together with cross-section asymmetries between equivalent positive and negative pseudo-rapidity ranges in the center-of-mass frame of the collision. |
id | cern-1747541 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2014 |
record_format | invenio |
spelling | cern-17475412019-09-30T06:29:59Zdoi:10.1016/j.nuclphysa.2014.08.064http://cds.cern.ch/record/1747541engKim, HyunchulOpen beauty measurements in pPb collisions with CMSDetectors and Experimental TechniquesWe report the first measurements of fully reconstructed B mesons in collisions involving heavy ions. Rapidity and transverse momentum cross sections, measured at $\sqrt{s_{NN}}=5.02$ TeV with the CMS detector, will be presented. For the same collision system, we will also report on the production of inclusive $b$-hadrons identified via their decays into $J/\psi$ displaced from the primary collision vertex, and measured in a similar kinematic range as the identified B mesons. The nuclear modification factors, which are constructed using a theoretically calculated pp reference, will be shown together with cross-section asymmetries between equivalent positive and negative pseudo-rapidity ranges in the center-of-mass frame of the collision.The B+ , B0 and Bs0 mesons are exclusively reconstructed in proton–lead (pPb) collisions at sNN=5.02 TeV by the CMS Collaboration at the Large Hadron Collider (LHC). The cross sections are measured in the range of transverse momentum of 10 to 60 GeV/c and the center-of-mass rapidity smaller than 1.93. The nuclear modification factor, which is the ratio of the cross section in between pPb and proton–proton (pp) collisions, is estimated using the experimental data from pPb collisions and theoretical calculations as the pp reference. The calculated nuclear modification factors for each particle species are consistent with unity within the current uncertainties. The forward-to-backward asymmetry of B+ is also analyzed and does not show any nuclear effect in the measured rapidity range.CMS-CR-2014-162oai:cds.cern.ch:17475412014-07-25 |
spellingShingle | Detectors and Experimental Techniques Kim, Hyunchul Open beauty measurements in pPb collisions with CMS |
title | Open beauty measurements in pPb collisions with CMS |
title_full | Open beauty measurements in pPb collisions with CMS |
title_fullStr | Open beauty measurements in pPb collisions with CMS |
title_full_unstemmed | Open beauty measurements in pPb collisions with CMS |
title_short | Open beauty measurements in pPb collisions with CMS |
title_sort | open beauty measurements in ppb collisions with cms |
topic | Detectors and Experimental Techniques |
url | https://dx.doi.org/10.1016/j.nuclphysa.2014.08.064 http://cds.cern.ch/record/1747541 |
work_keys_str_mv | AT kimhyunchul openbeautymeasurementsinppbcollisionswithcms |