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...

Descripción completa

Detalles Bibliográficos
Autor principal: Kim, Hyunchul
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