Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV
We present a measurement of b jet transverse momentum (p T ) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb −1 collected with the CMS detector at the LHC. Jets from b quark fragmentation are found by exploiting the long lifetime of hadrons containing a b quark t...
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| Format: | Article |
| Language: | English |
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Elsevier BV
2020
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| Online Access: | https://hdl.handle.net/1721.1/124765 |
| _version_ | 1811093823924731904 |
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| author | CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics CMS Collaboration |
| author_sort | CMS Collaboration |
| collection | MIT |
| description | We present a measurement of b jet transverse momentum (p T ) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb −1 collected with the CMS detector at the LHC. Jets from b quark fragmentation are found by exploiting the long lifetime of hadrons containing a b quark through tagging methods using distributions of the secondary vertex mass and displacement. Extracted cross sections for b jets are scaled by the effective number of nucleon–nucleon collisions and are compared to a reference obtained from PYTHIA simulations of pp collisions. The PYTHIA-based estimate of the nuclear modification factor is found to be 1.22±0.15(stat+syst pPb)±0.27(syst PYTHIA) averaged over all jets with p T between 55 and 400 GeV/c and with |η lab |<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics. ©2016 |
| first_indexed | 2024-09-23T15:51:16Z |
| format | Article |
| id | mit-1721.1/124765 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:51:16Z |
| publishDate | 2020 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1247652022-09-29T16:36:36Z Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV Transverse momentum spectra of inclusive b jets in pPb collisions at √[superscript s]NN = 5.02 TeV CMS Collaboration Massachusetts Institute of Technology. Department of Physics We present a measurement of b jet transverse momentum (p T ) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb −1 collected with the CMS detector at the LHC. Jets from b quark fragmentation are found by exploiting the long lifetime of hadrons containing a b quark through tagging methods using distributions of the secondary vertex mass and displacement. Extracted cross sections for b jets are scaled by the effective number of nucleon–nucleon collisions and are compared to a reference obtained from PYTHIA simulations of pp collisions. The PYTHIA-based estimate of the nuclear modification factor is found to be 1.22±0.15(stat+syst pPb)±0.27(syst PYTHIA) averaged over all jets with p T between 55 and 400 GeV/c and with |η lab |<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics. ©2016 2020-04-21T17:46:00Z 2020-04-21T17:46:00Z 2016-03 2015-10 2019-06-03T20:37:02Z Article http://purl.org/eprint/type/JournalArticle 1873-2445 0370-2693 https://hdl.handle.net/1721.1/124765 .CMS Collaboration (V. Khachatryan, et al.), "Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV." Physics letters B 754 (March 2016): p. 59-80 doi 10.1016/J.PHYSLETB.2016.01.010 ©2016 Author(s) en 10.1016/J.PHYSLETB.2016.01.010 Physics letters B Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | CMS Collaboration Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title | Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title_full | Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title_fullStr | Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title_full_unstemmed | Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title_short | Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV |
| title_sort | transverse momentum spectra of inclusive b jets in ppb collisions at √ s nn 5 02 tev |
| url | https://hdl.handle.net/1721.1/124765 |
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