Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV
A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon–nucleon (NN) centre-of-mass energy √s[subscript NN] = 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 μb[superscript −1], the number of W→μ[subscript νμ]...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
| Published: |
Elsevier
2014
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| Online Access: | http://hdl.handle.net/1721.1/92048 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 |
| _version_ | 1826216870012780544 |
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| author | Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Luckey Jr, P David Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Xie, Si Yang, Mingming Bauer, Gerry P Dutta, Valentina |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Luckey Jr, P David Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Xie, Si Yang, Mingming Bauer, Gerry P Dutta, Valentina |
| author_sort | Bendavid, Joshua L. |
| collection | MIT |
| description | A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon–nucleon (NN) centre-of-mass energy √s[subscript NN] = 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 μb[superscript −1], the number of W→μ[subscript νμ] decays is extracted in the region of muon pseudorapidity |η[superscript μ]| <2.1 and transverse momentum p[μ over T] > 25 [GeV over c]. Yields of muons found per unit of pseudorapidity correspond to (159±10(stat.)±12(syst.))×10[superscript −8]W[superscript +] and (154±10(stat.)±12(syst.))×10[superscript −8]W[superscript -] bosons per minimum-bias PbPb collision. The dependence of W production on the centrality of PbPb collisions is consistent with a scaling of the yield by the number of incoherent NN collisions. The yield of W bosons is also studied in a sample of pp interactions at √s[subscript NN] = 2.76 TeV corresponding to an integrated luminosity of 231 nb[superscript −1]. The individual W[superscript +] and W[superscript −] yields in PbPb and pp collisions are found to agree, once the neutron and proton content in Pb nuclei is taken into account. Likewise, the difference observed in the dependence of the positive and negative muon production on pseudorapidity is consistent with next-to-leading-order perturbative QCD calculations. |
| first_indexed | 2024-09-23T16:54:26Z |
| format | Article |
| id | mit-1721.1/92048 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:54:26Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/920482023-02-26T04:27:02Z Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Luckey Jr, P David Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Xie, Si Yang, Mingming Bauer, Gerry P Dutta, Valentina Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Bauer, Gerry P. Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Luckey, P. David, Jr. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Rudolph, Matthew Scott Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, R. Wyslouch, Boleslaw Xie, S. Yang, M. Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco A measurement is presented of W-boson production in PbPb collisions carried out at a nucleon–nucleon (NN) centre-of-mass energy √s[subscript NN] = 2.76 TeV at the LHC using the CMS detector. In data corresponding to an integrated luminosity of 7.3 μb[superscript −1], the number of W→μ[subscript νμ] decays is extracted in the region of muon pseudorapidity |η[superscript μ]| <2.1 and transverse momentum p[μ over T] > 25 [GeV over c]. Yields of muons found per unit of pseudorapidity correspond to (159±10(stat.)±12(syst.))×10[superscript −8]W[superscript +] and (154±10(stat.)±12(syst.))×10[superscript −8]W[superscript -] bosons per minimum-bias PbPb collision. The dependence of W production on the centrality of PbPb collisions is consistent with a scaling of the yield by the number of incoherent NN collisions. The yield of W bosons is also studied in a sample of pp interactions at √s[subscript NN] = 2.76 TeV corresponding to an integrated luminosity of 231 nb[superscript −1]. The individual W[superscript +] and W[superscript −] yields in PbPb and pp collisions are found to agree, once the neutron and proton content in Pb nuclei is taken into account. Likewise, the difference observed in the dependence of the positive and negative muon production on pseudorapidity is consistent with next-to-leading-order perturbative QCD calculations. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-12-08T17:07:58Z 2014-12-08T17:07:58Z 2012-07 2012-07 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/92048 Chatrchyan, S., V. Khachatryan, A.M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Study of W Boson Production in PbPb and Pp Collisions at √s[subscript NN] = 2.76 TeV.” Physics Letters B 715, no. 1–3 (August 2012): 66–87. © 2012 CERN https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 en_US http://dx.doi.org/10.1016/j.physletb.2012.07.025 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Luckey Jr, P David Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Xie, Si Yang, Mingming Bauer, Gerry P Dutta, Valentina Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title | Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title_full | Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title_fullStr | Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title_full_unstemmed | Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title_short | Study of W boson production in PbPb and pp collisions at √s[subscript NN] = 2.76 TeV |
| title_sort | study of w boson production in pbpb and pp collisions at √s subscript nn 2 76 tev |
| url | http://hdl.handle.net/1721.1/92048 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 |
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