Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions
Measurements of the muon charge asymmetry in inclusive pp → W + X production at √s = 7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 fb[superscript −1] recorded with the CMS detector at the LHC. With a sample of more than 20 million W → μν events, the statistica...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/91211 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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| author | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | Measurements of the muon charge asymmetry in inclusive pp → W + X production at √s = 7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 fb[superscript −1] recorded with the CMS detector at the LHC. With a sample of more than 20 million W → μν events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable x from 10[superscript −3] to 10[superscript −1]. These measurements and the recent CMS measurement of associated W + charm production are used together with the cross sections for inclusive deep inelastic e[superscript ±]p scattering at HERA in a next-to-leading-order QCD analysis. The determination of the valence quark distributions is improved, and the strange-quark distribution is probed directly through the leading-order process g + s → W + c in proton-proton collisions at the LHC. |
| first_indexed | 2024-09-23T08:00:43Z |
| format | Article |
| id | mit-1721.1/91211 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:00:43Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/912112023-02-26T04:11:40Z Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Apyan, Aram Barbieri, R. Bauer, Gerry P. Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Y.-J. Levin, A. Luckey, P. David, Jr. Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, M. Yoon, A. S. Zanetti, Marco Zhukova, Victoria Measurements of the muon charge asymmetry in inclusive pp → W + X production at √s = 7 TeV are presented. The data sample corresponds to an integrated luminosity of 4.7 fb[superscript −1] recorded with the CMS detector at the LHC. With a sample of more than 20 million W → μν events, the statistical precision is greatly improved in comparison to previous measurements. These new results provide additional constraints on the parton distribution functions of the proton in the range of the Bjorken scaling variable x from 10[superscript −3] to 10[superscript −1]. These measurements and the recent CMS measurement of associated W + charm production are used together with the cross sections for inclusive deep inelastic e[superscript ±]p scattering at HERA in a next-to-leading-order QCD analysis. The determination of the valence quark distributions is improved, and the strange-quark distribution is probed directly through the leading-order process g + s → W + c in proton-proton collisions at the LHC. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-10-29T12:42:16Z 2014-10-29T12:42:16Z 2014-08 2013-12 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/91211 Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions.” Phys. Rev. D 90, no. 3 (August 2014). © 2014 CERN, for the CMS Collaboration 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1103/PhysRevD.90.032004 Physical Review D Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society American Physical Society |
| spellingShingle | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Barbieri, Richard Alexander Bauer, Gerry P Dutta, Valentina Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title | Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title_full | Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title_fullStr | Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title_full_unstemmed | Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title_short | Measurement of the Muon Charge Asymmetry in Inclusive pp → W + X Production at √s = 7 TeV and an Improved Determination of Light Parton Distribution Functions |
| title_sort | measurement of the muon charge asymmetry in inclusive pp w x production at √s 7 tev and an improved determination of light parton distribution functions |
| url | http://hdl.handle.net/1721.1/91211 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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