Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC
A multivariate likelihood method to measure electroweak couplings with the Drell–Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/70112 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/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 |
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| author | Alver, Burak Han Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Everaerts, Pieter Bruno Bart 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 Stephans, George S. F. Sung, Kevin Kai Hong Wenger, Edward Allen Xie, Si Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Velicanu, Dragos Alexandru Wyslouch, Boleslaw Rudolph, Matthew Scott Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Yang, Mingming Bauer, Gerry P Harris, Philip Coleman Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Roland, Christof E Roland, Gunther M |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Alver, Burak Han Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Everaerts, Pieter Bruno Bart 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 Stephans, George S. F. Sung, Kevin Kai Hong Wenger, Edward Allen Xie, Si Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Velicanu, Dragos Alexandru Wyslouch, Boleslaw Rudolph, Matthew Scott Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Yang, Mingming Bauer, Gerry P Harris, Philip Coleman Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Roland, Christof E Roland, Gunther M |
| author_sort | Alver, Burak Han |
| collection | MIT |
| description | A multivariate likelihood method to measure electroweak couplings with the Drell–Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent quark and antiquark to the two protons in a collision is resolved statistically using correlations between the observables. The method is applied to a sample of dimuon events from proton-proton collisions at √s=7 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 1.1 fb[superscript -1]. From the dominant uu̅ , dd̅ -->γ[superscript *]/Z-->μ-μ+ process, the effective weak mixing angle parameter is measured to be sin[superscript 2]theta[subscript eff]=0.2287±0.0020(stat.)±0.0025 (syst.). This result is consistent
with measurements from other processes, as expected within the standard model. |
| first_indexed | 2024-09-23T13:02:37Z |
| format | Article |
| id | mit-1721.1/70112 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:02:37Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/701122023-02-26T10:38:19Z Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC Alver, Burak Han Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Everaerts, Pieter Bruno Bart 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 Stephans, George S. F. Sung, Kevin Kai Hong Wenger, Edward Allen Xie, Si Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Velicanu, Dragos Alexandru Wyslouch, Boleslaw Rudolph, Matthew Scott Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Yang, Mingming Bauer, Gerry P Harris, Philip Coleman Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Roland, Christof E Roland, Gunther M Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Bauer, Gerry P. Alver, Burak Han Bauer, Gerry P. Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, P. Kim, Y. Klute, Markus Lee, Y. J. Li, W. Loizides, Constantin Luckey, P. David, Jr. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Rudolph, M. Stephans, George S. F. Stockli, F. Sumorok, Konstanty C. Sung, Kevin Kai Hong Wenger, Edward Allen Wolf, R. Xie, Si Yang, M. Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Velicanu, Dragos Alexandru Wyslouch, Boleslaw A multivariate likelihood method to measure electroweak couplings with the Drell–Yan process at the LHC is presented. The process is described by the dilepton rapidity, invariant mass, and decay angle distributions. The decay angle ambiguity due to the unknown assignment of the scattered constituent quark and antiquark to the two protons in a collision is resolved statistically using correlations between the observables. The method is applied to a sample of dimuon events from proton-proton collisions at √s=7 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 1.1 fb[superscript -1]. From the dominant uu̅ , dd̅ -->γ[superscript *]/Z-->μ-μ+ process, the effective weak mixing angle parameter is measured to be sin[superscript 2]theta[subscript eff]=0.2287±0.0020(stat.)±0.0025 (syst.). This result is consistent with measurements from other processes, as expected within the standard model. National Science Foundation (U.S.) United States. Dept. of Energy Alfred P. Sloan Foundation 2012-04-24T15:11:09Z 2012-04-24T15:11:09Z 2011-12 2011-10 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/70112 Chatrchyan, S. et al. (CMS Collaboration). “Measurement of the Weak Mixing Angle with the Drell-Yan Process in Proton-proton Collisions at the LHC.” Physical Review D 84.11 (2011): [23 pages]. 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/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 en_US http://dx.doi.org/10.1103/PhysRevD.84.112002 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Alver, Burak Han Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Everaerts, Pieter Bruno Bart 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 Stephans, George S. F. Sung, Kevin Kai Hong Wenger, Edward Allen Xie, Si Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Velicanu, Dragos Alexandru Wyslouch, Boleslaw Rudolph, Matthew Scott Stoeckli, Fabian Sumorok, Konstanty C Wolf, Roger Yang, Mingming Bauer, Gerry P Harris, Philip Coleman Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Roland, Christof E Roland, Gunther M Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title | Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title_full | Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title_fullStr | Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title_full_unstemmed | Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title_short | Measurement of the weak mixing angle with the Drell-Yan process in proton-proton collisions at the LHC |
| title_sort | measurement of the weak mixing angle with the drell yan process in proton proton collisions at the lhc |
| url | http://hdl.handle.net/1721.1/70112 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/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 |
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