Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV
Drell-Yan lepton pairs are produced in the process p[¯ over p] → e[superscript +]e[superscript −] + X through an intermediate γ[superscript *]/Z boson. The lepton angular distributions are used to provide information on the electroweak-mixing parameter sin[superscript 2]θ[subscript W] via its observ...
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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/1721.1/84687 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826199196482404352 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | Drell-Yan lepton pairs are produced in the process p[¯ over p] → e[superscript +]e[superscript −] + X through an intermediate γ[superscript *]/Z boson. The lepton angular distributions are used to provide information on the electroweak-mixing parameter sin[superscript 2]θ[subscript W] via its observable effective-leptonic sin[superscript 2]θ[subscript W], or sin[superscript 2]θ[eff over lept]. A new method to infer sin[superscript 2]θ[subscript W] or, equivalently, the W-boson mass M[subscript W] in the on-shell scheme, is developed and tested using a previous CDF Run II measurement of angular distributions from electron pairs in a sample corresponding to 2.1 fb[superscript −1] of integrated luminosity from p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV. The value of sin[superscript 2]θ[eff over lept] is found to be 0.2328 ± 0.0011. Within a specified context of the standard model, this results in sin[superscript 2]θ[subscript W] = 0.2246 ± 0.0011, which corresponds to a W-boson mass of 80.297 ± 0.055 GeV/c[superscript 2], in agreement with previous determinations in electron-position collisions and at the Tevatron collider. |
| first_indexed | 2024-09-23T11:16:16Z |
| format | Article |
| id | mit-1721.1/84687 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:16:16Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/846872022-09-27T18:18:40Z Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Drell-Yan lepton pairs are produced in the process p[¯ over p] → e[superscript +]e[superscript −] + X through an intermediate γ[superscript *]/Z boson. The lepton angular distributions are used to provide information on the electroweak-mixing parameter sin[superscript 2]θ[subscript W] via its observable effective-leptonic sin[superscript 2]θ[subscript W], or sin[superscript 2]θ[eff over lept]. A new method to infer sin[superscript 2]θ[subscript W] or, equivalently, the W-boson mass M[subscript W] in the on-shell scheme, is developed and tested using a previous CDF Run II measurement of angular distributions from electron pairs in a sample corresponding to 2.1 fb[superscript −1] of integrated luminosity from p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV. The value of sin[superscript 2]θ[eff over lept] is found to be 0.2328 ± 0.0011. Within a specified context of the standard model, this results in sin[superscript 2]θ[subscript W] = 0.2246 ± 0.0011, which corresponds to a W-boson mass of 80.297 ± 0.055 GeV/c[superscript 2], in agreement with previous determinations in electron-position collisions and at the Tevatron collider. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-02-07T18:16:02Z 2014-02-07T18:16:02Z 2013-10 2013-07 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/84687 Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Indirect measurement of sin^{2}θ_{W} (M_{W}) using e^{+}e^{-} pairs in the Z-boson region with pp[over ¯] collisions at a center-of-momentum energy of 1.96 TeV.” Physical Review D 88, no. 7 (October 2013). © 2013 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.88.072002 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 American Physical Society |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title | Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_full | Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_fullStr | Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_full_unstemmed | Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_short | Indirect measurement of sin[superscript 2]θ[subscript W] (M[subscript W]) using e[superscript +]e[superscript -] pairs in the Z-boson region with p[¯ over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_sort | indirect measurement of sin superscript 2 θ subscript w m subscript w using e superscript e superscript pairs in the z boson region with p ¯ over p collisions at a center of momentum energy of 1 96 tev |
| url | http://hdl.handle.net/1721.1/84687 https://orcid.org/0000-0002-6047-4211 |
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