Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV
Drell-Yan lepton pairs are produced in the process p[bar over p] → μ[superscript +]μ[superscript −] + X through an intermediate γ[superscript ∗]/Zboson. The forward-backward asymmetry in the polar-angle distribution of the μ[superscript −] as a function of the invariant mass of the μ[superscript +]μ...
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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/1721.1/88936 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826195177445785600 |
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| author | Goncharov, Maxim Gomez-Ceballos, Guillelmo Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Goncharov, Maxim Gomez-Ceballos, Guillelmo Paus, Christoph M. E. |
| author_sort | Goncharov, Maxim |
| collection | MIT |
| description | Drell-Yan lepton pairs are produced in the process p[bar over p] → μ[superscript +]μ[superscript −] + X through an intermediate γ[superscript ∗]/Zboson. The forward-backward asymmetry in the polar-angle distribution of the μ[superscript −] as a function of the invariant mass of the μ[superscript +]μ[superscript −] pair is used to obtain the effective leptonic determination sin[superscript 2]θ[lept over eff] of the electroweak-mixing parameter sin[superscript 2]θ[subscript W], from which the value of sin[superscript 2]θ[subscript W] is derived assuming the standard model. The measurement sample, recorded by the Collider Detector at Fermilab (CDF), corresponds to 9.2 fb[superscript −1] of integrated luminosity from p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV, and is the full CDF Run II data set. The value of sin[superscript 2]θ[lept over eff] is found to be 0.2315 ± 0.0010, where statistical and systematic uncertainties are combined in quadrature. When interpreted within the context of the standard model using the on-shell renormalization scheme, where sin[superscript 2]θ[subscript W] = 1 − M[2 over W]/M[2 over Z], the measurement yields sin[superscript 2]θ[subscript W] = 0.2233 ± 0.0009, or equivalently a W-boson mass of 80.365 ± 0.047 GeV/c[superscript 2]. The value of the W-boson mass is in agreement with previous determinations in electron-positron collisions and at the Tevatron collider. |
| first_indexed | 2024-09-23T10:08:23Z |
| format | Article |
| id | mit-1721.1/88936 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:08:23Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/889362022-09-30T19:08:16Z Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV Goncharov, Maxim Gomez-Ceballos, Guillelmo 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[bar over p] → μ[superscript +]μ[superscript −] + X through an intermediate γ[superscript ∗]/Zboson. The forward-backward asymmetry in the polar-angle distribution of the μ[superscript −] as a function of the invariant mass of the μ[superscript +]μ[superscript −] pair is used to obtain the effective leptonic determination sin[superscript 2]θ[lept over eff] of the electroweak-mixing parameter sin[superscript 2]θ[subscript W], from which the value of sin[superscript 2]θ[subscript W] is derived assuming the standard model. The measurement sample, recorded by the Collider Detector at Fermilab (CDF), corresponds to 9.2 fb[superscript −1] of integrated luminosity from p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV, and is the full CDF Run II data set. The value of sin[superscript 2]θ[lept over eff] is found to be 0.2315 ± 0.0010, where statistical and systematic uncertainties are combined in quadrature. When interpreted within the context of the standard model using the on-shell renormalization scheme, where sin[superscript 2]θ[subscript W] = 1 − M[2 over W]/M[2 over Z], the measurement yields sin[superscript 2]θ[subscript W] = 0.2233 ± 0.0009, or equivalently a W-boson mass of 80.365 ± 0.047 GeV/c[superscript 2]. The value of the W-boson mass is in agreement with previous determinations in electron-positron collisions and at the Tevatron collider. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-08-21T13:36:02Z 2014-08-21T13:36:02Z 2014-04 2014-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/88936 Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV.” Phys. Rev. D 89, no. 7 (April 2014). © 2014 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.89.072005 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 | Goncharov, Maxim Gomez-Ceballos, Guillelmo Paus, Christoph M. E. Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title | Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_full | Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_fullStr | Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar 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] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_short | Indirect measurement of sin[superscript 2]θ[subscript W] (or M[subscript W) using μ[superscript +]μ[superscript −] pairs from γ*/Z bosons produced in p[bar over p] collisions at a center-of-momentum energy of 1.96 TeV |
| title_sort | indirect measurement of sin superscript 2 θ subscript w or m subscript w using μ superscript μ superscript pairs from γ z bosons produced in p bar over p collisions at a center of momentum energy of 1 96 tev |
| url | http://hdl.handle.net/1721.1/88936 https://orcid.org/0000-0002-6047-4211 |
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