First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV
We report on the first measurement of the angular distributions of final state electrons in pp̅ →γ*/Z→e+e-+X [p p overstrike → gamma* / Z→e superscript + e superscript - + X] events produced in the Z boson mass region at √s=1.96 [square root of s=1.96] TeV. The data sample collected by the CDF II...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/65191 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811085864984379392 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | We report on the first measurement of the angular distributions of final state electrons in pp̅ →γ*/Z→e+e-+X [p p overstrike → gamma* / Z→e superscript + e superscript - + X] events produced in the Z boson mass region at √s=1.96 [square root of s=1.96] TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1 fb-1 [fb superscript -1] of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation, consistent with a spin-1 description of the gluon, and demonstrate that, at high values of the transverse momentum, Z bosons are produced via quark-antiquark annihilation and quark-gluon Compton processes. |
| first_indexed | 2024-09-23T13:16:46Z |
| format | Article |
| id | mit-1721.1/65191 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:16:46Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/651912023-02-26T07:51:14Z First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M. E. Bauer, Gerry P. Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. We report on the first measurement of the angular distributions of final state electrons in pp̅ →γ*/Z→e+e-+X [p p overstrike → gamma* / Z→e superscript + e superscript - + X] events produced in the Z boson mass region at √s=1.96 [square root of s=1.96] TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1 fb-1 [fb superscript -1] of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation, consistent with a spin-1 description of the gluon, and demonstrate that, at high values of the transverse momentum, Z bosons are produced via quark-antiquark annihilation and quark-gluon Compton processes. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2011-08-17T21:30:07Z 2011-08-17T21:30:07Z 2011-06 2011-03 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/65191 Aaltonen, T. et al. "First measurement of the angular coefficients of Drell-Yan e+e- pairs in the Z mass region from pp̅ collisions at √s=1.96 TeV" Phys. Rev. Lett., v.106, no.24 (241801) June 2011. © 2011 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevLett.106.241801 Physical review letters 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 | Gomez-Ceballos, Guillelmo Goncharov, Maxim Makhoul, Khaldoun Paus, Christoph M. E. Bauer, Gerry P First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title | First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title_full | First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title_fullStr | First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title_full_unstemmed | First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title_short | First Measurement of the Angular Coefficients of Drell-Yan e+e- Pairs in the Z Mass Region from pp̅ Collisions at √s=1.96 TeV |
| title_sort | first measurement of the angular coefficients of drell yan e e pairs in the z mass region from pp collisions at √s 1 96 tev |
| url | http://hdl.handle.net/1721.1/65191 https://orcid.org/0000-0002-6047-4211 |
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