Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS
A measurement of the cross-section for ϒ(1S)→μ[superscript +]μ[superscript −] production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2 and 1.2<|yϒ(1S...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2015
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| Online Access: | http://hdl.handle.net/1721.1/95981 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811079246059143168 |
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| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | A measurement of the cross-section for ϒ(1S)→μ[superscript +]μ[superscript −] production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2 and 1.2<|yϒ(1S)|<2.4. The measurement requires that both muons have transverse momentum p[subscript T superscript μ] > 4 GeV and pseudorapidity |ημ|<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb[superscript −1], collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. |
| first_indexed | 2024-09-23T11:12:10Z |
| format | Article |
| id | mit-1721.1/95981 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:12:10Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/959812022-09-27T17:48:34Z Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. A measurement of the cross-section for ϒ(1S)→μ[superscript +]μ[superscript −] production in proton–proton collisions at centre of mass energy of 7 TeV is presented. The cross-section is measured as a function of the ϒ(1S) transverse momentum in two bins of rapidity, |yϒ(1S)|<1.2 and 1.2<|yϒ(1S)|<2.4. The measurement requires that both muons have transverse momentum p[subscript T superscript μ] > 4 GeV and pseudorapidity |ημ|<2.5 in order to reduce theoretical uncertainties on the acceptance, which depend on the poorly known polarisation. The results are based on an integrated luminosity of 1.13 pb[superscript −1], collected with the ATLAS detector at the Large Hadron Collider. The cross-section measurement is compared to theoretical predictions: it agrees to within a factor of two with a prediction based on the NRQCD model including colour-singlet and colour-octet matrix elements as implemented in Pythia while it disagrees by up to a factor of ten with the next-to-leading order prediction based on the colour-singlet model. National Science Foundation (U.S.) United States. Dept. of Energy Brookhaven National Laboratory European Organization for Nuclear Research 2015-03-12T15:55:52Z 2015-03-12T15:55:52Z 2011-10 2011-09 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/95981 Aad, G., B. Abbott, J. Abdallah, A.A. Abdelalim, A. Abdesselam, O. Abdinov, B. Abi, et al. “Measurement of the ϒ(1S) Production Cross-Section in Pp Collisions at √s = 7 TeV in ATLAS.” Physics Letters B 705, no. 1–2 (November 2011): 9–27. https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1016/j.physletb.2011.09.092 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Taylor, Frank E. Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title | Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title_full | Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title_fullStr | Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title_full_unstemmed | Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title_short | Measurement of the ϒ(1S) production cross-section in pp collisions at √s = 7 TeV in ATLAS |
| title_sort | measurement of the ϒ 1s production cross section in pp collisions at √s 7 tev in atlas |
| url | http://hdl.handle.net/1721.1/95981 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke measurementofthey1sproductioncrosssectioninppcollisionsats7tevinatlas |