Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV
A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s = 7 TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb[superscript −1] collected with the CMS detector. A data-driven isolation template me...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2015
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| Online Access: | http://hdl.handle.net/1721.1/94569 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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| author | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Wyslouch, Victoria Barbieri, Richard Alexander Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Dutta, Valentina |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Wyslouch, Victoria Barbieri, Richard Alexander Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Dutta, Valentina |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s = 7 TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb[superscript −1] collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range |η|<2.5 , |η|∉[1.44,1.57] and with an angular separation ΔR>0.45 , is 17.2±0.2(stat)±1.9(syst)±0.4(lumi) pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics. |
| first_indexed | 2024-09-23T11:35:00Z |
| format | Article |
| id | mit-1721.1/94569 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:35:00Z |
| publishDate | 2015 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/945692023-02-26T05:53:11Z Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Wyslouch, Victoria Barbieri, Richard Alexander Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Dutta, Valentina Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Apyan, Aram Barbieri, R. Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Y.-J. Levin, A. Luckey, P. David, Jr. Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, M. Yoon, A. S. Zanetti, Marco Zhukova, Victoria A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s = 7 TeV is presented. The data sample corresponds to an integrated luminosity of 5.0 fb[superscript −1] collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25 GeV respectively, in the pseudorapidity range |η|<2.5 , |η|∉[1.44,1.57] and with an angular separation ΔR>0.45 , is 17.2±0.2(stat)±1.9(syst)±0.4(lumi) pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2015-02-17T18:47:43Z 2015-02-17T18:47:43Z 2014-11 2014-05 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/94569 Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurement of Differential Cross Sections for the Production of a Pair of Isolated Photons in Pp Collisions at √s = 7 TeV.” Eur. Phys. J. C 74, no. 11 (November 2014). 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1140/epjc/s10052-014-3129-3 European Physical Journal C: Particles and Fields Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Wyslouch, Victoria Barbieri, Richard Alexander Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Dutta, Valentina Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title | Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title_full | Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title_fullStr | Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title_full_unstemmed | Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title_short | Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s = 7 TeV |
| title_sort | measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at √s 7 tev |
| url | http://hdl.handle.net/1721.1/94569 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/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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