Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV
A study of forward energy flow and central charged-particle multiplicity in events with W and Z bosons decaying into leptons is presented. The analysis uses a sample of 7 TeV pp collisions, corresponding to an integrated luminosity of 36 pb[superscript −1], recorded by the CMS experiment at the LHC....
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
| Published: |
Springer-Verlag
2017
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| Online Access: | http://hdl.handle.net/1721.1/107696 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0001-6332-5839 |
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| author | Alver, Burak Han Bauer, Gerry P Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, Philip Coleman Klute, Markus Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Rudolph, Matthew Scott Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Xie, Si Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Chan, M. Kim, Y. Li, W. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Alver, Burak Han Bauer, Gerry P Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, Philip Coleman Klute, Markus Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Rudolph, Matthew Scott Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Xie, Si Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Chan, M. Kim, Y. Li, W. |
| author_sort | Alver, Burak Han |
| collection | MIT |
| description | A study of forward energy flow and central charged-particle multiplicity in events with W and Z bosons decaying into leptons is presented. The analysis uses a sample of 7 TeV pp collisions, corresponding to an integrated luminosity of 36 pb[superscript −1], recorded by the CMS experiment at the LHC. The observed forward energy depositions, their correlations, and the central charged-particle multiplicities are not
well described by the available non-diffractive soft-hadron production models. A study of about 300 events with no significant energy deposited in one of the forward calorimeters, corresponding to a pseudorapidity gap of at least 1.9 units, is also presented. An indication for a diffractive component in these events comes from the observation that the
majority of the charged leptons from the W(Z) decays are found in the hemisphere opposite to the gap. When fitting the signed lepton pseudorapidity distribution of these events with predicted distributions from an admixture of diffractive (POMPYT) and non-diffractive (PYTHIA) Monte Carlo simulations, the diffractive component is determined to be (50.0 ± 9.3 (stat.) ± 5.2 (syst.))%. |
| first_indexed | 2024-09-23T11:25:29Z |
| format | Article |
| id | mit-1721.1/107696 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T11:25:29Z |
| publishDate | 2017 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/1076962023-02-26T10:19:12Z Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV Alver, Burak Han Bauer, Gerry P Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, Philip Coleman Klute, Markus Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Rudolph, Matthew Scott Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Xie, Si Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Chan, M. Kim, Y. Li, W. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Alver, Burak Han Bauer, Gerry P Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, Matthew Hans Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, Philip Coleman Kim, Yongsun Klute, Markus Lee, Yen-Jie Li, Wei Loizides, Constantinos Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Rudolph, Matthew Scott Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Xie, Si Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco A study of forward energy flow and central charged-particle multiplicity in events with W and Z bosons decaying into leptons is presented. The analysis uses a sample of 7 TeV pp collisions, corresponding to an integrated luminosity of 36 pb[superscript −1], recorded by the CMS experiment at the LHC. The observed forward energy depositions, their correlations, and the central charged-particle multiplicities are not well described by the available non-diffractive soft-hadron production models. A study of about 300 events with no significant energy deposited in one of the forward calorimeters, corresponding to a pseudorapidity gap of at least 1.9 units, is also presented. An indication for a diffractive component in these events comes from the observation that the majority of the charged leptons from the W(Z) decays are found in the hemisphere opposite to the gap. When fitting the signed lepton pseudorapidity distribution of these events with predicted distributions from an admixture of diffractive (POMPYT) and non-diffractive (PYTHIA) Monte Carlo simulations, the diffractive component is determined to be (50.0 ± 9.3 (stat.) ± 5.2 (syst.))%. United States. Dept. of Energy National Science Foundation (U.S.) 2017-03-24T18:16:40Z 2017-03-24T18:16:40Z 2012-01 2011-11 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/107696 The CMS Collaboration et al. “Forward Energy Flow, Central Charged-Particle Multiplicities, and Pseudorapidity Gaps in W and Z Boson Events from Pp Collisions at √s = 7 TeV.” The European Physical Journal C 72.1 (2012): n. pag. © CERN for the benefit of the CMS collaboration 2012 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0001-6332-5839 en_US http://dx.doi.org/10.1140/epjc/s10052-011-1839-3 European Physical Journal C Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer |
| spellingShingle | Alver, Burak Han Bauer, Gerry P Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Dutta, Valentina Everaerts, Pieter Bruno Bart Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Harris, Philip Coleman Klute, Markus Lee, Yen-Jie Loizides, Constantinos Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Rudolph, Matthew Scott Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Xie, Si Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Chan, M. Kim, Y. Li, W. Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title | Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title_full | Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title_fullStr | Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title_full_unstemmed | Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title_short | Forward energy flow, central charged-particle multiplicities, and pseudorapidity gaps in W and Z boson events from pp collisions at √s = 7 TeV |
| title_sort | forward energy flow central charged particle multiplicities and pseudorapidity gaps in w and z boson events from pp collisions at √s 7 tev |
| url | http://hdl.handle.net/1721.1/107696 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0001-6332-5839 |
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