Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC
The first measurements from proton–proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse m...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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Elsevier B.V.
2012
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| Online Access: | http://hdl.handle.net/1721.1/71141 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811076356714266624 |
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| author | Coco, R. Osborne, Louis S. Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Coco, R. Osborne, Louis S. Taylor, Frank E. |
| author_sort | Coco, R. |
| collection | MIT |
| description | The first measurements from proton–proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity, and the relationship between mean transverse momentum and charged-particle multiplicity are measured for events with at least one charged particle in the kinematic range |η|<2.5 and pT>500 MeV. The measurements are compared to Monte Carlo models of proton–proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity at η=0 is measured to be 1.333±0.003(stat.)±0.040(syst.), which is 5–15% higher than the Monte Carlo models predict. |
| first_indexed | 2024-09-23T10:20:09Z |
| format | Article |
| id | mit-1721.1/71141 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:20:09Z |
| publishDate | 2012 |
| publisher | Elsevier B.V. |
| record_format | dspace |
| spelling | mit-1721.1/711412022-09-26T17:17:55Z Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC Coco, R. Osborne, Louis S. Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. Coco, R. Osborne, Louis S. Taylor, Frank E. The first measurements from proton–proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity, and the relationship between mean transverse momentum and charged-particle multiplicity are measured for events with at least one charged particle in the kinematic range |η|<2.5 and pT>500 MeV. The measurements are compared to Monte Carlo models of proton–proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity at η=0 is measured to be 1.333±0.003(stat.)±0.040(syst.), which is 5–15% higher than the Monte Carlo models predict. National Science Foundation (U.S.) United States. Dept. of Energy 2012-06-14T14:31:31Z 2012-06-14T14:31:31Z 2010-03 2010-03 Article http://purl.org/eprint/type/JournalArticle 0370-2693 http://hdl.handle.net/1721.1/71141 Aad, G. et al. “Charged-particle Multiplicities in Pp Interactions at √s=900 GeV Measured with the ATLAS Detector at the LHC.” Physics Letters B 688.1 (2010): 21–42. Web. © 2010 Elsevier B.V. https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1016/j.physletb.2010.03.064 Physics Letters B Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier B.V. New Journal of Physics |
| spellingShingle | Coco, R. Osborne, Louis S. Taylor, Frank E. Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title | Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title_full | Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title_fullStr | Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title_full_unstemmed | Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title_short | Charged-particle multiplicities in pp interactions at √s=900 GeV measured with the ATLAS detector at the LHC |
| title_sort | charged particle multiplicities in pp interactions at √s 900 gev measured with the atlas detector at the lhc |
| url | http://hdl.handle.net/1721.1/71141 https://orcid.org/0000-0002-7586-7253 |
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