Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV
An analysis is made of the particle composition in the final state of proton-proton (pp) collisions at 7 TeV as a function of the charged particle multiplicity (dNch/dη). The thermal model is used to determine the chemical freeze-out temperature as well as the radius and strangeness suppression fact...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-01-01
|
| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2019/5367349 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832553265138499584 |
|---|---|
| author | Natasha Sharma Jean Cleymans Boris Hippolyte |
| author_facet | Natasha Sharma Jean Cleymans Boris Hippolyte |
| author_sort | Natasha Sharma |
| collection | DOAJ |
| description | An analysis is made of the particle composition in the final state of proton-proton (pp) collisions at 7 TeV as a function of the charged particle multiplicity (dNch/dη). The thermal model is used to determine the chemical freeze-out temperature as well as the radius and strangeness suppression factor γs. Three different ensembles are used in the analysis: the grand canonical ensemble, the canonical ensemble with exact strangeness conservation, and the canonical ensemble with exact baryon number, strangeness, and electric charge conservation. It is shown that for the highest multiplicity class the three ensembles lead to the same result. This allows us to conclude that this multiplicity class is close to the thermodynamic limit. It is estimated that the final state in pp collisions could reach the thermodynamic limit when dNch/dη is larger than twenty per unit of rapidity, corresponding to about 300 particles in the final state when integrated over the full rapidity interval. |
| format | Article |
| id | doaj-art-723fdbd4671b4d5db0bb070e0aa612a1 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-723fdbd4671b4d5db0bb070e0aa612a12025-02-03T05:54:29ZengWileyAdvances in High Energy Physics1687-73571687-73652019-01-01201910.1155/2019/53673495367349Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeVNatasha Sharma0Jean Cleymans1Boris Hippolyte2Department of Physics, Panjab University, Chandigarh 160014, IndiaUCT-CERN Research Centre and Department of Physics, University of Cape Town, Rondebosch 7701, South AfricaInstitut Pluridisciplinaire Hubert Curien and Université de Strasbourg Institute for Advanced Study, CNRS-IN2P3, Strasbourg, FranceAn analysis is made of the particle composition in the final state of proton-proton (pp) collisions at 7 TeV as a function of the charged particle multiplicity (dNch/dη). The thermal model is used to determine the chemical freeze-out temperature as well as the radius and strangeness suppression factor γs. Three different ensembles are used in the analysis: the grand canonical ensemble, the canonical ensemble with exact strangeness conservation, and the canonical ensemble with exact baryon number, strangeness, and electric charge conservation. It is shown that for the highest multiplicity class the three ensembles lead to the same result. This allows us to conclude that this multiplicity class is close to the thermodynamic limit. It is estimated that the final state in pp collisions could reach the thermodynamic limit when dNch/dη is larger than twenty per unit of rapidity, corresponding to about 300 particles in the final state when integrated over the full rapidity interval.http://dx.doi.org/10.1155/2019/5367349 |
| spellingShingle | Natasha Sharma Jean Cleymans Boris Hippolyte Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV Advances in High Energy Physics |
| title | Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV |
| title_full | Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV |
| title_fullStr | Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV |
| title_full_unstemmed | Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV |
| title_short | Thermodynamic Limit in High-Multiplicity Proton-Proton Collisions at s=7 TeV |
| title_sort | thermodynamic limit in high multiplicity proton proton collisions at s 7 tev |
| url | http://dx.doi.org/10.1155/2019/5367349 |
| work_keys_str_mv | AT natashasharma thermodynamiclimitinhighmultiplicityprotonprotoncollisionsats7tev AT jeancleymans thermodynamiclimitinhighmultiplicityprotonprotoncollisionsats7tev AT borishippolyte thermodynamiclimitinhighmultiplicityprotonprotoncollisionsats7tev |