Searching for and exploring double-parton scattering effects in four-jet production at the LHC
We discuss four-jet production at the LHC. We calculate cross section for both single-parton scattering (SPS) using the ALPGEN code and for double-parton scattering (DPS) in leading-order collinear approach. Our results are compared with experimental data obtained recently by the CMS Collaboration....
| Main Authors: | , |
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| 格式: | 文件 |
| 语言: | English |
| 出版: |
Elsevier
2015-10-01
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| 丛编: | Physics Letters B |
| 在线阅读: | http://www.sciencedirect.com/science/article/pii/S0370269315005456 |
| _version_ | 1828848281832128512 |
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| author | Rafał Maciuła Antoni Szczurek |
| author_facet | Rafał Maciuła Antoni Szczurek |
| author_sort | Rafał Maciuła |
| collection | DOAJ |
| description | We discuss four-jet production at the LHC. We calculate cross section for both single-parton scattering (SPS) using the ALPGEN code and for double-parton scattering (DPS) in leading-order collinear approach. Our results are compared with experimental data obtained recently by the CMS Collaboration. We show that the ALPGEN code relatively well describes distributions in transverse momenta and rapidity of each of the four jets ordered by their transverse momenta (leading, subleading, etc.). The SPS mechanism does not explain the distributions at large rapidity for the leading jet. The DPS mechanism improves the agreement with the experimental data in this corner of the phase space. In order to enhance the relative DPS contribution we propose to impose different cuts. The relative DPS contribution increases when decreasing the lower cut on the jet transverse momenta as well as when a low lower cut on the rapidity distance between the most remote jets is imposed. We predict very flat distribution in azimuthal angle between the most remote jets with low lower cuts on jets transverse momentum. We find phase-space corners where the DPS content is enhanced relatively to the SPS one. |
| first_indexed | 2024-12-12T22:26:48Z |
| format | Article |
| id | doaj.art-6b51c4658be94e70b0e1ccc456d0da98 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-12T22:26:48Z |
| publishDate | 2015-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-6b51c4658be94e70b0e1ccc456d0da982022-12-22T00:09:43ZengElsevierPhysics Letters B0370-26931873-24452015-10-01749C576210.1016/j.physletb.2015.07.035Searching for and exploring double-parton scattering effects in four-jet production at the LHCRafał MaciułaAntoni SzczurekWe discuss four-jet production at the LHC. We calculate cross section for both single-parton scattering (SPS) using the ALPGEN code and for double-parton scattering (DPS) in leading-order collinear approach. Our results are compared with experimental data obtained recently by the CMS Collaboration. We show that the ALPGEN code relatively well describes distributions in transverse momenta and rapidity of each of the four jets ordered by their transverse momenta (leading, subleading, etc.). The SPS mechanism does not explain the distributions at large rapidity for the leading jet. The DPS mechanism improves the agreement with the experimental data in this corner of the phase space. In order to enhance the relative DPS contribution we propose to impose different cuts. The relative DPS contribution increases when decreasing the lower cut on the jet transverse momenta as well as when a low lower cut on the rapidity distance between the most remote jets is imposed. We predict very flat distribution in azimuthal angle between the most remote jets with low lower cuts on jets transverse momentum. We find phase-space corners where the DPS content is enhanced relatively to the SPS one.http://www.sciencedirect.com/science/article/pii/S0370269315005456 |
| spellingShingle | Rafał Maciuła Antoni Szczurek Searching for and exploring double-parton scattering effects in four-jet production at the LHC Physics Letters B |
| title | Searching for and exploring double-parton scattering effects in four-jet production at the LHC |
| title_full | Searching for and exploring double-parton scattering effects in four-jet production at the LHC |
| title_fullStr | Searching for and exploring double-parton scattering effects in four-jet production at the LHC |
| title_full_unstemmed | Searching for and exploring double-parton scattering effects in four-jet production at the LHC |
| title_short | Searching for and exploring double-parton scattering effects in four-jet production at the LHC |
| title_sort | searching for and exploring double parton scattering effects in four jet production at the lhc |
| url | http://www.sciencedirect.com/science/article/pii/S0370269315005456 |
| work_keys_str_mv | AT rafałmaciuła searchingforandexploringdoublepartonscatteringeffectsinfourjetproductionatthelhc AT antoniszczurek searchingforandexploringdoublepartonscatteringeffectsinfourjetproductionatthelhc |