Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC
In this paper, the top quark pair production events are analyzed as a source of neutral Higgs bosons of the two Higgs doublet model type I at LHC. The production mechanism is pp→H/A→tt¯ assuming a fully hadronic final state through t→Wb→jjb. In order to distinguish the signal from the main backgroun...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/4038243 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832564003237265408 |
|---|---|
| author | Majid Hashemi Mahbobeh Jafarpour |
| author_facet | Majid Hashemi Mahbobeh Jafarpour |
| author_sort | Majid Hashemi |
| collection | DOAJ |
| description | In this paper, the top quark pair production events are analyzed as a source of neutral Higgs bosons of the two Higgs doublet model type I at LHC. The production mechanism is pp→H/A→tt¯ assuming a fully hadronic final state through t→Wb→jjb. In order to distinguish the signal from the main background which is the standard model tt¯, we benefit from the fact that the top quarks in signal events acquire large Lorentz boost due to the heavy neutral Higgs boson. This feature leads to three collinear jets (a fat jet) which is a discriminating tool for identification of the top quarks from the Higgs boson resonances. Events with two identified top jets are selected and the invariant mass of the top pair is calculated for both signal and background. It is shown that the low tan β region has still some parts which can be covered by this analysis and has not yet been excluded by flavor physics data. |
| format | Article |
| id | doaj-art-a6cf39c56a5b4bfd9f55bf6f6344e1c3 |
| institution | Kabale University |
| issn | 1687-7357 1687-7365 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in High Energy Physics |
| spelling | doaj-art-a6cf39c56a5b4bfd9f55bf6f6344e1c32025-02-03T01:12:08ZengWileyAdvances in High Energy Physics1687-73571687-73652018-01-01201810.1155/2018/40382434038243Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHCMajid Hashemi0Mahbobeh Jafarpour1Physics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, IranPhysics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, IranIn this paper, the top quark pair production events are analyzed as a source of neutral Higgs bosons of the two Higgs doublet model type I at LHC. The production mechanism is pp→H/A→tt¯ assuming a fully hadronic final state through t→Wb→jjb. In order to distinguish the signal from the main background which is the standard model tt¯, we benefit from the fact that the top quarks in signal events acquire large Lorentz boost due to the heavy neutral Higgs boson. This feature leads to three collinear jets (a fat jet) which is a discriminating tool for identification of the top quarks from the Higgs boson resonances. Events with two identified top jets are selected and the invariant mass of the top pair is calculated for both signal and background. It is shown that the low tan β region has still some parts which can be covered by this analysis and has not yet been excluded by flavor physics data.http://dx.doi.org/10.1155/2018/4038243 |
| spellingShingle | Majid Hashemi Mahbobeh Jafarpour Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC Advances in High Energy Physics |
| title | Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC |
| title_full | Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC |
| title_fullStr | Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC |
| title_full_unstemmed | Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC |
| title_short | Analysis of Top Quark Pair Production Signal from Neutral 2HDM Higgs Bosons at LHC |
| title_sort | analysis of top quark pair production signal from neutral 2hdm higgs bosons at lhc |
| url | http://dx.doi.org/10.1155/2018/4038243 |
| work_keys_str_mv | AT majidhashemi analysisoftopquarkpairproductionsignalfromneutral2hdmhiggsbosonsatlhc AT mahbobehjafarpour analysisoftopquarkpairproductionsignalfromneutral2hdmhiggsbosonsatlhc |