Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC
We investigate the prospect of discovering the SU(2) singlet vector-like bottom quark (VLQ-B) in e+e− collisions at future Compact Linear Collider (CLIC) at the 3 TeV stage. As signal process, we focus on single production of the VLQ-B with 4b final state, namely, e+e−→Bb¯→hbb¯ followed by h→bb¯. By...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2021-05-01
|
| Series: | Nuclear Physics B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0550321321000857 |
| id |
doaj-09d463d9485344ae95a352d8b07d99c1 |
|---|---|
| record_format |
Article |
| spelling |
doaj-09d463d9485344ae95a352d8b07d99c12021-04-28T06:08:24ZengElsevierNuclear Physics B0550-32132021-05-01966115388Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLICXin Qin0Jie-Fen Shen1School of Biomedical Engineering, Xinxiang Medical University, Xinxiang 453003, ChinaCorresponding author.; School of Biomedical Engineering, Xinxiang Medical University, Xinxiang 453003, ChinaWe investigate the prospect of discovering the SU(2) singlet vector-like bottom quark (VLQ-B) in e+e− collisions at future Compact Linear Collider (CLIC) at the 3 TeV stage. As signal process, we focus on single production of the VLQ-B with 4b final state, namely, e+e−→Bb¯→hbb¯ followed by h→bb¯. By carrying out a full detector simulation for the signals and the relevant SM backgrounds, the 2σ exclusion limit and 5σ discovery prospects are, respectively, obtained on the coupling strength κB and the integrated luminosity. For the medium (loose) working point with 70% (90%) b-tagging efficiency, the VLQ-B quark can be excluded in the region of κB∈[0.125,0.24][0.09,0.15] and mB∈[1.3,2.0] TeV, while the discovered region can reach to κB∈[0.19,0.32]([0.14,0.24]). Finally, we also analyze the projected sensitivity in terms of the production cross section times branching fraction at the future 3 TeV CLIC.http://www.sciencedirect.com/science/article/pii/S0550321321000857 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Xin Qin Jie-Fen Shen |
| spellingShingle |
Xin Qin Jie-Fen Shen Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC Nuclear Physics B |
| author_facet |
Xin Qin Jie-Fen Shen |
| author_sort |
Xin Qin |
| title |
Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC |
| title_short |
Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC |
| title_full |
Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC |
| title_fullStr |
Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC |
| title_full_unstemmed |
Search for single production of vector-like B quark decaying to a Higgs boson and bottom quark at the CLIC |
| title_sort |
search for single production of vector-like b quark decaying to a higgs boson and bottom quark at the clic |
| publisher |
Elsevier |
| series |
Nuclear Physics B |
| issn |
0550-3213 |
| publishDate |
2021-05-01 |
| description |
We investigate the prospect of discovering the SU(2) singlet vector-like bottom quark (VLQ-B) in e+e− collisions at future Compact Linear Collider (CLIC) at the 3 TeV stage. As signal process, we focus on single production of the VLQ-B with 4b final state, namely, e+e−→Bb¯→hbb¯ followed by h→bb¯. By carrying out a full detector simulation for the signals and the relevant SM backgrounds, the 2σ exclusion limit and 5σ discovery prospects are, respectively, obtained on the coupling strength κB and the integrated luminosity. For the medium (loose) working point with 70% (90%) b-tagging efficiency, the VLQ-B quark can be excluded in the region of κB∈[0.125,0.24][0.09,0.15] and mB∈[1.3,2.0] TeV, while the discovered region can reach to κB∈[0.19,0.32]([0.14,0.24]). Finally, we also analyze the projected sensitivity in terms of the production cross section times branching fraction at the future 3 TeV CLIC. |
| url |
http://www.sciencedirect.com/science/article/pii/S0550321321000857 |
| work_keys_str_mv |
AT xinqin searchforsingleproductionofvectorlikebquarkdecayingtoahiggsbosonandbottomquarkattheclic AT jiefenshen searchforsingleproductionofvectorlikebquarkdecayingtoahiggsbosonandbottomquarkattheclic |
| _version_ |
1721503977211691008 |