Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC
Abstract We study the LHC sensitivity to new broad neutral resonances produced in two-photon fusion and decaying to a top quark pair, γγ → t t ¯ $$ t\overline{t} $$ . This is probed in central exclusive t t ¯ $$ t\overline{t} $$ production in proton-proton collisions, pp → pt t ¯ p $$ pt\overline{t}...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP08(2022)021 |
| _version_ | 1811342823198294016 |
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| author | Cristian Baldenegro Andrea Bellora Sylvain Fichet Gero von Gersdorff Michael Pitt Christophe Royon |
| author_facet | Cristian Baldenegro Andrea Bellora Sylvain Fichet Gero von Gersdorff Michael Pitt Christophe Royon |
| author_sort | Cristian Baldenegro |
| collection | DOAJ |
| description | Abstract We study the LHC sensitivity to new broad neutral resonances produced in two-photon fusion and decaying to a top quark pair, γγ → t t ¯ $$ t\overline{t} $$ . This is probed in central exclusive t t ¯ $$ t\overline{t} $$ production in proton-proton collisions, pp → pt t ¯ p $$ pt\overline{t}p $$ . We use the tagging of the intact protons by PPS (CMS) and AFP (ATLAS) and consider the semi-leptonic t t ¯ $$ t\overline{t} $$ channel. The sensitivity is also mapped onto a set of dimension-8 γγt t ¯ $$ \gamma \gamma t\overline{t} $$ operators in the large mass limit. Using the kinematical correlations between the intact protons and the reconstructed t t ¯ $$ t\overline{t} $$ system, we obtain a sensitivity to the couplings of the dimension-8 operators of 1.4 10 −11 GeV −4 at 95% CL. The sensitivity to the anomalous couplings is significantly improved down to about 7 10 −12 GeV −4 if the proton time-of-flight is known with a precision of 20 ps in future measurements. The 95% CL sensitivity to broad neutral resonances reaches masses of order 1500 GeV when using timing information. |
| first_indexed | 2024-04-13T19:17:48Z |
| format | Article |
| id | doaj.art-433f64d85ce5448594b3f3241429792b |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-13T19:17:48Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-433f64d85ce5448594b3f3241429792b2022-12-22T02:33:37ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022812310.1007/JHEP08(2022)021Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHCCristian Baldenegro0Andrea Bellora1Sylvain Fichet2Gero von Gersdorff3Michael Pitt4Christophe Royon5Laboratoire Leprince-Ringuet, École PolytechniqueINFN Sezione di Torino and Università degli Studi di TorinoICTP South American Institute for Fundamental Research & IFT, UNESPDepartamento de Fısica, Pontifıcia Universidade Católica do Rio de JaneiroCERNDepartment of Physics and Astronomy, The University of KansasAbstract We study the LHC sensitivity to new broad neutral resonances produced in two-photon fusion and decaying to a top quark pair, γγ → t t ¯ $$ t\overline{t} $$ . This is probed in central exclusive t t ¯ $$ t\overline{t} $$ production in proton-proton collisions, pp → pt t ¯ p $$ pt\overline{t}p $$ . We use the tagging of the intact protons by PPS (CMS) and AFP (ATLAS) and consider the semi-leptonic t t ¯ $$ t\overline{t} $$ channel. The sensitivity is also mapped onto a set of dimension-8 γγt t ¯ $$ \gamma \gamma t\overline{t} $$ operators in the large mass limit. Using the kinematical correlations between the intact protons and the reconstructed t t ¯ $$ t\overline{t} $$ system, we obtain a sensitivity to the couplings of the dimension-8 operators of 1.4 10 −11 GeV −4 at 95% CL. The sensitivity to the anomalous couplings is significantly improved down to about 7 10 −12 GeV −4 if the proton time-of-flight is known with a precision of 20 ps in future measurements. The 95% CL sensitivity to broad neutral resonances reaches masses of order 1500 GeV when using timing information.https://doi.org/10.1007/JHEP08(2022)021Axions and ALPsOther Weak Scale BSM ModelsSpecific BSM Phenomenol- ogyTop Quark |
| spellingShingle | Cristian Baldenegro Andrea Bellora Sylvain Fichet Gero von Gersdorff Michael Pitt Christophe Royon Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC Journal of High Energy Physics Axions and ALPs Other Weak Scale BSM Models Specific BSM Phenomenol- ogy Top Quark |
| title | Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC |
| title_full | Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC |
| title_fullStr | Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC |
| title_full_unstemmed | Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC |
| title_short | Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC |
| title_sort | searching for anomalous top quark interactions with proton tagging and timing detectors at the lhc |
| topic | Axions and ALPs Other Weak Scale BSM Models Specific BSM Phenomenol- ogy Top Quark |
| url | https://doi.org/10.1007/JHEP08(2022)021 |
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