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Searching for anomalous top quark interactions with proton tagging and timing detectors at the LHC.
- Source :
-
Journal of High Energy Physics . 8/1/2022, Vol. 2022 Issue 8, p1-23. 23p. - Publication Year :
- 2022
-
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 ¯ . This is probed in central exclusive t t ¯ production in proton-proton collisions, pp → pt t ¯ p . We use the tagging of the intact protons by PPS (CMS) and AFP (ATLAS) and consider the semi-leptonic t t ¯ channel. The sensitivity is also mapped onto a set of dimension-8 γγt t ¯ operators in the large mass limit. Using the kinematical correlations between the intact protons and the reconstructed t 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *TOP quarks
*PROTON-proton interactions
*DETECTORS
*QUARK decay
*PROTONS
Subjects
Details
- Language :
- English
- ISSN :
- 11266708
- Volume :
- 2022
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- 159100348
- Full Text :
- https://doi.org/10.1007/JHEP08(2022)021