Volltext verfügbar nach Anmeldung bzw. im Campus-Netz.
Prospects for Bc+ and B+→τ+ντ at FCC-ee.
In: European Physical Journal C -- Particles & Fields, Jg. 84 (2024), Heft 1, S. 1-28
Online
academicJournal
Zugriff:
The prospects are presented for precise measurements of the branching ratios of the purely leptonic B c + → τ + ν τ and B + → τ + ν τ decays at the Future Circular Collider (FCC). This work is focused on the hadronic τ + → π + π + π - ν ¯ τ decay in both B c + → τ + ν τ and B + → τ + ν τ processes. Events are selected with two Boosted Decision Tree algorithms to optimise the separation between the two signal processes as well as the generic hadronic Z decay backgrounds. The range of the expected precision for both signals are evaluated in different scenarios of non-ideal background modelling. This paper demonstrates, for the first time, that the B + → τ + ν τ decay can be well separated from both B c + → τ + ν τ and generic Z → b b ¯ processes in the FCC-ee collision environment and proposes the corresponding branching ratio measurement as a novel way to determine the CKM matrix element | V ub | . The theoretical impacts of both B + → τ + ν τ and B c + → τ + ν τ measurements on New Physics cases are discussed for interpretations in the generic Two-Higgs-doublet model and leptoquark models. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Titel: |
Prospects for Bc+ and B+→τ+ντ at FCC-ee.
|
---|---|
Autor/in / Beteiligte Person: | Zuo, Xunwu ; Fedele, Marco ; Helsens, Clément ; Hill, Donal ; Iguro, Syuhei ; Klute, Markus |
Link: | |
Zeitschrift: | European Physical Journal C -- Particles & Fields, Jg. 84 (2024), Heft 1, S. 1-28 |
Veröffentlichung: | 2024 |
Medientyp: | academicJournal |
ISSN: | 1434-6044 (print) |
DOI: | 10.1140/epjc/s10052-024-12418-0 |
Schlagwort: |
|
Sonstiges: |
|