Novel B-decay signatures of light scalars at high energy facilities

Blance, Andrew; Chala, Mikael; Ramos, Maria; Spannowsky, Michael

doi:10.1103/physrevd.100.115015

Novel B-decay signatures of light scalars at high energy facilities

Blance, Andrew; Chala, Mikael; Ramos, Maria; Spannowsky, Michael

Authors

Andrew Tulloch Blance andrew.t.blance@durham.ac.uk
PGR Student Doctor of Philosophy

Mikael Chala

Maria Ramos

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

Abstract

We study the phenomenology of light scalars of masses m1 and m2 coupling to heavy flavor-violating vector bosons of mass mV. For m1;2 ≲ few GeV, this scenario triggers the rare B meson decays B0s → 3μþ3μ−, B0 → 3μþ3μ−, Bþ → Kþ3μþ3μ−, and B0s → K03μþ3μ−; the last two being the most important ones for m1 ∼ m2. None of these signals have been studied experimentally; therefore, we propose analyses to test these channels at the LHCb. We demonstrate that the reach of this facility extends to branching ratios as small as 6.0 × 10−9, 1.6 × 10−9, 5.9 × 10−9, and 1.8 × 10−8 for the aforementioned channels, respectively. For m1;2 ≫ Oð1Þ GeV, we show that slightly modified versions of current multilepton and multitau searches at the LHC can probe wide regions of the parameter space of this scenario. Altogether, the potential of the searches we propose outperform other constraints such as those from meson mixing.

Citation

Blance, A., Chala, M., Ramos, M., & Spannowsky, M. (2019). Novel B-decay signatures of light scalars at high energy facilities. Physical Review D, 100(11), Article 115015. https://doi.org/10.1103/physrevd.100.115015

Journal Article Type	Article
Online Publication Date	Dec 6, 2019
Publication Date	Dec 1, 2019
Deposit Date	Dec 10, 2019
Publicly Available Date	Dec 10, 2019
Journal	Physical Review D
Print ISSN	2470-0010
Electronic ISSN	2470-0029
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	100
Issue	11
Article Number	115015
DOI	https://doi.org/10.1103/physrevd.100.115015

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