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

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

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Mikael Chala

Maria Ramos


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.


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.

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


Published Journal Article (925 Kb)

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Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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