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LHC searches motivated by recent $B$-anomalies
by Darius Alexander Faroughy
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Submission summary
| Authors (as registered SciPost users): | Darius Faroughy |
| Submission information | |
|---|---|
| Preprint Link: | scipost_201811_00031v1 (pdf) |
| Date submitted: | 2018-11-19 01:00 |
| Submitted by: | Faroughy, Darius |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | The 15th International Workshop on Tau Lepton Physics (TAU2018) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We discuss the physics case for the LHC motivated by the $B$-physics anomalies. After correlating semi-tauonic $B$ decays to di-tau production at the LHC, and discussing the possible models solving the $B$-anomalies, we show how existing LHC data in $\tau\bar\tau$ tails exclude most beyond the SM scenarios except for a handful of leptoquark (LQ) models. We analyze the impact of LHC searches for some of these LQ solutions using current data. In particular, we focus on the well known $U_1$ vector LQ as well as the GUT-inspired scalar LQs, $R_2$ and $S_3$. By exploiting the complementarity between di-tau searches and the lepton flavor violating decays $B\to K\mu\tau$ and $\tau\to\mu\phi$ we argue that these model can be cornered by the LHC, Belle~II and LHCb in the near future.
Current status:
Reports on this Submission
Report #1 by Anonymous (Referee 1) on 2018-12-6 (Invited Report)
- Cite as: Anonymous, Report on arXiv:scipost_201811_00031v1, delivered 2018-12-06, doi: 10.21468/SciPost.Report.709
Strengths
The manuscript is very nice and well written.
Motivated by the tantalizing discrepancies with the SM observed in B mesons decays, it verifies which models candidate to explain the B-anomalies are also compatible with the result of the searches for high mass particles at the LHC.
It finds, for that only few LQ models pass the test of the data and discuss perspective for end of LHC Run 2, Run 3 and HL-LHC.
Weaknesses
Nothing significant
Report
The manuscript discusses the models that can possibly explain the discrepancies with the SM observed in B mesons decays.
The author analyze the implication of the results of the LHC searches for high mass resonances on those models.
In particular the search for heavy neutral particles decaying in two taus final state is analyzed and the results of the ATLAS search for Z' ->tautau final state is reinterpreted in terms of limits on LQ particles which would contribute to the tautau final state via t-channel exchange of a LQ (non-resonant final state).
In addition, exploiting complementary constraints coming from LHC heavy mass particle searches and searches for LFV decays of the B and tau particles, it would be possible to limit further the LQ parameter space in the near future.
Requested changes
1- Small typographic changes requested to the author.