Addressing the RD(*) anomalies with an S1 leptoquark from SO(10) grand unification

被引：52

作者：

Aydemir, Ufuk ^{[1
,2
]}

Mandal, Tanumoy ^{[3
,4
]}

Mitra, Subhadip ^{[5
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China

[3] Uppsala Univ, Dept Phys & Astron, Box 516, SE-75120 Uppsala, Sweden

[4] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

[5] Int Inst Informat Technol, Ctr Computat Nat Sci & Bioinformat, Hyderabad 500032, Telangana, India

来源：

PHYSICAL REVIEW D | 2020年 / 101卷 / 01期

基金：

中国国家自然科学基金;

关键词：

UNIVERSALITY VIOLATION; COUPLING UNIFICATION; BREAKING; NUMBER;

D O I：

10.1103/PhysRevD.101.015011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Motivated by the R-D(*) anomalies, we investigate an SO(10) grand unification scenario where a charge -1/3 scalar leptoquark (S-1) remains as the only new physics candidate at the TeV scale. This leptoquark along with the Standard Model (SM) Higgs doublet originates from the same ten-dimensional real scalar multiplet in the SO(10) grand unification framework taking its mass close to the electroweak scale. We explicitly show how the gauge coupling unification is achieved with only one intermediate symmetrybreaking scale at which the Pati-Salam gauge group is broken into the SM group. We investigate the phenomenological implications of our scenario and show that an S-1 with a specific Yukawa texture can explain the R-D(*) anomalies. We perform a multiparameter scan considering the relevant flavor constraints on R-D(*), F-L(D*), P-tau(D*) and R-K(*)(vv) as well as the constraint coming from the Z -> tau tau decay and the latest Dr resonance search data at the LHC. Our analysis shows that a single leptoquark solution to the observed R-D(*) anomalies with S-1 is still a viable solution.

引用

页数：20

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