Zobrazeno 1 - 10
of 141
pro vyhledávání: '"S. Uma Sankar"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-28 (2023)
Abstract We study the constraints on the doublet left-right symmetric model (DLRSM) arising due to the Higgs data. The SU(2) L symmetry of this model is broken by three vacuum expectation values, κ 1, κ 2 and v L . Most studies of this model assume
Externí odkaz:
https://doaj.org/article/7e74287fce4a4c5fb5b0d1848601f9f7
Publikováno v:
Nuclear Physics B, Vol 985, Iss , Pp 116009- (2022)
We consider an U(1)Lμ−Lτ extended left-right symmetric gauge theory where the neutrino masses are generated through inverse seesaw mechanism. In this model the muon (g−2) anomaly is accounted for by the mediation of Zμτ, the gauge boson of U(
Externí odkaz:
https://doaj.org/article/8c17ccc73387482e9b83398fc00d12c5
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 5, Pp 1-10 (2021)
Abstract We study the charged lepton flavour violation in a popular neutrino mass model with $$A_4$$ A 4 discrete symmetry. This symmetry requires the presence of multiple Higgs doublets in the model and it also dictates the flavour violating Yukawa
Externí odkaz:
https://doaj.org/article/ffa9875090cc4e5182c46d060eed3485
Publikováno v:
Nuclear Physics B, Vol 967, Iss , Pp 115419- (2021)
The lepton universality violating flavor ratios RK/RK⁎ indicate new physics either in b→sμ+μ− or in b→se+e− or in both. If the new physics is only b→se+e− transition, the corresponding new physics operators, in principle, can have any
Externí odkaz:
https://doaj.org/article/e9621e4181fe4073b8417b943aef3794
Publikováno v:
Nuclear Physics B, Vol 962, Iss , Pp 115268- (2021)
Both neutrinoless double beta decay and leptogenesis require neutrinos to be Majorana fermions. A relation between these two phenomena can be derived once the mechanism of neutrino mass generation is specified. Using the current data from the neutrin
Externí odkaz:
https://doaj.org/article/fd84bbbefc2940e29170c66fd11c5ae1
Publikováno v:
Nuclear Physics B, Vol 953, Iss , Pp - (2020)
Earlier this year, the Belle collaboration presented their new measurements of RD and RD⁎ using a new method. These measurements are consistent with the Standard Model predictions, whereas the global averages of the earlier measurements had a 4.1σ
Externí odkaz:
https://doaj.org/article/783c5d6a288f418b86a45135425a3e63
Autor:
Javid Naikoo, Ashutosh Kumar Alok, Subhashish Banerjee, S. Uma Sankar, Giacomo Guarnieri, Christiane Schultze, Beatrix C. Hiesmayr
Publikováno v:
Nuclear Physics B, Vol 951, Iss , Pp - (2020)
In this work, we derive a quantum information theoretic quantity similar to the Leggett-Garg inequality, which can be defined in terms of neutrino transition probabilities. For the case of νμ→νe/ν¯μ→ν¯e transitions, this quantity is sensi
Externí odkaz:
https://doaj.org/article/362eb95a5cf048a0a84e07938f0e1709
Publikováno v:
Physics Letters B, Vol 784, Iss , Pp 16-20 (2018)
One of the exciting results in flavor physics in recent times is the RD/RD⁎ puzzle. The measurements of these flavor ratios performed by the B-factory experiments, BaBar and Belle, and the LHCb experiment are about 4σ away from the Standard Model
Externí odkaz:
https://doaj.org/article/2caefe8ac9344b5b96776252ee64befc
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 9, Pp 1-19 (2018)
Abstract Recent measurements of R D∗ have reduced tension with the Standard Model prediction. Taking all the present data into account, we obtain the values of the Wilson coefficients of each new physics four-fermion operator of a given Lorentz str
Externí odkaz:
https://doaj.org/article/7c0067eb6bd7404ba12b045bed89aef1
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 9, Pp 1-17 (2018)
Abstract The combined analysis of ν μ disappearance and ν e appearance data of NOνA experiment leads to three nearly degenerate solutions. This degeneracy can be understood in terms of deviations in νe appearance signal, caused by unknown effect
Externí odkaz:
https://doaj.org/article/83a4772ae5c742eaa837069aadc7333e