An imperative study of the angular observables in Λ b → Λ c + → Λ π + ℓ − ν ¯ ℓ $$ {\Lambda}_b\to {\Lambda}_c^{+}\left(\to \Lambda {\pi}^{+}\right){\ell}^{-}{\overline{\nu}}_{\ell } $$ decay and probing the footprint of new physics

Autor: Soumitra Nandi, Shantanu Sahoo, Ria Sain

Publikováno v: Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-59 (2024)

Abstract We study the four-fold angular distribution of the semileptonic Λ b → Λ c + → Λ π + ℓ − ν ¯ ℓ $$ {\Lambda}_b\to {\Lambda}_c^{+}\left(\to \Lambda {\pi}^{+}\right){\ell}^{-}{\overline{\nu}}_{\ell } $$ decay and find out analyti

Externí odkaz: https://doaj.org/article/0bf992bccb4a4af0be48646f125c4986

Flavour bounds on the flavon of a minimal and a non-minimal $${\mathcal {Z}}_2 \times {\mathcal {Z}}_N$$ Z 2 × Z N symmetry

Autor: Gauhar Abbas, Vartika Singh, Neelam Singh, Ria Sain

Publikováno v: European Physical Journal C: Particles and Fields, Vol 83, Iss 4, Pp 1-25 (2023)

Abstract We investigate flavour bounds on the $${\mathcal {Z}}_2 \times {\mathcal {Z}}_5$$ Z 2 × Z 5 and $${\mathcal {Z}}_2 \times {\mathcal {Z}}_9$$ Z 2 × Z 9 flavour symmetries. These flavour symmetries are a minimal and a non-minimal forms of th

Externí odkaz: https://doaj.org/article/76b4d4a84c8645528294deaa3a10dc08

Polarized Λb baryon decay to pπ and a dilepton pair

Autor: Diganta Das, Ria Sain

Publikováno v: Physical Review D. 104

The recent anomalies in $b\ensuremath{\rightarrow}s{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ transitions could originate from some new physics beyond the Standard Model. Either to confirm or to rule out this assumption, more tests

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1b87ee3265deb8f1765fb54311dc6dcd
https://doi.org/10.1103/physrevd.104.013002

Radiative b-baryon decays to measure the photon and b-baryon polarization

Autor: A. Oyanguren, Fernando Martinez Vidal, Rahul Sinha, Ria Sain, Shibasis Roy, Brij Jashal, Luis Miguel Garcia Martin

Publikováno v: European Physical Journal C: Particles and Fields, Vol 79, Iss 7, Pp 1-10 (2019)
European Physical Journal
Digital.CSIC. Repositorio Institucional del CSIC
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The radiative decays of b-baryons facilitate the direct measurement of photon helicity in b→sγ transitions thus serving as an important test of physics beyond the Standard Model. In this paper we analyze the complete angular distribution of ground

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c37b3f26088a0ef2ca3c1658eeda50a5
http://hdl.handle.net/10261/194186

Lepton mass effects and angular observables in Λb→Λ(→pπ)ℓ+ℓ−

Autor: Ria Sain, Rahul Sinha, Shibasis Roy

Publikováno v: Physical Review D. 96

The flavor-changing rare decay $B\ensuremath{\rightarrow}{K}^{*}(\ensuremath{\rightarrow}K\ensuremath{\pi}){\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ is one of the most studied modes due to its sensitivity to physics beyond the stan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::abff722bd4217736778c7896cd1f9ee4
https://doi.org/10.1103/physrevd.96.116005