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of 33
pro vyhledávání: '"Roy, Shibasis"'
Recent anomalies in $B$-meson decays, such as deviations in $R_{D^{(*)}}$ and $B\to K\nu{\bar\nu}$, suggest possible lepton flavor universality violation and new exotic interactions. In this work, we explore these anomalies within a non-minimal SU(5)
Externí odkaz:
http://arxiv.org/abs/2412.16115
Autor:
Altmannshofer, Wolfgang, Roy, Shibasis
In light of the recent branching fraction measurement of the $B^{+}\to K^{+} \nu\bar{\nu}$ decay by Belle II and its poor agreement with the SM expectation, we analyze the effects of an axion-like particle (ALP) in $B$ meson decays. We assume a long-
Externí odkaz:
http://arxiv.org/abs/2411.06592
The observation of CP violation in meson decays is a testament to the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing paradigm, and an integral part of the Standard Model (SM). The SM also predicts the existence of CP violation in baryon decays that is
Externí odkaz:
http://arxiv.org/abs/2303.02591
One of the outstanding problems in physics is to explain the baryon-anti-baryon asymmetry observed in nature. According to the well-known Sakharov criterion for explaining the observed asymmetry, it is essential that $CP$ violation exist. Even though
Externí odkaz:
http://arxiv.org/abs/2109.10751
The Standard Model (SM) predicts that $\Delta A_{\rm CP}$, the difference between the direct CP asymmetries for the modes $B^+\to \pi^0 K^+$ and $B^0\to \pi^- K^+$ that are related by weak isospin, should be close to zero. There has been a recent cla
Externí odkaz:
http://arxiv.org/abs/2106.15633
Publikováno v:
Phys. Rev. D 102, 053007 (2020)
We consider charmless weak decays of beauty-baryons into decuplet baryons and pseudoscalar mesons in a general framework based on $SU(3)$-flavor decomposition of the decay amplitudes. The dynamical assumption independent $SU(3)$ analysis accounts for
Externí odkaz:
http://arxiv.org/abs/2006.16813
Publikováno v:
Phys. Rev. D 101, 036018 (2020)
We consider hadronic weak decays of beauty-baryons into charmless baryons and pseudoscalar mesons in a general framework based on $SU(3)$ decomposition of the decay amplitudes. The advantage of the approach lies in the ability to perform an $SU(3)$ a
Externí odkaz:
http://arxiv.org/abs/1911.01121
Autor:
Martín, Luis Miguel García, Jashal, Brij, Vidal, Fernando Martínez, Oyanguren, Arantza, Roy, Shibasis, Sain, Ria, Sinha, Rahul
The radiative decays of $b$-baryons facilitate the direct measurement of photon helicity in $b\to s\gamma$ transitions thus serving as an important test of physics beyond the Standard Model. In this paper we analyze the complete angular distribution
Externí odkaz:
http://arxiv.org/abs/1902.04870
Publikováno v:
Phys. Rev. D 96, 116005 (2017)
The flavor changing rare decay $B\to K^{*}(\to K\pi)\ell^+\ell^-$ is one of the most studied modes due to its sensitivity to physics beyond the standard model and several discrepancies have come to light among the plethora of observables that are mea
Externí odkaz:
http://arxiv.org/abs/1710.01335
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