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15 papers · 2 filters
Quantum evolution of quarkonia with correlated and uncorrelated noise
Rishi Sharma, Anurag Tiwari
In the quark-gluon plasma (QGP), it is well known that the evolution of quarkonia is affected by the screening of the interaction between the quark and the anti-quark. In addition,…
Predictions for in non-universal models
Ashutosh Kumar Alok, Amol Dighe, Shireen Gangal +1
The lepton flavor universality violating (LFUV) measurements and in meson decays can be accounted for in non-universal models. We constrain the couplings o…
Neutrino and Positron Constraints on Spinning Primordial Black Hole Dark Matter
Basudeb Dasgupta, Ranjan Laha, Anupam Ray
Primordial black holes can have substantial spin -- a fundamental property that has a strong effect on its evaporation rate. We conduct a comprehensive study of the detectability o…
Galactic Positron Excess from Selectively Enhanced Dark Matter Annihilation
Anirban Das, Basudeb Dasgupta, Anupam Ray
Precision measurements of the positron flux in cosmic ray have revealed an unexplained bump in the spectrum around , not clearly attributable to known as…
Roper State from Overlap Fermions
Mingyang Sun, Ying Chen, Gen Wang +11
The Roper state is extracted with valence overlap fermions on a -flavor domain-wall fermion lattice (spacing fm and MeV) using both the Sequential Empi…
Jets with electrons from boosted top quarks
Suman Chatterjee, Rohini Godbole, Tuhin S. Roy
We propose a method to identify jets consisting of all the visible remnants of boosted top particles when these decay semileptonically to electrons. Within these jets, the electron…
KK Higgs produced in association with a top quark pair in the bulk RS Model
N. Manglani, A. Misra, K. Sridhar
We present a search strategy for the first Kaluza-Klein (KK) mode of the Higgs boson in the framework of the Randall-Sundrum (RS) model with a deformed metric. We study the product…
Dark Neutrino interactions phase out the Hubble tension
Subhajit Ghosh, Rishi Khatri, Tuhin S. Roy
New interactions of neutrinos can stop them from free streaming even after the weak interaction freeze-out. This results in a phase shift in the cosmic microwave background (CMB) a…
Matter vs Vacuum oscillations in Atmospheric Neutrinos
Mohammad Nizam, Jaydeep Datta, Ali Ajmi +1
Atmospheric neutrinos travel very long distances through earth matter. It is expected that the matter effects lead to significant changes in the neutrino survival and oscillation p…
Dark matter capture in celestial objects: Improved treatment of multiple scattering and updated constraints from white dwarfs
Basudeb Dasgupta, Aritra Gupta, Anupam Ray
We revisit dark matter (DM) capture in celestial objects, including the impact of multiple scattering, and obtain updated constraints on the DM-proton cross section using observati…
A radiatively generated source of flavor universal scalar soft masses
Sabyasachi Chakraborty, Tuhin S. Roy
We report that models of electroweak supersymmetry with gaugino mass unification and sequestered scalar masses can still produce viable spectra, as long as we include a set of non-…
Continuing search for new physics in decays: two operators at a time
Ashutosh Kumar Alok, Amol Dighe, Shireen Gangal +1
The anomalies in the measurements of observables involving decays, namely , , , and , may be addressed by adding lepton-universality…
Radiative -baryon decays to measure the photon and -baryon polarization
Luis Miguel García Martín, Brij Jashal, Fernando Martínez Vidal +4
The radiative decays of -baryons facilitate the direct measurement of photon helicity in transitions thus serving as an important test of physics beyond the Standard M…
Complementary bound on mass from Higgs to diphoton decay
Triparno Bandyopadhyay, Dipankar Das, Roman Pasechnik +1
Using the left-right symmetric model as an illustrative example, we suggest a simple and straightforward way of constraining the mass directly from the decay of the Higgs boso…
Boosted Top quark polarization
Rohini Godbole, Monoranjan Guchait, Charanjit K. Khosa +3
In top quark production, the polarization of top quarks, decided by the chiral structure of couplings, is likely to be modified in the presence of any new physics contribution to t…