5 papers · 1 filter
A relook at a low reheating temperature: Freeze-in versus Freeze-out
Debajyoti Choudhury, Vineet K. Jha, Rameswar Sahu
A lowering of the post-inflation reheating temperature has attracted much attention as a means to facilitate obtaining the correct Dark Matter (DM) relic abundance. We…
Return of the CHAMPs: A clockwork portal to charged dark matter
Debajyoti Choudhury, Vineet K. Jha, Suvam Maharana
While Dark Matter (DM) is conventionally assumed to be chargeless, the possibility of a charged massive particle (CHAMP) as the DM particle remains alive. With phenomenological con…
Polarisation fractions in : U-Spin constraints and new physics signatures
Debajyoti Choudhury, Suman Kumbhakar, Anirban Kundu +1
We investigate the decays of mesons, {\em i.e.}, , , , and their antiparticles, to two light vector mesons (). We use the SU(2) U-spin symmetry, wh…
Axion Icebergs: Clockwork ALPs at hadron colliders
Srimoy Bhattacharya, Debajyoti Choudhury, Suvam Maharana +1
Scenarios with multiple pseudoscalars are interesting as they usually tend to provide a framework to naturally realize a light axion with a large decay constant which has rich appl…
Boosted four-top production at the LHC : a window to Randall-Sundrum or extended color symmetry
Debajyoti Choudhury, Kuldeep Deka, Lalit Kumar Saini
Scenarios seeking to address the issue of electroweak symmetry breaking often have heavy colored gauge bosons coupling preferentially to the top quark. Considering the bulk Randall…