Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Dipan Sengupta"'
Autor:
Meera Deshpande, Jan Hamann, Dipan Sengupta, Martin White, Anthony G. Williams, Yvonne Y. Y. Wong
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 7, Pp 1-22 (2024)
Abstract SuperWIMPs are extremely weakly interacting massive particles that inherit their relic abundance from late decays of frozen-out parent particles. Within supersymmetric models, gravitinos and axinos represent two of the most well motivated su
Externí odkaz:
https://doaj.org/article/c9a116eba50947139b1eaca9efece5a5
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-4 (2023)
Externí odkaz:
https://doaj.org/article/1201f21ffc2b465e9b8ebd07a151da0b
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 9, Pp 1-52 (2022)
Abstract Leptonic signatures of Dark Matter (DM) are one of the cleanest ways to discover such a secluded form of matter at high energy colliders. We explore the full parameter space relevant to multi-lepton (2- and 3-lepton) signatures at the Large
Externí odkaz:
https://doaj.org/article/1b20244cda824d5e999de3e29e96711f
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-54 (2022)
Abstract The existence of a dark matter model with a rich dark sector could be the reason why WIMP dark matter has evaded its detection so far. For instance, colored coannihilation naturally leads to the prediction of heavier dark matter masses. Impo
Externí odkaz:
https://doaj.org/article/6bc438019a284c89b663364501d68fae
Publikováno v:
Letters in High Energy Physics, Vol 2023, Iss 1 (2023)
The non-observation of WIMP dark matter might be explained by the existence of complex dark sectors. We illustrate, on a model of colored coannihilation, that the Sommerfeld effect and bound state formation are fundamental in calculating the relic de
Externí odkaz:
https://doaj.org/article/a7e5d9ff0c2b41868b2d3106c10067b5
Autor:
Geneviève Bélanger, Aoife Bharucha, Benjamin Fuks, Andreas Goudelis, Jan Heisig, Adil Jueid, Andre Lessa, Kirtimaan A. Mohan, Giacomo Polesello, Priscilla Pani, Alexander Pukhov, Dipan Sengupta, José Zurita
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-58 (2022)
Abstract The measured branching fractions of B-mesons into leptonic final states derived by the LHCb, Belle and BaBar collaborations hint towards the breakdown of lepton flavour universality. In this work we take at face value the so-called R D ∗ $
Externí odkaz:
https://doaj.org/article/1ceee5964a294af49f54de0fd043e8dc
Publikováno v:
Universe, Vol 9, Iss 7, p 307 (2023)
Inspired by the well-known anomaly in the lifetime of the neutron, we investigated its consequences inside neutron stars. We first assessed the viability of the neutron decay hypothesis suggested by Fornal and Grinstein within neutron stars, in terms
Externí odkaz:
https://doaj.org/article/f5ceb30134ba42c880ee6149c94b561e
Autor:
Jason Aebischer, Wouter Dekens, Elizabeth E. Jenkins, Aneesh V. Manohar, Dipan Sengupta, Peter Stoffer
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-31 (2021)
Abstract We perform a model-independent analysis of the magnetic and electric dipole moments of the muon and electron. We give expressions for the dipole moments in terms of operator coefficients of the low-energy effective field theory (LEFT) and th
Externí odkaz:
https://doaj.org/article/7456bf0782f34dd79546a7f588d262f1
Autor:
Shankha Banerjee, Biplob Bhattacherjee, Andreas Goudelis, Björn Herrmann, Dipan Sengupta, Rhitaja Sengupta
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 2, Pp 1-35 (2021)
Abstract We examine the capacity of the Large Hadron Collider to determine the mean proper lifetime of long-lived particles assuming different decay final states. We mostly concentrate on the high luminosity runs of the LHC, and therefore, develop ou
Externí odkaz:
https://doaj.org/article/e55de6bc428c4fb4853862e611f8f30c
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 5, Pp 1-33 (2019)
Abstract An interesting class of models posits that the dark matter is a Majorana fermion which interacts with a quark together with a colored scalar mediator. Such a theory can be tested in direct detection experiments, through dark matter scatterin
Externí odkaz:
https://doaj.org/article/1c043f691e5846c1a07ec38a8094d790