Zobrazeno 1 - 10
of 438
pro vyhledávání: '"Chakraborty, Amlan"'
Light mass warm dark matter is an interesting and viable alternative to the cold dark matter paradigm. An intriguing variation of this scenario is the mass-varying dark matter model where the dark matter mass varies with time during its cosmic histor
Externí odkaz:
http://arxiv.org/abs/2405.08476
Many previous studies have explored models of dynamically interacting dark energy scenarios instead of a cosmological constant and cold dark matter. This work aims to offer a comprehensive investigation of the Yukawa-type interaction between dark ene
Externí odkaz:
http://arxiv.org/abs/2403.14247
We present three-loop helicity amplitudes for the production of a single photon in association with one jet in Quantum Chromodynamics, a final state which provides a standard candle of the Standard Model at the Large Hadron Collider. We employ a rece
Externí odkaz:
http://arxiv.org/abs/2212.14069
Autor:
Chakraborty, Amlan, Gambuti, Giulio
We present novel techniques for the computation of three-loop four-parton scattering amplitudes in full color, non-planar gauge theories. We elaborate on how the analytic results for these amplitudes can be used to confirm the conjectured infrared st
Externí odkaz:
http://arxiv.org/abs/2208.08139
Autor:
Caola, Fabrizio, Chakraborty, Amlan, Gambuti, Giulio, von Manteuffel, Andreas, Tancredi, Lorenzo
We compute the three-loop helicity amplitudes for $q\bar{q} \to gg$ and its crossed partonic channels, in massless QCD. Our analytical results provide a non-trivial check of the color quadrupole contribution to the infrared poles for external states
Externí odkaz:
http://arxiv.org/abs/2207.03503
Publikováno v:
The Astrophysical Journal, 932:119 (8pp), 2022 June 20
We propose a novel mechanism where Primordial Black Hole (PBH) dark matter is formed much later in the history of the universe between the epoch of Big Bang Nucleosynthesis (BBN) and Cosmic Microwave Background (CMB) photon decoupling. In our setup,
Externí odkaz:
http://arxiv.org/abs/2204.09628
Autor:
Chakraborty, Amlan, Huber, Tobias, Lee, Roman N., von Manteuffel, Andreas, Schabinger, Robert M., Smirnov, Alexander V., Smirnov, Vladimir A., Steinhauser, Matthias
We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized form factor agree with the predicted four-loop pattern. Furthermore, we
Externí odkaz:
http://arxiv.org/abs/2204.02422
Autor:
Caola, Fabrizio, Chakraborty, Amlan, Gambuti, Giulio, von Manteuffel, Andreas, Tancredi, Lorenzo
We compute the three-loop helicity amplitudes for the scattering of four gluons in QCD. We employ projectors in the 't Hooft-Veltman scheme and construct the amplitudes from a minimal set of physical building blocks, which allows us to keep the compu
Externí odkaz:
http://arxiv.org/abs/2112.11097
Autor:
De Rubis, Gabriele, Chakraborty, Amlan, Paudel, Keshav Raj, Wang, Chao, Kannaujiya, Vinod, Wich, Peter Richard, Hansbro, Philip Michael, Samuel, Chrishan S., Oliver, Brian, Dua, Kamal
Publikováno v:
In Chemico-Biological Interactions 1 June 2024 396
Autor:
Caola, Fabrizio, Chakraborty, Amlan, Gambuti, Giulio, von Manteuffel, Andreas, Tancredi, Lorenzo
Publikováno v:
J. High Energ. Phys. 2021, 206 (2021)
We compute the three-loop corrections to the helicity amplitudes for $q\bar{q}\to Q\bar{Q}$ scattering in massless QCD. In the Lorentz decomposition of the scattering amplitude we avoid evanescent Lorentz structures and map the corresponding form fac
Externí odkaz:
http://arxiv.org/abs/2108.00055