Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Gupta, Rick S."'
We present a minimal cosmological solution to the hierarchy problem. Our model consists of a light pseudoscalar and an extra Higgs doublet in addition to the field content of the Standard Model. We consider a landscape of vacua with varying values of
Externí odkaz:
http://arxiv.org/abs/2407.15935
The $SU(2)_L\times U(1)_Y$ invariance of the Standard Model Effective Field Theory (SMEFT) predicts multiple restrictions in the space of Wilson coefficients of $U(1)_{em}$ invariant effective lagrangians such as the Low-energy Effective Field Theory
Externí odkaz:
http://arxiv.org/abs/2404.10061
Autor:
Csáki, Csaba, D'Agnolo, Raffaele Tito, Gupta, Rick S., Kuflik, Eric, Roy, Tuhin S., Ruhdorfer, Maximilian
We investigate the dynamics responsible for generating the potential of the $\eta'$, the (would-be) Goldstone boson associated with the anomalous axial $U(1)$ symmetry of QCD. The standard lore posits that pure QCD dynamics generates a confining pote
Externí odkaz:
http://arxiv.org/abs/2307.04809
Time and space translation invariance, giving rise to energy and momentum conservation, are not only amongst the most fundamental but also the most generally accepted symmetry assumptions in physics. It is nevertheless prudent to put such assumptions
Externí odkaz:
http://arxiv.org/abs/2211.04490
Autor:
Gupta, Rick S.
We show that it is essential to include renormalisation group (RG) effects for determining the SMEFT parameter space consistent with the CDF W-mass anomaly at the matching scale. This is because operators that are only weakly constrained--for instanc
Externí odkaz:
http://arxiv.org/abs/2204.13690
Publikováno v:
JHEP 02 (2022) 176
We study standard electroweak/Higgs processes at the high-energy lepton colliders ILC and CLIC. We identify a subset of three operators in the SMEFT that give leading contributions to these processes at high energies. We then perform a `high-energy f
Externí odkaz:
http://arxiv.org/abs/2109.14634
Autor:
Banerjee, Shankha, Gupta, Rick S., Ochoa-Valeriano, Oscar, Spannowsky, Michael, Venturini, Elena
Publikováno v:
JHEP 06 (2021) 031
The Method of Moments is a powerful framework to disentangle the relative contributions of amplitudes of a specific process to its various phase space regions. We apply this method to carry out a fully differential analysis of the Higgs decay channel
Externí odkaz:
http://arxiv.org/abs/2012.11631
Publikováno v:
JHEP 04 (2021) 125
We study the production of Higgs bosons at high transverse momenta via vector-boson fusion (VBF) in the Standard Model Effective Field Theory (SMEFT). We find that contributions from four independent operator combinations dominate in this limit. Thes
Externí odkaz:
http://arxiv.org/abs/2011.03555
Publikováno v:
JHEP 09 (2020) 170
We obtain SMEFT bounds using an approach that utilises the complete multi-dimensional differential information of a process. This approach is based on the fact that at a given EFT order, the full angular distribution in the most important electroweak
Externí odkaz:
http://arxiv.org/abs/1912.07628
The very low mass and small coupling of axion-like particles (ALPs) is usually taken as a guarantor of their cosmological longevity, making them excellent dark matter candidates. That said, Bose enhancement could stimulate decays and challenge this p
Externí odkaz:
http://arxiv.org/abs/1911.07885