Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Shuang Yong Zhou"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 3, Pp 1-47 (2024)
Abstract SMEFT Wilson coefficients are subject to various positivity bounds in order to be consistent with the fundamental principles of S-matrix. Previous bounds on dimension-8 SMEFT operators have been obtained using the positivity part of UV parti
Externí odkaz:
https://doaj.org/article/f77f5c0493494e48848801f50cc9f109
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-27 (2024)
Abstract The physics of individual Q-balls and interactions between multiple Q-balls are well-studied in classical numerical simulations. Interesting properties and phenomena have been discovered, involving stability, forces, collisions and swapping
Externí odkaz:
https://doaj.org/article/d778c8cbc2404e00ae590f63ed1d7e82
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-74 (2023)
Abstract We compute the causality/positivity bounds on the Wilson coefficients of scalar-tensor effective field theories. Two-sided bounds are obtained by extracting IR information from UV physics via dispersion relations of scattering amplitudes, ma
Externí odkaz:
https://doaj.org/article/9565aa57e37f406b98cc0e345e3e89f2
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-47 (2022)
Abstract Moments of the leptonic angular distribution in the Drell-Yan process have recently been shown to be sensitive probes of a specific class of dimension-8, four-fermion operators in the Standard Model Effective Field Theory, involving a pair o
Externí odkaz:
https://doaj.org/article/4152a501f68746a3a29e411c1a310a54
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-25 (2022)
Abstract We study charge-swapping Q-balls, a kind of composite Q-ball where positive and negative charges co-exist and swap with time, in models with a logarithmic potential that arises naturally in supersymmetric extensions of the Standard Model. We
Externí odkaz:
https://doaj.org/article/a585d40157ef409395cdb5ed24391b4c
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 2, Pp 1-34 (2022)
Abstract Gravitational collapse into a black hole has been extensively studied with classical sources. We develop a new formalism to simulate quantum fields forming a black hole. By choosing a convenient coherent state, this formalism taps into well-
Externí odkaz:
https://doaj.org/article/b4f25a7496ac4145b4e32b87130facc5
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-35 (2021)
Abstract We develop a formalism to extract triple crossing symmetric positivity bounds for effective field theories with multiple degrees of freedom, by making use of su symmetric dispersion relations supplemented with positivity of the partial waves
Externí odkaz:
https://doaj.org/article/9427a64d810d43c6b17a989a898a6bb1
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 7, Pp 1-35 (2021)
Abstract For scalar theories accommodating spherically symmetric Q-balls, there are also towers of quasi-stable composite Q-balls, called charge swapping Q-balls (CSQs). We investigate the properties, particularly the lifetimes, of these long-lived C
Externí odkaz:
https://doaj.org/article/a0e177003570462fbcef2f0c8e575047
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-42 (2021)
Abstract Positivity bounds are powerful tools to constrain effective field theories. Utilizing the partial wave expansion in the dispersion relation and the full crossing symmetry of the scattering amplitude, we derive several sets of generically non
Externí odkaz:
https://doaj.org/article/ace90c17278d451a98f088d07ff6ebea
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-34 (2021)
Abstract We use generalized elastic positivity bounds to constrain the parameter space of multi-field spin-2 effective field theories. These generalized bounds involve inelastic scattering amplitudes between particles with different masses, which con
Externí odkaz:
https://doaj.org/article/e7d5607332c84e818ea25687313ae54c