Zobrazeno 1 - 10
of 195
pro vyhledávání: '"Kaoru Hagiwara"'
Publikováno v:
Physics Letters B, Vol 850, Iss , Pp 138547- (2024)
The total cross section of the process μ−μ+→νμν¯μtt¯H has strong dependence on the CP phase ξ of the top Yukawa coupling, where the ratio of ξ=π and ξ=0 (SM) grows to 670 at s=30 TeV, 3400 at 100 TeV. We study the cause of the strong
Externí odkaz:
https://doaj.org/article/dddaaa4803b24fe9ad62ba88f52d6386
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 10, Pp 1-28 (2023)
Abstract In the 5-component representation of weak bosons, the first four components make a Lorentz four vector, representing the transverse and longitudinal polarizations excluding the scalar component of the weak bosons, whereas its fifth component
Externí odkaz:
https://doaj.org/article/77fa81aa7ecf4da2a4e0a5630213f96d
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 1, Pp 1-1 (2024)
Externí odkaz:
https://doaj.org/article/982a88ae601f4dce8b7d6142f22f1fa3
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 9, Pp 1-43 (2020)
Abstract We study Higgs boson production associated with single top or anti-top via t-channel weak boson exchange at the LHC. The process is an ideal probe of the top quark Yukawa coupling, because we can measure the relative phase of htt and hWW cou
Externí odkaz:
https://doaj.org/article/2d634dc3c26c412ab70f349d46de64ef
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 6, Pp 1-11 (2020)
Abstract We introduce photon and gluon propagators in which the scalar polarization component is subtracted systematically by making use of the BRST invariance of the off-shell vector boson created from physical on-shell states. The propagator has th
Externí odkaz:
https://doaj.org/article/65ba4340d8fb4cb9aab2410c5f8ea075
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-38 (2018)
Abstract We study consequences of CP violation in the htt¯ $$ ht\overline{t} $$ Yukawa coupling through the process e+e−→h125tt¯ $$ {e}^{+}{e}^{-}\to h(125)t\overline{t} $$. The helicity amplitudes are calculated in the tt¯ $$ t\overline{t} $$
Externí odkaz:
https://doaj.org/article/45c53ba5703948178e29ebc0f635009a
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 73, Iss 7, Pp 1-12 (2013)
Abstract TauDecay is a library of helicity amplitudes to simulate polarized tau decays, constructed in the FeynRules and MadGraph5 framework. Together with the leptonic mode, the decay library includes the main hadronic modes, τ→ν τ+π, 2π, and
Externí odkaz:
https://doaj.org/article/eac4cebee7b840afbf3d27d773e73820
Publikováno v:
Physical Review D
Physical Review D, American Physical Society, 2021, 104 (3), pp.034023. ⟨10.1103/PhysRevD.104.034023⟩
Physical Review
Physical Review D, American Physical Society, 2021, 104 (3), pp.034023. ⟨10.1103/PhysRevD.104.034023⟩
Physical Review
We study reported deviations between observations and theoretical predictions associated with the production of a pair of di-leptonically decaying top quarks at the LHC, and we examine the possibility that they reflect a signal of toponium formation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da19a6fecaa162e552f268eed28503cd
https://hal.archives-ouvertes.fr/hal-03164347
https://hal.archives-ouvertes.fr/hal-03164347
Publikováno v:
Physical Review D. 101
To measure the helicity of a spin-1 meson from the triple vector product of the three-momenta of its decay products, one needs information about the strong phase of the decay amplitude. In this paper, taking ${a}_{1}(1260)$ meson as an example, we pr