INVESTIGADORES
PERESSUTTI javier Hector
artículos
Título:
Majorana neutrinos production at NLC in an effective approach
Autor/es:
JAVIER PERESSUTTI; ISMAEL ROMERO; OSCAR ALFREDO SAMPAYO
Revista:
PHYSICAL REVIEW D
Editorial:
AMER PHYSICAL SOC
Referencias:
Lugar: New York; Año: 2011 vol. 84 p. 113002 - 113003
ISSN:
1550-7998
Resumen:
We investigate the possibility of detecting Majorana neutrinos at the e+e- Next Linear Collider (NLC).
We study the ljlk+jets (lj=e,mu,tau) final states which are, due to leptonic number violation, a clear
signature for intermediate Majorana neutrino contributions. Such signals (final leptons of the same sign)
are not possible if the heavy neutrinos have Dirac nature. The interactions between Majorana neutrinos
and the standard model particles are obtained from an effective Lagrangian approach. As for the
background, we considered the standard model reaction e+e- -> W+W+W-W-, with two W0s decaying
into jets and two W's decaying into l+- + nu(nubar), producing extra light neutrinos which avoid the detection.
We present our results for the total cross section as a function of the neutrino mass and the center-of-mass
energy. We also show the discovery region as a function of the Majorana neutrino mass and the effective
coupling.Next Linear Collider (NLC).
We study the ljlk+jets (lj=e,mu,tau) final states which are, due to leptonic number violation, a clear
signature for intermediate Majorana neutrino contributions. Such signals (final leptons of the same sign)
are not possible if the heavy neutrinos have Dirac nature. The interactions between Majorana neutrinos
and the standard model particles are obtained from an effective Lagrangian approach. As for the
background, we considered the standard model reaction e+e- -> W+W+W-W-, with two W0s decaying
into jets and two W's decaying into l+- + nu(nubar), producing extra light neutrinos which avoid the detection.
We present our results for the total cross section as a function of the neutrino mass and the center-of-mass
energy. We also show the discovery region as a function of the Majorana neutrino mass and the effective
coupling. final states which are, due to leptonic number violation, a clear
signature for intermediate Majorana neutrino contributions. Such signals (final leptons of the same sign)
are not possible if the heavy neutrinos have Dirac nature. The interactions between Majorana neutrinos
and the standard model particles are obtained from an effective Lagrangian approach. As for the
background, we considered the standard model reaction e+e- -> W+W+W-W-, with two W0s decaying
into jets and two W's decaying into l+- + nu(nubar), producing extra light neutrinos which avoid the detection.
We present our results for the total cross section as a function of the neutrino mass and the center-of-mass
energy. We also show the discovery region as a function of the Majorana neutrino mass and the effective
coupling. W+W+W-W-, with two W0s decaying
into jets and two W's decaying into l+- + nu(nubar), producing extra light neutrinos which avoid the detection.
We present our results for the total cross section as a function of the neutrino mass and the center-of-mass
energy. We also show the discovery region as a function of the Majorana neutrino mass and the effective
coupling.W's decaying into l+- + nu(nubar), producing extra light neutrinos which avoid the detection.
We present our results for the total cross section as a function of the neutrino mass and the center-of-mass
energy. We also show the discovery region as a function of the Majorana neutrino mass and the effective
coupling.