Left-right symmetry, supersymmetry: Cosmological constraint

2013 ◽  
Author(s):  
Urjit A. Yajnik ◽  
Sasmita Mishra ◽  
Debasish Borah
Keyword(s):  
Cosmological Constraint

Erratum: Cosmological constraint on the scale of the supersymmetric singlet Majoron

1994 ◽  
Vol 49 (11) ◽  
pp. 6246-6246 ◽  
Author(s):  
R. N. Mohapatra ◽  
X. Zhang
Keyword(s):  
Cosmological Constraint

scholarly journals Cosmological constraint on the Zee model

2001 ◽  
Vol 519 (3-4) ◽  
pp. 243-248 ◽  
Author(s):  
N Haba ◽  
K Hamaguchi ◽  
Tomoharu Suzuki
Keyword(s):  
Cosmological Constraint

Cosmological Constraint Revisited from K Band Galactic Counts

1998 ◽  
Vol 30 (2) ◽  
pp. 275-280
Author(s):  
Xu Wen ◽  
Yu Yunqiang ◽  
Zhou Guorong
Keyword(s):  
Cosmological Constraint ◽  
K Band

scholarly journals Analyse this! A cosmological constraint package for CMBEASY

2004 ◽  
Vol 2004 (09) ◽  
pp. 003-003 ◽  
Author(s):  
Michael Doran ◽  
Christian M Müller
Keyword(s):  
Cosmological Constraint

scholarly journals Cosmological constraint on vector mediator of neutrino-electron interaction in light of XENON1T excess

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Masahiro Ibe ◽  
Shin Kobayashi ◽  
Yuhei Nakayama ◽  
Satoshi Shirai
Keyword(s):  
Energy Spectrum ◽  
New Physics ◽  
Recoil Energy ◽  
Electron Interaction ◽  
Vector Particle ◽  
Effective Number ◽  
Parameter Region ◽  
Light Vector ◽  
Electron Recoil ◽  
Cosmological Constraint

Abstract Recently, the XENON1T collaboration reported an excess in the electron recoil energy spectrum. One of the simplest new physics interpretation is a new neutrino-electron interaction mediated by a light vector particle. However, for the parameter region favored by this excess, the constraints from the stellar cooling are severe. Still, there are astrophysical uncertainties on those constraints. In this paper, we discuss the constraint on the light mediator from the effective number of neutrino Neff in the CMB era, which provides an independent constraint. We show that Neff is significantly enhanced and exceeds the current constraint in the parameter region favored for the XENON1T excess. As a result, the interpretation by a light mediator heavier than about 1 eV is excluded by the Neff constraint.

scholarly journals MODEL INDEPENDENT CONSTRAINTS OF THE AVERAGED NEUTRINO MASSES REVISITED

2013 ◽  
Vol 28 (39) ◽  
pp. 1350186
Author(s):  
TAKESHI FUKUYAMA ◽  
HIROYUKI NISHIURA
Keyword(s):  
Lower Bound ◽  
Beta Decay ◽  
Neutrino Oscillation ◽  
Neutrino Mass ◽  
Upper Bounds ◽  
Neutrino Masses ◽  
Normal Hierarchy ◽  
Inverted Hierarchy ◽  
Model Independent ◽  
Cosmological Constraint

Averaged neutrino masses defined by [Formula: see text] are reanalyzed using up-to-date observed MNS parameters and neutrino masses by the neutrino oscillation experiments together with the cosmological constraint on neutrino masses. The values of 〈mν〉ab are model-independently evaluated in terms of effective neutrino mass defined by [Formula: see text] which is observable in the single beta decay. We obtain lower bound for 〈mν〉ee in the inverted hierarchy (IH) case, 17 meV ≤〈mν〉ee and one for 〈mν〉τμ in the normal hierarchy (NH) case, 5 meV ≤〈mν〉τμ. We also obtain that all the averaged masses 〈mν〉ab have upper bounds which are at most 80 meV.

scholarly journals Cosmological constraint on the light gravitino mass from CMB lensing and cosmic shear

2016 ◽  
Vol 2016 (06) ◽  
pp. 004-004 ◽  
Author(s):  
Ken Osato ◽  
Toyokazu Sekiguchi ◽  
Masato Shirasaki ◽  
Ayuki Kamada ◽  
Naoki Yoshida
Keyword(s):  
Gravitino Mass ◽  
Cosmic Shear ◽  
Cosmological Constraint
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