scholarly journals BelleJ/ψ+ηcanomaly and a very light scalar boson

2004 ◽  
Vol 69 (9) ◽  
Author(s):  
Kingman Cheung ◽  
Wai-Yee Keung
Keyword(s):  
Scalar Boson ◽  
Light Scalar

scholarly journals Dark photon from light scalar boson decays at FASER

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
T. Araki ◽  
K. Asai ◽  
H. Otono ◽  
T. Shimomura ◽  
Y. Takubo
Keyword(s):  
Gauge Symmetry ◽  
Standard Model ◽  
Parameter Space ◽  
Beyond The Standard Model ◽  
Scalar Boson ◽  
Dark Photon ◽  
The Standard Model ◽  
Light Scalar ◽  
Sizable Number

Abstract FASER is one of the promising experiments which search for long-lived particles beyond the Standard Model. In this paper, we focus on dark photon associating with an additional U(1) gauge symmetry, and also a scalar boson breaking this U(1) gauge symmetry. We study the sensitivity to the dark photon originated from U(1)-breaking scalar decays. We find that a sizable number of dark photon signatures can be expected in wider parameter space than previous studies.

scholarly journals Erratum to: Dark photon from light scalar boson decays at FASER

2021 ◽  
Vol 2021 (6) ◽  
Author(s):  
T. Araki ◽  
K. Asai ◽  
H. Otono ◽  
T. Shimomura ◽  
Y. Takubo
Keyword(s):  
Decay Width ◽  
Scalar Boson ◽  
Expected Number ◽  
Dark Photon ◽  
Light Scalar

Figure 1. Expected number of the signal events of the dark photon after correcting the ϕ decay width. We have found a mistake in calculations of the expected number of the signal events shown in figure 2, 4 and 5 of our paper.

Search for a Light Scalar Boson Emitted in Nuclear Decay

1984 ◽  
Vol 52 (4) ◽  
pp. 240-243 ◽  
Author(s):  
S. J. Freedman ◽  
J. Napolitano ◽  
J. Camp ◽  
M. Kroupa
Keyword(s):  
Scalar Boson ◽  
Nuclear Decay ◽  
Light Scalar

scholarly journals Search for Dimuon Decays of a Light Scalar Boson in Radiative TransitionsΥ→γA0

2009 ◽  
Vol 103 (8) ◽  
Author(s):  
B. Aubert ◽  
Y. Karyotakis ◽  
J. P. Lees ◽  
V. Poireau ◽  
E. Prencipe ◽  
...  
Keyword(s):  
Scalar Boson ◽  
Light Scalar

scholarly journals Explaining Atomki anomaly and muon g − 2 in U(1)X extended flavour violating two Higgs doublet model

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Takaaki Nomura ◽  
Prasenjit Sanyal
Keyword(s):  
Higgs Doublet ◽  
Scalar Boson ◽  
Parameter Region ◽  
Yukawa Couplings ◽  
Charge Assignment ◽  
Light Scalar ◽  
Doublet Model ◽  
Two Higgs Doublet Model ◽  
Scalar Sector ◽  
Lepton Flavour

Abstract We investigate a two Higgs doublet model with extra flavour depending U(1)X gauge symmetry where Z′ boson interactions can explain the Atomki anomaly by choosing appropriate charge assignment for the SM fermions. For parameter region explaining the Atomki anomaly we obtain light scalar boson with $$ \mathcal{O} $$ O (10) GeV mass, and we explore scalar sector to search for allowed parameter space. We then discuss anomalous magnetic dipole moment of muon and lepton flavour violating processes induced by Yukawa couplings of our model.

NEUTRINO CLOUDS

1998 ◽  
Vol 13 (16) ◽  
pp. 2765-2790 ◽  
Author(s):  
G. J. STEPHENSON ◽  
T. GOLDMAN ◽  
B. H. J. MCKELLAR
Keyword(s):  
Field Theories ◽  
Simple Problem ◽  
Scalar Boson ◽  
Unified Field Theories ◽  
Laboratory Measurements ◽  
Effective Masses ◽  
Unified Field ◽  
Light Scalar ◽  
The Masses ◽  
Existing Data

We consider the possibility that neutrinos (but no other light fermions) are coupled very weakly to an extremely light scalar boson. We first analyze the simple problem of one generation of neutrino and show that, for ranges of parameters that are allowed by existing data, such a system can have serious consequences for the evolution of stars and could impact precision laboratory measurements. We discuss the extension to more generations and show that the general conclusion remains viable. Finally, we note that, should such a scalar field be present, experiments give information about effective masses, not the masses that arise in unified field theories.

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