First Measurement of Form-Factors of the Beta Decay of the Neutral Xi Hyperon

2000 ◽  
Author(s):  
Stephen Taliaferro Bright
Keyword(s):  
Beta Decay ◽  
Form Factors ◽  
Xi Hyperon

scholarly journals Neutrino masses from low scale partial compositeness

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Zackaria Chacko ◽  
Patrick J. Fox ◽  
Roni Harnik ◽  
Zhen Liu
Keyword(s):  
Beta Decay ◽  
Form Factors ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Hidden Sector ◽  
Partial Compositeness ◽  
Order Of Magnitude ◽  
Partially Composite ◽  
Compositeness Scale

Abstract We consider a class of models in which the neutrinos acquire Majorana masses through mixing with singlet neutrinos that emerge as composite states of a strongly coupled hidden sector. In this framework, the light neutrinos are partially composite particles that obtain their masses through the inverse seesaw mechanism. We focus on the scenario in which the strong dynamics is approximately conformal in the ultraviolet, and the compositeness scale lies at or below the weak scale. The small parameters in the Lagrangian necessary to realize the observed neutrino masses can naturally arise as a consequence of the scaling dimensions of operators in the conformal field theory. We show that this class of models has interesting implications for a wide variety of experiments, including colliders and beam dumps, searches for lepton flavor violation and neutrinoless double beta decay, and cosmological observations. At colliders and beam dumps, this scenario can give rise to striking signals involving multiple displaced vertices. The exchange of hidden sector states can lead to observable rates for flavor violating processes such as μ → eγ and μ → e conversion. If the compositeness scale lies at or below a hundred MeV, the rate for neutrinoless double beta decay is suppressed by form factors and may be reduced by an order of magnitude or more. The late decays of relic singlet neutrinos can give rise to spectral distortions in the cosmic microwave background that are large enough to be observed in future experiments.

Calculation of double beta-decay rates using nuclear form factors

1988 ◽  
Vol 100 (6) ◽  
pp. 941-952 ◽  
Author(s):  
A. Bottino ◽  
C. Giunti ◽  
C. W. Kim
Keyword(s):  
Beta Decay ◽  
Form Factors ◽  
Decay Rates ◽  
Double Beta Decay

Beta-decay of polarized Λ hyperons II. Determination of the vector and axial vector form factors

1971 ◽  
Vol 37 (5) ◽  
pp. 535-537 ◽  
Author(s):  
K.H. Althoff ◽  
R.M. Brown ◽  
D. Freytag ◽  
K.S. Heard ◽  
J. Heintze ◽  
...  
Keyword(s):  
Beta Decay ◽  
Axial Vector ◽  
Form Factors ◽  
Vector Form

scholarly journals Theoretical prediction of $\Lambda$, $\Sigma$, $\Xi$ hyperon magnetic form factors $|G_M^Y(t)|$ behaviours and also ratio $|G_E^Y(t)|/|G_M^Y(t)|$ in time-like region.

2018 ◽  
Author(s):  
Stanislav Dubnicka ◽  
Anna Zuzana Dubnickova ◽  
Cyril Adamuscin ◽  
Erik Bartos
Keyword(s):  
Theoretical Prediction ◽  
Form Factors ◽  
Xi Hyperon ◽  
Magnetic Form Factors

semi-leptonic beta-decay form factors and magnetic moments of octet baryons: Recoil effects and center-of-mass corrections in the cloudy bag model including gluonic effects

1989 ◽  
Vol 500 (3) ◽  
pp. 429-484 ◽  
Author(s):  
Yamaguchi Tetsuya ◽  
Tsushima Kazuo ◽  
Y. Kohyama ◽  
K. Kubodera
Keyword(s):  
Beta Decay ◽  
Magnetic Moments ◽  
Center Of Mass ◽  
Form Factors ◽  
Bag Model ◽  
Decay Form ◽  
Octet Baryons

NEUTRINO MASS FROM BETA DECAY OF THE FREE NEUTRON

2002 ◽  
Vol 11 (06) ◽  
pp. 573-593 ◽  
Author(s):  
R. TEGEN ◽  
H. G. MILLER
Keyword(s):  
Decay Rate ◽  
Beta Decay ◽  
Neutrino Mass ◽  
Neutrino Oscillations ◽  
Form Factors ◽  
Mass Effects ◽  
Neutrino Spectrum ◽  
Free Neutron ◽  
Nucleon Form Factors ◽  
Degenerate Neutrino

We calculate the beta decay rate of the free neutron including effects due to (i) a neutrino mass around 1 eV, (ii) deviations from the leptonic V-A structure, (iii) nucleon form factors [Formula: see text], GA(q2), and (iv) W- propagation. At the end-point energies linear neutrino mass effects in [Formula: see text] are almost exclusively kinematical. If the neutrino spectrum is (almost) degenerate, neutrino oscillations cannot uniquely determine the mass of the neutrino, and direct mass determinations become necessary. The traditional Kurie plot and a partially integrated decay rate are found to be sensitive to a neutrino mass between 1 eV and 3 eV.

Double beta decay of 100Mo

2002 ◽  
Vol 110 (2) ◽  
pp. 378-380 ◽  
Author(s):  
V Ashitkov
Keyword(s):  
Beta Decay ◽  
Double Beta Decay

THE STRUCTURE OF 6Li AND ITS COULOMB FORM FACTORS

1971 ◽  
Vol 32 (C5) ◽  
pp. C5b-269-C5b-270
Author(s):  
Kuniharu Kubodera
Keyword(s):  
Form Factors

BETA DECAY OPENS THE WAY TO WEAK INTERACTIONS

1982 ◽  
Vol 43 (C8) ◽  
pp. C8-261-C8-300
Author(s):  
E. Amaldi
Keyword(s):  
Beta Decay ◽  
Weak Interactions ◽  
The Way

Beta decay of the neutron

1977 ◽  
Vol 123 (12) ◽  
pp. 692 ◽  
Author(s):  
B.G. Erozolimskii
Keyword(s):  
Beta Decay
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