On the off-mass-shell form factors of the nucleon

1970 ◽  
Vol 65 (4) ◽  
pp. 597-606 ◽  
Author(s):  
A. Komatsuzawa ◽  
K. Nakazawa ◽  
R. Sugano
Keyword(s):  
Mass Shell ◽  
Form Factors ◽  
Shell Form

scholarly journals Asymptotic Behavior of Off-Mass-Shell Form Factors

1973 ◽  
Vol 49 (5) ◽  
pp. 1755-1757
Author(s):  
Kazo Nakazawa
Keyword(s):  
Asymptotic Behavior ◽  
Mass Shell ◽  
Form Factors ◽  
Shell Form

Off-mass-shell form factors of the nucleon

1970 ◽  
Vol 154 (1) ◽  
pp. 97-104 ◽  
Author(s):  
Ebbe M. Nyman
Keyword(s):  
Mass Shell ◽  
Form Factors ◽  
Shell Form

On kaon mass-shell form factors in K l3 and K l4 decay

1972 ◽  
Vol 8 (1) ◽  
pp. 1-14
Author(s):  
B. R. Wienke
Keyword(s):  
Mass Shell ◽  
Form Factors ◽  
Shell Form ◽  
Kaon Mass

Off-mass-shell form factors of the nucleon

1971 ◽  
Vol 25 (2) ◽  
pp. 637
Keyword(s):  
Mass Shell ◽  
Form Factors ◽  
Shell Form

scholarly journals THE TOROID DIPOLE MOMENT OF THE NEUTRINO

1998 ◽  
Vol 13 (30) ◽  
pp. 5257-5277 ◽  
Author(s):  
VLADIMIR M. DUBOVIK ◽  
VALENTIN E. KUZNETSOV
Keyword(s):  
Dipole Moment ◽  
Mass Shell ◽  
Dipole Moments ◽  
Form Factors ◽  
Dispersion Method ◽  
Anapole Moment ◽  
Electromagnetic Interactions ◽  
Loop Approximation ◽  
The Standard Model ◽  
The One

We discuss the third electromagnetic characteristic of the neutrino, i.e. the toroid dipole moment (TDM), in the framework of the Standard Model. The TDM's distinctions from and similarities to an anapole moment are mentioned. The calculations of toroid dipole moments of νe,μ,τ neutrinos have been done by the dispersion method in the one-loop approximation of the SM for the Majorana case and generalized to the Dirac one. We found them to be different from zero in the case of massive as well as massless neutrinos. The behavior of the νe,μ,τ toroid form factors is also presented in the [Formula: see text] range. All external particles are on the mass shell and there are no problems with the physical interpretation of the final result. Some manifestations of the electromagnetic interactions of neutrinos, induced by their toroid moments, are also remarked on.

Off-Shell Form Factors for Composite Hadrons and Exclusive Processes in Electroproduction

1973 ◽  
Vol 7 (11) ◽  
pp. 3372-3379 ◽  
Author(s):  
J. Sucher ◽  
C. H. Woo
Keyword(s):  
Form Factors ◽  
Shell Form ◽  
Exclusive Processes

Resolution of the proton radius puzzle via off-shell form factors

2012 ◽  
Author(s):  
Gerald A. Miller ◽  
Anthony W. Thomas ◽  
Jonathan D. Carroll ◽  
Johann Rafelski
Keyword(s):  
Form Factors ◽  
Shell Form ◽  
Proton Radius ◽  
Proton Radius Puzzle

scholarly journals Off-shell form factors and low energy theorems for pion photoproduction

1990 ◽  
Vol 41 (6) ◽  
pp. 2852-2864 ◽  
Author(s):  
H. W. L. Naus ◽  
J. H. Koch ◽  
J. L. Friar
Keyword(s):  
Form Factors ◽  
Pion Photoproduction ◽  
Low Energy ◽  
Shell Form

scholarly journals Flavoured axions in the tail of Bq → μ+μ− and B → γ* form factors

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
Johannes Albrecht ◽  
Emmanuel Stamou ◽  
Robert Ziegler ◽  
Roman Zwicky
Keyword(s):  
Sum Rules ◽  
Form Factors ◽  
Resonance Region ◽  
Decay Rates ◽  
Beyond The Standard Model ◽  
Background Process ◽  
Full Generality ◽  
Shell Form ◽  
The Standard Model ◽  
First Time

Abstract We discuss how LHC di-muon data collected to study Bq → μμ can be used to constrain light particles with flavour-violating couplings to b-quarks. Focussing on the case of a flavoured QCD axion, a, we compute the decay rates for Bq → μμa and the SM background process Bq → μμγ near the kinematic endpoint. These rates depend on non-perturbative Bq → γ(*) form factors with on- or off-shell photons. The off-shell form factors — relevant for generic searches for beyond-the-SM particles — are discussed in full generality and computed with QCD sum rules for the first time. This includes an extension to the low-lying resonance region using a multiple subtracted dispersion relation. With these results, we analyse available LHCb data to obtain the sensitivity on Bq → μμa at present and future runs. We find that the full LHCb dataset alone will allow to probe axion-coupling scales of the order of 106 GeV for both b → d and b → s transitions. As a spin-off application of the off-shell form factors we further analyse the case of light, Beyond the Standard Model, vectors.

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