ρ-Meson Mass Shift in Photoproduction Processes

1970 ◽  
Vol 2 (9) ◽  
pp. 2105-2107 ◽  
Author(s):  
P. D. Mannheim ◽  
U. Maor
Keyword(s):  
Mass Shift ◽  
Meson Mass

Isoscalar-meson mass shift due to the two-gluon intermediate state

1988 ◽  
Vol 37 (7) ◽  
pp. 1957-1962 ◽  
Author(s):  
Walter S. Jaronski ◽  
Chris Long
Keyword(s):  
Intermediate State ◽  
Mass Shift ◽  
Meson Mass

scholarly journals Fermion and meson mass generation in non-Hermitian Nambu–Jona-Lasinio models

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
Alexander Felski ◽  
S. P. Klevansky
Keyword(s):  
Meson Mass ◽  
Mass Generation

ϒand possible heavy-meson mass spectra

1978 ◽  
Vol 18 (1) ◽  
pp. 341-343
Author(s):  
Kohji Hirata ◽  
Tsunehiro Kobayashi ◽  
Nobuyuki Nakamaru
Keyword(s):  
Mass Spectra ◽  
Heavy Meson ◽  
Meson Mass

scholarly journals New limits on tanβ for 2HDMs with Z2 symmetry

2015 ◽  
Vol 30 (26) ◽  
pp. 1550158 ◽  
Author(s):  
Dipankar Das
Keyword(s):  
Lower Limit ◽  
Scalar Potential ◽  
Higgs Doublet ◽  
Exact Formula ◽  
Meson Mass ◽  
Neutral Meson ◽  
Breaking Parameter ◽  
Two Higgs Doublet Models ◽  
Breaking Term

In two-Higgs-doublet models with exact [Formula: see text] symmetry, putting [Formula: see text] at the alignment limit, the following limits on the heavy scalar masses are obtained from the conditions of unitarity and stability of the scalar potential: [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. The constraints from [Formula: see text] and neutral meson mass differences, when superimposed on the unitarity constraints, put a tighter lower limit on [Formula: see text] depending on [Formula: see text]. It has also been shown that larger values of [Formula: see text] can be allowed by introducing soft breaking term in the potential at the expense of a correlation between [Formula: see text] and the soft breaking parameter.

scholarly journals Flavour anomalies from a split dark sector

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Luc Darmé ◽  
Marco Fedele ◽  
Kamila Kowalska ◽  
Enrico Maria Sessolo
Keyword(s):  
Magnetic Moment ◽  
Anomalous Magnetic Moment ◽  
Mass Scale ◽  
Resonance Structure ◽  
Meson Mass ◽  
Dark Sector ◽  
Missing Energy ◽  
Effective Coupling ◽  
Heavy Particles ◽  
Near Future

Abstract We investigate solutions to the flavour anomalies in B decays based on loop diagrams of a “split” dark sector characterised by the simultaneous presence of heavy particles at the TeV scale and light particles around and below the B-meson mass scale. We show that viable parameter space exists for solutions based on penguin diagrams with a vector mediator, while minimal constructions relying on box diagrams are in strong tension with the constraints from the LHC, LEP, and the anomalous magnetic moment of the muon. In particular, we highlight a regime where the mediator lies close to the B-meson mass, naturally realising a resonance structure and a q2-dependent effective coupling. We perform a full fit to the relevant flavour observables and analyse the constraints from intensity frontier experiments. Besides new measurements of the anomalous magnetic moment of the muon, we find that decays of the B meson, Bs-mixing, missing energy searches at Belle-II, and LHC searches for top/bottom partners can robustly test these scenarios in the near future.

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