Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Scadron, M. D."'
Autor:
Scadron, M. D., Green, B. A.
A pion-quark pairing temperature is defined by a BCS-like relation identified from a quark-level Goldberger-Treiman relation with a Nambu scalar mass "gap parameter" taken in the low-mass limit. This intuitive relation predicts the associated "experi
Externí odkaz:
http://arxiv.org/abs/0711.1339
Publikováno v:
Europhys.Lett.80:51001,2007
Light constituent quark masses and the corresponding dynamical quark masses are determined by data, the Quark-Level Linear $\sigma$ Model, and infrared QCD. This allows to define effective nonstrange and strange current quark masses which reproduce t
Externí odkaz:
http://arxiv.org/abs/0710.2273
Publikováno v:
J.Phys.G32:735-745,2006
Constituent quark masses can be determined quite well from experimental data in several ways and one can obtain fairly accurate values for all six $m_q$. The strong quark-meson coupling $g=2\pi /\sqrt{3}$ arises from the quark-level linear $\sigma$ m
Externí odkaz:
http://arxiv.org/abs/hep-ph/0603196
Publikováno v:
Int.J.Mod.Phys.A20:6189-6199,2005
Many meson processes are related to the U_A(1) axial anomaly, present in the Feynman graphs where fermion loops connect axial vertices with vector vertices. However, the coupling of pseudoscalar mesons to quarks does not have to be formulated via axi
Externí odkaz:
http://arxiv.org/abs/hep-ph/0512123
Autor:
Lowe, J., Scadron, M. D.
We use recent data on K^+ -> pi^+ e^+ e^-, together with known values for the pion form factor, to derive experimental values for the kaon electromagnetic form factor for 0 < q^2 < 0.125 (GeV/c)^2. The results are then compared with the predictions o
Externí odkaz:
http://arxiv.org/abs/hep-ph/0509333
We base our chiral symmetry approach on the quark-level linear sigma model Lagrangian. Then we review the Nambu--Goldstone theorem with vanishing pi, K, eta_8 masses. Next we dynamically generate the pi, K, eta_8 masses away from the chiral limit. Th
Externí odkaz:
http://arxiv.org/abs/hep-ph/0507208
Publikováno v:
Fizika B14 (2005) 13-30
Many meson processes are related to the U_A(1) axial anomaly, present in the Feynman graphs where fermion loops connect axial vertices with vector vertices. However, the coupling of pseudoscalar mesons to quarks does not have to be formulated via axi
Externí odkaz:
http://arxiv.org/abs/hep-ph/0503141
Autor:
Lowe, J., Scadron, M. D.
We use recent data on K^+ -> pi^+e^+e^-, together with known values for the pion form factor, to derive the kaon electromagnetic form factor for 0
Externí odkaz:
http://arxiv.org/abs/hep-ph/0503100
Autor:
Bugg, D. V., Scadron, M. D.
The latest $\pi N$ elastic scattering data are re-analysed to determine the coupling constant $g_c$ of the charged pion, using the dispersion relation for the invariant amplitude $B^{(+)}$. Depending on the choice of data-base, values $g^2_c/4\pi = 1
Externí odkaz:
http://arxiv.org/abs/hep-ph/0312346
Publikováno v:
AIPConf.Proc.688:183-190,2003
By comparing SU(3)-breaking scales of linear mass formulae, it is shown that the lowest vector, axial-vector, and scalar mesons all have a $\bar{q}q$ configuration, while the ground-state octet and decuplet baryons are $qqq$. Also, the quark-level li
Externí odkaz:
http://arxiv.org/abs/hep-ph/0307003