Modeling electromagnetic form factors of light and heavy pseudoscalar mesons

El-Bennich, Bruno; Melo, J. P. B. C. de; Loiseau, B.; Dedonder, J.-P.; Frederico, T.

doi:10.1590/s0103-97332008000400016

Cited by 32 publications

(28 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition one obtains the following Euclidean constituent-quark mass, defined asM 2 = {s|s + M 2 (s) = 0}:M d = 0.36 GeV. As noted elsewhere [31,32], studies which do not or cannot implement light-quark dressing in this QCDconsistent manner, invariably encounter problems because of the need to employ rather large constituentquark masses and the associated poles in the light-quark propagators. This translates into considerable modelsensitivity in the results for any heavy-light form factors, such as B-to light-meson transition form factors [33].…”

Section: Introductionmentioning

confidence: 98%

StrongD→DπandB→Bπcouplings

2011

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 98%

StrongD→DπandB→Bπcouplings

2011

View full text Add to dashboard Cite

show abstract

“…(6) is momentum independent, a feature known from nonrelativistic and relativistic constituent quark models [59][60][61][62][63][64][65][66]. As we shall see, in conjunction with the BSE (7), this approximation still produces a realistic description of static observables and in particular of the mass spectrum of non-exotic ground-state mesons 2 .…”

Section: Spectroscopy From Continuum Qcdmentioning

confidence: 85%

The Charm and Beauty of Strong Interactions

El-Bennich

2018

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. We briefly review common features and overlapping issues in hadron and flavor physics focussing on continuum QCD approaches to heavy bound states, their mass spectrum and weak decay constants in different strong interaction models. Hadron and Flavor Physics: a twofold motivation, a unified approach?Hadron and flavor physics are often thought of as different research fields though they have in common the underlying theory which describes strong interactions in flavored and non-flavored hadrons, namely Quantum Chromodynamics (QCD). In particular confinement, one of QCD's paradigmatic hallmarks, may not be appreciated enough in flavor physics. Undoubtedly, in nonrelativistic QCD and effective field theory approaches to quarkonia and the fauna of new XYZ states the main focus is on spectroscopy and production mechanisms, where most efforts concentrate on nonrelativistic perturbative aspects, effective theories or potentials models [1][2][3][4].While certain quarkonia provide a relatively clean environment to probe strong dynamics, and the mass spectrum of their confined quarks is reasonably well described in nonrelativistic perturbative QCD (pQCD), many of the heavier XYZ states close to threshold may not be pureqq states but admixtures of meson molecules and a core of quarks. Moreover, it is desirable to unify the meson and baryon spectrum with a unique confining framework that correctly describes the dynamical chiral symmetry breaking (DCSB) pattern which occurs to varying degrees in hadrons. In particular, DCSB may still play an important role in charmonia where nonperturbative O(Λ QCD /m c ) contributions can be non negligible. On the other hand, the study of weak B-meson decays, once driven by factorization theorems [5] and soft collinear effective field theory [6], appears to be nowadays dominated by the quest for new physics largely motivated by recurrent announcements of the LHCb collaboration [7][8][9]. Still, it is exactly in the case of heavy-light mesons where our understanding of their QCD dynamics and emerging properties are the least well understood within continuum QCD approaches [10][11][12][13][14][15][16][17][18][19]. The reason for this is obviously the important difference in quark masses and the energetic light mesons produced in their decays, both of which are at the origin of a wide array of energy scales [20,21] which effective theories can merely separate.More generally, the main object of study in flavor physics is the origin of CP-violating phases in weak decays of flavored quarks confined in hadrons, where the Cabibbo-Kobayashi-Maskawa (CKM) mechanism has been established as the dominant Standard Model source of CP violation in heavymeson decays. On the other hand, the overwhelming bulk of visible matter is made of baryons containing light quarks. DCSB due to gluon self-interactions has by now been established to be the most important mass generating mechanism for visible matter in the Universe, which implies that for most observed matter the Higgs mechanism is almost irrelevan...

show abstract

“…The present model with the symmetric vertex [8,9,11,41], was demonstrated successful in describing the pion properties in nuclear medium [13,14]. The pion transverse momentum probability density in medium, P * π (k ⊥ ), in the pion rest frame P + = m * π is calculated by,…”

Section: Symmetric Pion Valence Wave Functionmentioning

confidence: 99%

In-medium pion valence distributions in a light-front model

2017

View full text Add to dashboard Cite

Pion valence distributions in nuclear medium and vacuum are studied in a light-front constituent quark model. The in-medium input for studying the pion properties is calculated by the quark-meson coupling model. We find that the in-medium pion valence distribution, as well as the in-medium pion valence wave function, are substantially modified at normal nuclear matter density, due to the reduction in the pion decay constant.

show abstract

Modeling electromagnetic form factors of light and heavy pseudoscalar mesons

Cited by 32 publications

References 22 publications

StrongD→DπandB→Bπcouplings

StrongD→DπandB→Bπcouplings

The Charm and Beauty of Strong Interactions

In-medium pion valence distributions in a light-front model

Contact Info

Product

Resources

About

Modeling electromagnetic form factors of light and heavy pseudoscalar mesons

Cited by 32 publications

References 22 publications

StrongD*→DπandB*→Bπcouplings

StrongD*→DπandB*→Bπcouplings

The Charm and Beauty of Strong Interactions

In-medium pion valence distributions in a light-front model

Contact Info

Product

Resources

About

StrongD→DπandB→Bπcouplings

StrongD→DπandB→Bπcouplings