Results 41 to 50 of about 215,997 (253)

Quark-meson coupling model with short-range quark-quark interactions

, 2000
Short-range quark-quark correlations are introduced into the quark-meson coupling (QMC) model phenomenologically. We study the effect of the correlations on the structure of the nucleon in dense nuclear matter.
Saito, Koichi, Tsushima, Kazuo
core   +1 more source

Charge symmetry violation in the parton distributions of the nucleon [PDF]

, 2000
We point out that charge symmetry violation in both the valence and sea quark distributions of the nucleon has a non-perturbative source. We calculate this non-perturbative charge symmetry violation using the meson cloud model, which has earlier been ...
A. D. Martin, A. D. Martin, A. I. Signal, A. I. Signal, A. O. Bazarko, A. W. Schreiber, A. W. Thomas, B. Q. Ma, B. Q. Ma, B. Q. Ma, C. Boros, C. Boros, C. Boros, C. Caso, C. J. Benesh, C. J. Benesh, E. Rodionov, E. Sather, F. Abe, F. Close, F. G. Cao, Fu-Guang Cao, G. A. Miller, H. Holtmann, H. L. Lai, J. J. Aubert, J. J. de Swart, J. Speth, J. T. Londergan, J. T. Londergan, J. T. Londergan, J. T. Londergan, J. T. Londergan, M. Arneodo, M. Glück, M. Glück, M. Miyama, R. E. Peierls, R. G. E. Timmermans, R. L. Jaffe, S. A. Rabinowitz, S. Kumano, W. G. Seligman, W. Melnitchouk   +43 more
core   +2 more sources

Masses and Internal Structure of Mesons in the String Quark Model [PDF]

, 1999
The relativistic quantum string quark model, proposed earlier, is applied to all mesons, from pion to $\Upsilon$, lying on the leading Regge trajectories (i.e., to the lowest radial excitations in terms of the potential quark models). The model describes
Caso, D. Alde, D. Alde, D. Alde, D. Alde, D. Alde, F. Binon, F.A. Berezin, G.M. Beladidze, L. D. Soloviev, L. Faddeev, L.D. Soloviev, L.D. Soloviev, P. A. M. Dirac, S. Godfrey, S. Weinberg   +15 more
core   +2 more sources

Models of the quark mixing matrix [PDF]

Physical Review D, 1992
Presented by Mihir P. Worah at DPF 92 Meeting, Fermilab, November, 1992.
Mihir P. Worah, Jonathan L. Rosner
openaire   +4 more sources

Unquenching the Quark Model in a Nonperturbative Scheme

Advances in High Energy Physics, 2019
In recent years, the discovery in quarkonium spectrum of several states not predicted by the naive quark model has awakened a lot of interest. A possible description of such states requires the enlargement of the quark model by introducing quark ...
Pablo G. Ortega, David R. Entem, Francisco Fernández   +2 more
doaj   +1 more source

Axial exchange currents and nucleon spin [PDF]

, 2006
We calculate the hypercharge and flavor singlet axial couplings related to the spin of the nucleon in a constituent quark model. In addition to the standard one-body axial currents, the model includes two-body axial exchange currents.
A. J. Buchmann, Abe), Ashman), Barquilla-Cano, Barquilla-Cano, Brodsky, Broniowski, Buchmann, Buchmann, Buchmann, Buchmann, Carlitz, Cheng, Cheng, Close, D. Barquilla-Cano, Dugger, E. Hernández, Feldmann, Flores-Mendieta, Groom), Ji, Kirchbach, Leutwyler, Lipkin, Manohar, Morpurgo, Napsuciale, Narison, Peris, Sehgal, Singleton, Weinberg, Yabu, Zhao, Zhu   +35 more
core   +2 more sources

RELATIVISTIC QUARK MODELS [PDF]

, 2001
The application of relativistic constituent quark models to the evaluation of the electromagnetic properties of the nucleon and its resonances is addressed. The role of the pair creation process in the Feynmann triangle diagram is discussed and the importance both of choosing the light-front formalism and of using a Breit frame where the plus component
openaire   +4 more sources

Heavy mesons in the Quark Model [PDF]

EPJ Web of Conferences, 2019
Since the discovery of theJ/ψ, the quark model was very successful in describing the spectrum and properties of heavy mesons including only q̄ components. However since 2003, with the discovery of theX(3872), many states that can not be accommodated on the naive quark model have been discovered, and they made unavoidable to include higher Fock ...
Entem, D.R., Ortega, P.G., Segovia, J., Fernández, F.   +3 more
openaire   +5 more sources

Exercise limitations in amyloid cardiomyopathy assessed by cardiopulmonary exercise testing—A multicentre study

ESC Heart Failure, Volume 12, Issue 2, Page 1326-1335, April 2025.
Abstract Aims Amyloid cardiomyopathy is caused by the deposition of light chain (AL) or transthyretin amyloid (ATTR) fibrils, that leads to a restrictive cardiomyopathy, often resulting in heart failure (HF) with preserved or reduced ejection fraction.
Robin Willixhofer, Mauro Contini, Michele Emdin, Damiano Magrì, Alice Bonomi, Elisabetta Salvioni, Fabrizio Celeste, Alberico Del Torto, Claudio Passino, Christophe D.J. Capelle, Chiara Arzilli, Emiliano Fiori, Nicolò Capra, Christina Kronberger, Nikita Ermolaev, Andreas Kammerlander, Beatrice Musumeci, Giuseppe Vergaro, Vincenzo Castiglione, René Rettl, Giacomo Tini, Andrea Baggiano, Iacopo Fabiani, Susanna Sciomer, Roza Badr Eslam, Piergiuseppe Agostoni   +25 more
wiley   +1 more source

Sacubitril/valsartan versus valsartan initiation in patients naïve to renin–angiotensin system inhibitors: Insights from PARAGLIDE‐HF

European Journal of Heart Failure, EarlyView.
Changes in N‐terminal pro‐B‐type natriuretic peptide and assessment of clinical endpoints according to prior exposure to renin–angiotensin system inhibitors in the Pre‐specified substudy of Prospective comparison of ARNI with ARB Given following stabiLization In DEcompensated HFpEF (PARAGLIDE‐HF).
Nina Nouhravesh, Alexander H. Gunn, Derek Cyr, Adrian F. Hernandez, David A. Morrow, Eric J. Velazquez, Jonathan H. Ward, Samiha Sarwat, Kavita Sharma, Kristin M. Williamson, Randall C. Starling, Serge Lepage, Shelley Zieroth, Scott D. Solomon, Robert J. Mentz   +14 more
wiley   +1 more source