Results 71 to 80 of about 21,261,020 (311)

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

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

Assessing Severity in Anorexia Nervosa Using Alternative Criteria to the DSM‐5 in a Cross‐Sectional Study

International Journal of Eating Disorders, EarlyView.
ABSTRACT Objective This study compared overvaluation of weight and shape (OWS), drive for thinness (DT), and their combination (OWS‐DT) as alternative severity classifications for anorexia nervosa (AN) to the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM‐5) severity classification.
Esther Henriet, Joanna Norton, Maude Seneque, Laurent Maimoun, Philippe Courtet, Sébastien Guillaume   +5 more
wiley   +1 more source

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

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

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

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

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

Phases of Hadron-Quark Matter in (Proto) Neutron Stars

Universe, 2019
In the first part of this paper, we investigate the possible existence of a structured hadron-quark mixed phase in the cores of neutron stars. This phase, referred to as the hadron-quark pasta phase, consists of spherical blob, rod, and slab rare phase ...
Fridolin Weber, Delaney Farrell, William M. Spinella, Germán Malfatti, Milva G. Orsaria, Gustavo A. Contrera, Ian Maloney   +6 more
doaj   +1 more source

Galectin‐3 and kidney function in type 2 diabetes treated with dapagliflozin: Analysis from DECLARE‐TIMI 58

ESC Heart Failure, EarlyView.
Abstract Background Galectin‐3 (Gal‐3) is a circulating biomarker of fibrosis, with higher levels being associated with an increased risk of progression of heart failure and kidney disease. Patients with type 2 diabetes mellitus (T2DM) are at increased risk of both.
Paul M. Haller, Stephen D. Wiviott, David D. Berg, Petr Jarolim, Erica L. Goodrich, Deepak L. Bhatt, Ingrid Gause‐Nilsson, Lawrence A. Leiter, Darren K. McGuire, John P.H. Wilding, Itamar Raz, Marc S. Sabatine, David A. Morrow   +12 more
wiley   +1 more source