Results 31 to 40 of about 7,016 (178)

Generalized Beth–Uhlenbeck Entropy Formula From the Φ‐Derivable Approach

Contributions to Plasma Physics, EarlyView.
ABSTRACT We derive a generalized Beth–Uhlenbeck formula for the entropy of a dense fermion system with strong two‐particle correlations, including scattering states and bound states. We work within the Φ‐derivable approach to the thermodynamic potential.
David Blaschke, Gerd Röpke, Gordon Baym
wiley   +1 more source

Search for Possible Stable Structures in the ${\mathit{T}}_{\mathit{c}\mathit{c}\overline{\mathit{q}}\overline{\mathit{s}}}$ System

Atoms
Inspired by the well-known experimental connections between X(3872), Zcs(4220), and Y(4620), we systematically study the recently reported strange partner of Tcc, the 1+ccq¯s¯ system, and its orbital excitation state 1−ccq¯s¯.
Linkai Li, Xiaohuang Hu, Yuheng Xing, Xinxing Wu, Ning Xu, Yuanrun Zhu, Yue Tan, Yuheng Wu   +7 more
doaj   +1 more source

The unquenched quark model

EPJ Web of Conferences, 2015
In this contribution, we briefly discuss the results for charmonium and bottomonium spectra with self-energy corrections in the unquenched quark model, due to the coupling to the meson-meson continuum The UQM formalism can be extended to include also the
Santopinto E., Ferretti J.
doaj   +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   +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

Searching for Stable States in the T_DD1 Systems Based on a Chiral Quark Model

Particles
Experimentally, the 1+ state X(3872) was first discovered, and subsequently, its partner state Y(4260), with the same quark content (cq¯qc¯) and quantum number 1− was also observed.
Yuheng Wu, Linkai Li, Yuheng Xing, Xinxing Wu, Yue Tan   +4 more
doaj   +1 more source

Quark models for mesons

EPJ Web of Conferences, 2012
With the advance of experiment, many high excited states of meson are identified. It is found that many of them are difficult to fit into conventional q$ar{q}$q¯ meson spectra. Various explanations are proposed.
Dong Fangfang, Huang Hongxia, Deng Chengrong, Ping Jialun, Wang Fan   +4 more
doaj   +1 more source

Different demographic drivers of recovery in two adjacent populations of a long‐lived bird of prey

Oikos, EarlyView.
Understanding the demographic mechanisms underlying population decline or recovery is critical for conservation and management, yet similar population trends may arise from very different underlying processes. Comparing populations of vulnerable species groups like long‐lived raptors in different environments can reveal how species respond to change ...
Carina Nebel, Toni Laaksonen, Torsten Stjernberg, Heikki Lokki, Michael Schaub   +4 more
wiley   +1 more source

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

MEMORIES OF MURRAY AND THE QUARK MODEL [PDF]

Proceedings of the Conference in Honour of Murray Gell-Mann's 80th Birthday, 2010
Life at Caltech with Murray Gell-Mann in the early 1960's is remembered. Our different paths to quarks, leading to different views of their reality, are described.
openaire   +3 more sources