Results 91 to 100 of about 4,505 (197)

Long-Lived Heavy Quarks: A Review

Advances in High Energy Physics, 2013
We review the theoretical and experimental situation for long-lived heavy quarks, or bound states thereof, arising in simple extensions of the Standard Model.
Mathieu Buchkremer, Alexander Schmidt
doaj   +1 more source

New signal for singlet Higgs and vector-like quarks at the LHC

Physics Letters B, 2014
We consider an extension of the Standard Model involving a singlet Higgs and down type vector-like quarks in the light of the current LHC Higgs data. For a good range of the parameters of the Higgs potential, and a mass range for the heavy vector-like ...
Durmuş Karabacak, S. Nandi, Santosh Kumar Rai   +2 more
doaj   +1 more source

Motivational Coaching Cues Can Modulate Prefrontal Cortex Activity and Perceptual Responses of Elite Football Players During High‐Intensity Interval Training: A Randomised Crossover fNIRS Study

European Journal of Sport Science, Volume 26, Issue 8, August 2026.
ABSTRACT Football coaches commonly provide verbal encouragement and exercise end‐point feedback to sustain players' effort by enhancing motivation during fitness training such as high‐intensity interval training (HIIT). However, the influence of such cues on the prefrontal cortex (PFC), a region involved in exercise cessation decisions, remains unclear.
Sanghyuk Han, SoYoung Ahn, Yunho Sung, Ji‐won Seo, Xinxing Li, Seungoh Han, Chaewoon Kim, Wook Song   +7 more
wiley   +1 more source

Disproportional ventilatory response to incremental exercise in individuals with cerebral palsy

Developmental Medicine &Child Neurology, Volume 68, Issue 8, Page 1139-1151, August 2026.
Individuals with cerebral palsy demonstrate a disproportionate ventilatory response during incremental exercise. Compared with typically developing peers, respiratory frequency increases earlier and at comparable exercise intensities, contributing to higher perceived exertion and reduced ventilatory efficiency. At task failure, respiratory frequency is
Linnéa Corell, Emma Hjalmarsson, Rodrigo Fernandez‐Gonzalo, Annika Kruse, Sebastian Edman, Asta Kizyte, Rouli Wang, Arnoud Edelman Bos, Peder Sörensson, Eva Pontén, Petra E. M. van Schie, Annemieke I. Buizer, Jessica Norrbom, Daniele A. Cardinale, Ferdinand von Walden   +14 more
wiley   +1 more source

Flavor asymmetry of light sea quarks in proton: a light-front spectator model

European Physical Journal C: Particles and Fields
We formulate a light-front spectator model for the proton that incorporates the presence of light sea quarks. In this particular model, the sea quarks are seen as active partons, whereas the remaining components of the proton are treated as spectators ...
Poonam Choudhary, Dipankar Chakrabarti, Chandan Mondal   +2 more
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Circulating mitochondrial‐derived microproteins at rest and in response to an acute bout of endurance exercise in individuals with cerebral palsy

Experimental Physiology, Volume 111, Issue 8, Page 3772-3783, 1 August 2026.
Abstract Regular exercise using assistive movement devices, such as running frames, has emerged as a promising strategy to improve cardiorespiratory fitness in individuals with cerebral palsy (CP). However, the molecular pathways underlying these adaptations remain poorly understood.
Oscar Horwath, Linnéa Corell, Junxiang Wan, Emma Hjalmarsson, Julia Starck, Stefan M. Reitzner, Jessica Norrbom, Rodrigo Fernandez‐Gonzalo, Ola Kvist, Pinchas Cohen, Ferdinand von Walden, Sebastian Edman   +11 more
wiley   +1 more source

Short-range correlations of partons & 3D nucleon structure

EPJ Web of Conferences, 2014
Dynamical breaking of chiral symmetry in QCD is caused by non-perturbative interactions on a scale ρ ∼ 0.3 fm much smaller than the hadronic size R ∼ 1 fm.
Schweitzer P.
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Constituent Quarks and Current Quarks [PDF]

, 1974
Quarks have been used in hadronic physics both as a constituent model for the hadrons and as a model for their electromagnetic and weak currents.
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Why is $${}^{208}_{82}\textrm{Pb}$$ 82 208 Pb the heaviest stable nuclide?

European Physical Journal C: Particles and Fields
In an effort to understand nuclei in terms of quarks we develop an effective theory to low-energy quantum chromodynamics in which a single quark contained in a nucleus is driven by a mean field due to other constituents of the nucleus.
B. P. Kosyakov, E. Yu Popov, M. A. Vronskiĭ   +2 more
doaj   +1 more source

Quark Models and Quark Phenomenology

, 1997
Invited Talk at Third Symposium on the History of Particle Physics, 20 ...
openaire   +2 more sources