Quark model - Open Access .click

Results 71 to 80 of about 225,392 (278)

, 2005
The top quark is the heaviest elementary particle observed to date. Its large mass makes the top quark an ideal laboratory to test predictions of perturbation theory concerning heavy quark production at hadron colliders.
Abazov V M +63 more
core +3 more sources

Quark Models and Quark Phenomenology

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

The dual quark models

, 2012
We briefly recall the historical environment around our 1971 and 1975 constructions of current-algebraic internal symmetry on the open string. These constructions included the introduction of world sheet fermions, the independent discovery of affine Lie algebra in physics (level one of affine su(3)), the first examples of the affine-Sugawara and coset ...
Bardakci, K., Halpern, M. B.
openaire +2 more sources

Bed rest decreases resting skeletal muscle O2 uptake and resting energy expenditure in young and elderly subjects

Experimental Physiology, EarlyView.
Abstract A decrease in resting muscle O2 uptake (V̇O2m${\dot V_{{{\mathrm{O}}_2}{\mathrm{m}}}}$) described during bed rest (BR) could determine a decreased whole‐body resting energy expenditure (REE), potentially useful during prolonged spaceflights. Two groups of recreationally active men (young [Y], n = 8, age 23 ± 5 years; elderly [E], n = 10, age ...
Giovanni Baldassarre +14 more
wiley +1 more source

Search for single production of vector-like quarks decaying into Wb in pp collisions at s $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

Journal of High Energy Physics, 2019
A search for singly produced vector-like quarks Q, where Q can be either a T quark with charge +2/3 or a Y quark with charge −4/3, is performed in proton–proton collision data at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity
The ATLAS collaboration +2932 more
doaj +1 more source

Radiative Transitions in Heavy Mesons in a Relativistic Quark Model

, 2000
The radiative decays of $D^*$, $B^*$, and other excited heavy mesons are analyzed in a relativistic quark model for the light degrees of freedom and in the limit of heavy quark spin-flavor symmetry.
A. N. Kamal +21 more
core +2 more sources

Updated analyses of gluon distribution functions for the pion and kaon from the gauge-invariant nonlocal chiral quark model [PDF]

, 2023
Parada T. P. Hutauruk, Seung-il Nam
openalex +1 more source

Tumbling top-quark condensate model [PDF]

Physical Review D, 1992
We propose a renormalizable model with no fundamental scalars which breaks itself in the manner of a "tumbling" gauge theory down to the standard model with a top-quark condensate. Because of anomaly cancellation requirements, this model contains two color sextet fermions (quixes), which are vector-like with respect to the standard model gauge group ...
openaire +3 more sources

Cerebral oxygen extraction across different exercise intensities: Role of arterial PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$

Experimental Physiology, EarlyView.
Abstract Stability in cerebral oxygen extraction fraction (OEF) is typically determined by alterations in cerebral blood flow (CBF). At rest, arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_2}}}$) and OEF exhibit a strong inverse relationship owing to the powerful influence of PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_2}}}$
L. Madden Brewster +11 more
wiley +1 more source

The Quark Spin Distributions of the Nucleon

, 1998
The quark helicity measured in polarized deep inelastic scattering is different from the quark spin in the rest frame of the nucleon. We point out that the quark spin distributions $\Delta q_{RF}(x)$ are connected with the quark helicity distributions ...
Aoki +11 more
core +2 more sources

quantum mechanics
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quarkonium

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quantum electrodynamics
high energy physics - phenomenology
high energy physics - phenomenology hep-ph