Results 41 to 50 of about 210,176 (213)
Information on the structure of the rho meson from the pion form-factor
, 2009 The electromagnetic pion form-factor is calculated in a Bethe-Salpeter approach which accounts for pion rescattering. In the scattering kernel the pion-pion contact interaction from lowest-order chiral perturbation theory is considered together with an ...
F. Klingl, S. Leupold
core +1 more source
Impact of unidentified light charged hadron data on the determination of pion fragmentation functions [PDF]
, 2019 In this paper a new comprehensive analysis of parton-to-pion fragmentation functions (FFs) is performed for the first time by including all experimental data sets on single inclusive pion as well as unidentified light charged hadron production in ...
Goharipour, Muhammad +2 more
core +2 more sources
Reviews of Modern Physics, 1961 Pion-pion interactions in pi -N processes are discussed, using a pi / sup +/ and pi /sup -/ beam at 1.03 Bev/c. (L.T.W.)
Anderson, Jerry A. +4 more
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Nature, 1976 Pion-Pion Interactions in Particle Physics. By B. R. Martin, D. Morgan and G. Shaw. Pp. xi+460. (Academic: London and New York, May 1976.) £16; $40.50.
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Pion-pion scattering in two dimensions [PDF]
Physical Review D, 1999 Massive two-flavor QED_2 is known to have many similarities to the two-flavor QCD_4. Here we compare the π-πscattering amplitudes (actually an analog process in QED_2) of the two theories. The QED_2 amplitude is computed from the bosonized version of the model while the QCD_4 amplitude is computed from an effective low energy chiral Lagrangian.
Schechter, Joseph +2 more
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JCPP Advances, EarlyView.Abstract Background Attention‐deficit/hyperactivity disorder (ADHD) is a neurodevelopmental condition with significant cognitive and social impacts. Identifying reliable biomarkers for ADHD is crucial for developing personalised therapies. Electroencephalography (EEG) alpha oscillations (8–12 Hz) have been suggested as a potential biomarker, but ...
Julio Rodriguez‐Larios +2 more
wiley +1 more source
Pion damping width from SU(2) x SU(2) NJL model
, 2003 Within the framework of the NJL model, we investigate the modification of the pion damping width in a hot pion gas for temperatures ranging from 0 to 180 MeV. The pion is found to broaden noticeably at T > 60 MeV. Near the chiral phase transition T ~ 180
B. Lenkeit +16 more
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THEORETICAL ASPECTS OF THE PION-PION INTERACTION [PDF]
International Journal of Modern Physics A, 2006 We give a brief review of the theoretical description of low energy pion-pion scattering by the combined use of Chiral Perturbation Theory and Roy equations, an update of the Regge parametrization of ππ cross sections at high energies, and a short discussion of the scalar radius of the pion.
CAPRINI, I. +2 more
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Acta Ophthalmologica, EarlyView.Abstract Purpose To investigate the diagnostic performance of ultrasound, 2‐deoxy‐2‐[18F]fluoro‐D‐glucose positron emission tomography/computed tomography (2‐[18F]FDG PET/CT) and temporal artery biopsy (TAB) in giant cell arteritis (GCA). Methods This was a prospective single‐centre diagnostic accuracy study (ClinicalTrials.gov NCT05248906).
Michael S. Hansen +10 more
wiley +1 more source
Narcissism Is Associated With Blunted Error‐Related Brain Activity
Journal of Personality, EarlyView.ABSTRACT Objective Narcissism is associated with self‐enhancement and social antagonism, yet its neural underpinnings, particularly in error processing, remain underexplored. Competing theoretical models, such as the mask model and the metacognitive model, offer conflicting hypotheses regarding how narcissism influences early neural responses to errors.
Esther M. Robins +5 more
wiley +1 more source