Large pT Pion Production and Clustered Parton Model
نویسندگان
چکیده
منابع مشابه
Effects of Parton kT in High-pT Particle Production
We report on recent work concerning the phenomenology of initial-state partonkT effects in direct-photon production and related processes in hadron collisions. After a brief summary of a kT -smearing model, we present a study of recent results on fixed-target and collider direct-photon production, using complementary data on diphoton and pion production that provide empirical guidance on the re...
متن کاملDIRECT COUPLING OF THE PION IN LARGE pT JET INTERACTIONS*
We emphasize a new class of high transverse momentum hadronlc collisions in which the entire energy of an incident meson is delivered into production of a pair of large l? jets at large angle, with no final state particles emerging along the beam axisc Simple two-body kinematics govern the reaction, with the longitudinal and transverse momentum of the second jet being specified uniquely in term...
متن کاملA Simple Model for Generalised Parton Distributions of the Pion
We present here an extension of our model for the pion, which we used previously to calculate its diagonal structure function, to the off-forward case. The imaginary part of the off-forward γπ → γπ scattering amplitude is evaluated in the chiral limit (mπ = 0) and related to the twist-two and twist-three generalised parton distributions H, H, H̃. Non-perturbative effects, linked to the size of t...
متن کاملParton Distributions for the Pion in a Chiral Quark Model
Parton distributions for the pion are studied in a chiral quark model characterized by a quark propagator for which a spectral representation is assumed. Electromagnetic and chiral symmetry constraints are imposed through the relevant Ward-Takahashi identities for flavoured vertex functions. Finiteness of the theory, requires the spectral function to be non-positive definite. Straightforward ca...
متن کاملThreshold Pion Production at Large Momentum Transfers
We consider threshold pion electroproduction on a proton target for photon virtualities in the region 1 − 10 GeV. The S-wave multipoles at threshold, E0+ and L0+, are calculated using light-cone sum rules.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1977
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.57.1641