TWIST-TWO LIGHTCONE PION WAVE FUNCTION
نویسندگان
چکیده
منابع مشابه
Pion Scattering Length from Two - Pion Wave Function ∗
We present a preliminary report on a calculation of scattering length for I = 2 S-wave two-pion system directly from the two-pion wave function. Results are compared with those calculated from the time dependence of twopion four-point functions. Calculations are made with an RG-improved action for gluons and improved Wilson action for quarks at a−1 = 1.207(12) GeV on 20 × 48 and 24 × 48 lattices.
متن کاملA Model for the Twist-3 Wave Function of the Pion and Its Contribution to the Pion Form Factor
Tao Huang1,2∗ and Xing-Gang Wu2† CCAST(World Laboratory), P.O.Box 8730, Beijing 100080, P.R.China, Institute of High Energy Physics, Chinese Academy of Sciences, P.O.Box 918(4), Beijing 100049, China.‡ Abstract A model for the twist-3 wave function ψp(x,k⊥) of the pion has been constructed based on the moment calculation by applying the QCD sum rules, whose distribution amplitude has a better e...
متن کاملHigher–Twist Contribution to Pion Structure Function: 4–Fermi Operators
S. Capitani , M. Göckeler , R. Horsley , B. Klaus , V. Linke , P.E.L. Rakow , A. Schäfer b and G. Schierholz a,d aDeutsches Elektronen-Synchrotron DESY, D-22603 Hamburg, Germany bInstitut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany cInstitut für Physik, Humboldt-Universität zu Berlin, D-10115 Berlin, Germany dDeutsches Elektronen-Synchrotron DESY, John von Neuma...
متن کاملAnalyses of two and three pion Bose-Einstein Correlations using Coulomb wave function
Using effective formulas we analyze the Bose-Einstein correlations (BEC) data corrected for Coulomb interactions provided by STAR Collaboration and the quasicorrected data on 2π and 3π BEC by using Coulomb wave function with coherence parameter included. The corresponding magnitudes of the interaction regions turn out to be almost the same: RCoul(2π) ≃ 3 2RCoul(3π). RCoul means the size of inte...
متن کاملThe Πγ Transition Form Factor and the Pion Wave Function
The pion wave function is discussed in the light of the recent CLEO data on the πγ transition form factor. It turns out that the wave function is close to the asymptotic form whereas wave functions strongly concentrated in the end-point regions are disfavoured. Consequences for other exclusive quantities, as for instance the pion’s electromagnetic form factor, are also discussed. kroll@theorie....
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: Modern Physics Letters A
سال: 1998
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732398003089