Discriminating between chiral models of the nucleon via hard semi-inclusive evector Nvector and Nvector Nvector scattering

Dressler, B.; Goeke, K.; Polyakov, M. V.; Schweitzer, P.; Strikman, M.; Weiss, C.
March 2000
AIP Conference Proceedings;2000, Vol. 508 Issue 1, p23
Conference Proceeding
Measurements of the flavor asymmetry of the polarized antiquark distributions in the nucleon, Δu¯(x)-Δd¯(x), would provide a unique opportunity to discriminate between different models of the role of the chiral structure of the nucleon in deep-inelastic scattering. In the pion cloud model of the nucleon’s sea quark distributions the polarized flavor asymmetry is zero, while the large-N[sub c] picture of the nucleon as a chiral soliton predicts large polarized flavor asymmetries. We discuss the prospects for measuring the polarized antiquark flavor asymmetries in two types of semi-inclusive scattering experiments: i) Hadron production in semi-inclusive polarized eN scattering (SMC, HERMES); ii) Drell-Yan lepton pair production in polarized NN scattering at HERA or RHIC energies. In particular, the Drell-Yan spin asymmetries are shown to be remarkably sensitive to Δu¯(x)-Δd¯(x). © 2000 American Institute of Physics.


Related Articles

  • THE DEPENDENCE OF THE NUCLEON MASS ON THE PION MASS IN THE EXTENDED QUARK SIGMA MODEL. ABU-SHADY, M. // International Journal of Modern Physics E: Nuclear Physics;Oct2010, Vol. 19 Issue 10, p2051 

    The dependence of the nucleon mass on the pion mass is studied in the framework of the extended quark sigma model. We apply the modified quark sigma model to analyze the pion-nucleon sigma term. Analytic expressions are derived using the Feynman-Hellman theorem. The field equations are solved in...

  • Chiral constituent quark model study of the process γp → ηp ⋆. He, J.; Saghai, B.; Li, Z.; Zhao, Q.; Durand, J. // European Physical Journal A -- Hadrons & Nuclei;Mar2008, Vol. 35 Issue 3, p321 

    A constituent quark model is developed for the reaction γ p → η p , allowing us to investigate all available data for differential cross-sections as well as single polarization asymmetries (beam and target) by including all of the PDG, one to four star, nucleon resonances (S11, P11,...

  • Off-shell Effect of the Quark-model NN Interaction in the Nd Scattering. Fujiwara, Y.; Fukukawa, K. // Few-Body Systems;Dec2013, Vol. 54 Issue 12, p2357 

    Low- and medium-energy nucleon–deuteron ( Nd) scattering less than the incident energy 65 MeV per nucleon is examined by using the quark-model nucleon–nucleon ( NN) interaction fss2. The off-shell effect of this non-local interaction yields a part of the attractive effect given...

  • Saturation effects in low-x DIS structure functions and related hadronic total cross sections. Celiberto, Francesco Giovanni; Jenkovszky, Laszlo; Myronenko, Volodymyr // EPJ Web of Conferences;2016, Vol. 125, p1 

    High-energy nucleon total cross sections are related to low-x DIS structure functions by using the additive quark model.

  • Multiple Scattering Theory via Quark Model. Shalaby, A. S. // International Review of Physics;Dec2008, Vol. 2 Issue 6, p357 

    Within the formalism of Glauber's multiple scattering theory, the elastic scattering of proton with light- and medium-weighted nuclei (A≥2) has been investigated by considering the quark structure of their constituents. The proton-nucleus calculations for the differential and total elastic...

  • LATTICE STUDY ON KAON–NUCLEON SCATTERING LENGTH IN THE I=1 CHANNEL. Meng, Guangwei; Miao, Chuan; Du, Xining; Liu, Chuan // International Journal of Modern Physics A: Particles & Fields; G;10/20/2004, Vol. 19 Issue 26, p4401 

    Using the tadpole improved clover Wilson quark action on small, coarse and anisotropic lattices, KN scattering length in the I=1 channel is calculated within quenched approximation. The results are extrapolated towards the chiral and physical kaon mass region. Finite volume and finite lattice...

  • Contribution of orbital angular momentum to the nucleon spin. Momeni-Feili, Maryam; Arash, Firooz; Taghavi-Shahri, Fatemeh; Shahveh, Abolfazl // International Journal of Modern Physics A: Particles & Fields; G;3/10/2017, Vol. 32 Issue 6/7, p-1 

    We have calculated the orbital angular momentum of quarks and gluons in the nucleon. The calculations are carried out in the next to leading order utilizing the so-called valon model. It is found that the average quark orbital angular momentum is positive, but small, and the average gluon...

  • Electromagnetic and axial-vector form factors of the quarks and nucleon. Dahiya, Harleen; Randhawa, Monika // International Journal of Modern Physics A: Particles & Fields; G;Nov2017, Vol. 32 Issue 31, p-1 

    In light of the improved precision of the experimental measurements and enormous theoretical progress, the nucleon form factors have been evaluated with an aim to understand how the static properties and dynamical behavior of nucleons emerge from the theory of strong interactions between quarks....

  • The contribution of valence quarks in the nucleon GE and GM. Nikkhoo, Negin Sattary; Shojaei, Mohammad Reza // International Journal of Modern Physics A: Particles & Fields; G;2019, Vol. 34 Issue 27, pN.PAG 

    The goal of this paper is to extract the flavor decomposition of nucleon electromagnetic form factor using the modified Gaussian and extended Regge ansatzes in the GPDs. We consider the CJ15 and JR09 parton distribution functions for both of these ansatzes in calculating the nucleon elastic form...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics