Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-09-27
Proceeding of DAE-BRNS symposium, Vol. 56, 266 (2011)
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
Statistical approach for proton and neutron have been used to study the low energy properties of nucleons. Nucleons is assumed as a composite system of three quarks and "sea" where sea is assumed to be in S-wave consisting of quark-antiquark pairs (u]\bar{u},d\bar{d} only) and gluons. Here the contributions from scalar, vector and tensor sea is taken into consideration to find {\alpha} and {\beta}. Distribution of spin among valence quarks and sea-quark for proton and neutron are denoted by I_1^pand I_1^n respectively. Statistical model predicted the values as 0.132 and -0.011 which is close to EMC experimental value 0.136 and -0.013 for I_1^p and I_1^n respectively. Although the statistical model predictions give close to EMC data for neutron spin distribution. The results have also been compared with the Simple quark model results that matches well with SU(6) model..
Batra M.
Upadhyay Alka
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