Valence quark polarization in the nucleon and the deuteron data
سال
: 2008
چکیده: Within the framework of the so-called valon model, we argue that a substantial part of the nucleon spin,
about 40%, is carried by the polarized valence quarks. The remaining is the result of cancelations between gluon polarization and the orbital angular momentum, where the gluon polarization is the dominant one. It is shown that the sea quark contributions to the spin of any hadron is simply marginal and consistent with zero. Our findings point to a substantially smaller value for a8 than inferred from hyperon β decay, suggesting that full SU(3) symmetric assumption needs to be reconsidered. New and emerging experimental data tend to support this finding. Finally, we show that within the model presented here the experimental data on the polarized structure functions g1,n,d are reproduced.
about 40%, is carried by the polarized valence quarks. The remaining is the result of cancelations between gluon polarization and the orbital angular momentum, where the gluon polarization is the dominant one. It is shown that the sea quark contributions to the spin of any hadron is simply marginal and consistent with zero. Our findings point to a substantially smaller value for a8 than inferred from hyperon β decay, suggesting that full SU(3) symmetric assumption needs to be reconsidered. New and emerging experimental data tend to support this finding. Finally, we show that within the model presented here the experimental data on the polarized structure functions g1,n,d are reproduced.
کلیدواژه(گان): nucleon structure-valence quark polarization-spin
کالکشن
:
-
آمار بازدید
Valence quark polarization in the nucleon and the deuteron data
Show full item record
contributor author | Firooz Arash | en |
contributor author | سیده فاطمه تقوی شهری | en |
contributor author | Seyyedeh Fatemeh Taghavi Shahri | fa |
date accessioned | 2020-06-06T13:19:17Z | |
date available | 2020-06-06T13:19:17Z | |
date issued | 2008 | |
identifier uri | http://libsearch.um.ac.ir:80/fum/handle/fum/3350064 | |
description abstract | Within the framework of the so-called valon model, we argue that a substantial part of the nucleon spin, about 40%, is carried by the polarized valence quarks. The remaining is the result of cancelations between gluon polarization and the orbital angular momentum, where the gluon polarization is the dominant one. It is shown that the sea quark contributions to the spin of any hadron is simply marginal and consistent with zero. Our findings point to a substantially smaller value for a8 than inferred from hyperon β decay, suggesting that full SU(3) symmetric assumption needs to be reconsidered. New and emerging experimental data tend to support this finding. Finally, we show that within the model presented here the experimental data on the polarized structure functions g1,n,d are reproduced. | en |
language | English | |
title | Valence quark polarization in the nucleon and the deuteron data | en |
type | Journal Paper | |
contenttype | External Fulltext | |
subject keywords | nucleon structure-valence quark polarization-spin | en |
journal title | Physics Letters B | fa |
pages | 193-196 | |
journal volume | 668 | |
journal issue | 3 | |
identifier link | https://profdoc.um.ac.ir/paper-abstract-1042100.html | |
identifier articleid | 1042100 |