Higher twist analysis of the proton g1 structure function
We perform a global analysis of all available spin-dependent proton structure function data, covering a large range of Q2, 1⩽Q2⩽30 GeV2, and calculate the lowest moment of the g1 structure function as a function of Q2. From the Q2 dependence of the lowest moment we extract matrix elements of twist-4...
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Published in | Physics letters. B Vol. 609; no. 3-4; pp. 259 - 264 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
10.03.2005
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | We perform a global analysis of all available spin-dependent proton structure function data, covering a large range of Q2, 1⩽Q2⩽30 GeV2, and calculate the lowest moment of the g1 structure function as a function of Q2. From the Q2 dependence of the lowest moment we extract matrix elements of twist-4 operators, and determine the color electric and magnetic polarizabilities of the proton to be χE=0.026±0.015(stat)±0.0240.021(sys) and χB=−0.013∓0.007(stat)∓0.0120.010(sys), respectively. |
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ISSN: | 0370-2693 1873-2445 |
DOI: | 10.1016/j.physletb.2005.01.071 |