Target mass effects in parton quasi-distributions
We study the impact of non-zero (and apparently large) value of the nucleon mass M on the shape of parton quasi-distributions Q(y,p3), in particular on its change with the change of the nucleon momentum p3. We observe that the usual target-mass corrections induced by the M-dependence of the twist-2...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-07-01
|
| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269317303878 |
| id |
doaj-89a97a17f28c47f280949b9d9fd2008f |
|---|---|
| record_format |
Article |
| spelling |
doaj-89a97a17f28c47f280949b9d9fd2008f2020-11-24T22:37:41ZengElsevierPhysics Letters B0370-26931873-24452017-07-01770C51452210.1016/j.physletb.2017.05.024Target mass effects in parton quasi-distributionsA.V. Radyushkin0Physics Department, Old Dominion University, Norfolk, VA 23529, USAWe study the impact of non-zero (and apparently large) value of the nucleon mass M on the shape of parton quasi-distributions Q(y,p3), in particular on its change with the change of the nucleon momentum p3. We observe that the usual target-mass corrections induced by the M-dependence of the twist-2 operators are rather small. Moreover, we show that within the framework based on parametrizations by transverse momentum dependent distribution functions (TMDs) these corrections are canceled by higher-twist contributions. We identify a novel source of kinematic target-mass dependence of TMDs and build models corrected for such dependence. We find that resulting changes may be safely neglected for p3≳2M.http://www.sciencedirect.com/science/article/pii/S0370269317303878 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
A.V. Radyushkin |
| spellingShingle |
A.V. Radyushkin Target mass effects in parton quasi-distributions Physics Letters B |
| author_facet |
A.V. Radyushkin |
| author_sort |
A.V. Radyushkin |
| title |
Target mass effects in parton quasi-distributions |
| title_short |
Target mass effects in parton quasi-distributions |
| title_full |
Target mass effects in parton quasi-distributions |
| title_fullStr |
Target mass effects in parton quasi-distributions |
| title_full_unstemmed |
Target mass effects in parton quasi-distributions |
| title_sort |
target mass effects in parton quasi-distributions |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 1873-2445 |
| publishDate |
2017-07-01 |
| description |
We study the impact of non-zero (and apparently large) value of the nucleon mass M on the shape of parton quasi-distributions Q(y,p3), in particular on its change with the change of the nucleon momentum p3. We observe that the usual target-mass corrections induced by the M-dependence of the twist-2 operators are rather small. Moreover, we show that within the framework based on parametrizations by transverse momentum dependent distribution functions (TMDs) these corrections are canceled by higher-twist contributions. We identify a novel source of kinematic target-mass dependence of TMDs and build models corrected for such dependence. We find that resulting changes may be safely neglected for p3≳2M. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269317303878 |
| work_keys_str_mv |
AT avradyushkin targetmasseffectsinpartonquasidistributions |
| _version_ |
1725715883064557568 |