Sivers function of sea quarks in the light-cone model
We calculate the Sivers function of u¯ and d¯ quarks using the overlap representation within the light-cone formalism. The light-cone wave functions of the proton are obtained in terms of the |q¯qB〉 Fock states motivated by the meson-baryon fluctuation model. We consider the final-state interaction...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322004336 |
| _version_ | 1797998983179665408 |
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| author | Xiaoyan Luan Zhun Lu |
| author_facet | Xiaoyan Luan Zhun Lu |
| author_sort | Xiaoyan Luan |
| collection | DOAJ |
| description | We calculate the Sivers function of u¯ and d¯ quarks using the overlap representation within the light-cone formalism. The light-cone wave functions of the proton are obtained in terms of the |q¯qB〉 Fock states motivated by the meson-baryon fluctuation model. We consider the final-state interaction at the level of one gluon exchange. In a simplified scenario, the Sivers function of u¯ and d¯ can be expressed as the convolution of the Sivers function of the pion inside the proton and the unpolarized distribution of q¯ inside the pion. The model parameters are fixed by fitting the unpolarized sea quark distributions to the known parameterizations. We present the numerical results for f1⊥u¯/p(x,kT2) and f1⊥d¯/p(x,kT2). The first transverse moment of the sea quark Sivers functions in our model are find to be negative and the magnitude is about 0.004 at most. |
| first_indexed | 2024-04-11T10:57:29Z |
| format | Article |
| id | doaj.art-6f41132a89454dd6bf0529e2eecc78fe |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-11T10:57:29Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-6f41132a89454dd6bf0529e2eecc78fe2022-12-22T04:28:44ZengElsevierPhysics Letters B0370-26932022-10-01833137299Sivers function of sea quarks in the light-cone modelXiaoyan Luan0Zhun Lu1School of Physics, Southeast University, Nanjing 211189, ChinaCorresponding author.; School of Physics, Southeast University, Nanjing 211189, ChinaWe calculate the Sivers function of u¯ and d¯ quarks using the overlap representation within the light-cone formalism. The light-cone wave functions of the proton are obtained in terms of the |q¯qB〉 Fock states motivated by the meson-baryon fluctuation model. We consider the final-state interaction at the level of one gluon exchange. In a simplified scenario, the Sivers function of u¯ and d¯ can be expressed as the convolution of the Sivers function of the pion inside the proton and the unpolarized distribution of q¯ inside the pion. The model parameters are fixed by fitting the unpolarized sea quark distributions to the known parameterizations. We present the numerical results for f1⊥u¯/p(x,kT2) and f1⊥d¯/p(x,kT2). The first transverse moment of the sea quark Sivers functions in our model are find to be negative and the magnitude is about 0.004 at most.http://www.sciencedirect.com/science/article/pii/S0370269322004336 |
| spellingShingle | Xiaoyan Luan Zhun Lu Sivers function of sea quarks in the light-cone model Physics Letters B |
| title | Sivers function of sea quarks in the light-cone model |
| title_full | Sivers function of sea quarks in the light-cone model |
| title_fullStr | Sivers function of sea quarks in the light-cone model |
| title_full_unstemmed | Sivers function of sea quarks in the light-cone model |
| title_short | Sivers function of sea quarks in the light-cone model |
| title_sort | sivers function of sea quarks in the light cone model |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322004336 |
| work_keys_str_mv | AT xiaoyanluan siversfunctionofseaquarksinthelightconemodel AT zhunlu siversfunctionofseaquarksinthelightconemodel |