Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories?
Abstract Double $$J/\psi $$ J / ψ production in $$e^+e^-$$ e + e - collisions involving color-octet channels are evaluated up to order $$\alpha ^2\alpha _s^3$$ α 2 α s 3 . Having implemented the variation of the parameters ( $$m_c$$ m c , $$\mu _r$$ μ r and long-distance matrix elements), we found t...
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| Series: | European Physical Journal C: Particles and Fields |
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| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-4770-4 |
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doaj-art-df28bb60c18249dab7e4c11d699bbb892018-08-20T15:23:15ZengSpringerEuropean Physical Journal C: Particles and Fields1434-60441434-60522017-04-017741710.1140/epjc/s10052-017-4770-4Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories?Yu Feng0Zhan Sun1Hong-Fei Zhang2Department of Physics, School of Biomedical Engineering, Third Military Medical UniversitySchool of Science, Guizhou Minzu UniversityDepartment of Physics, School of Biomedical Engineering, Third Military Medical UniversityAbstract Double $$J/\psi $$ J / ψ production in $$e^+e^-$$ e + e - collisions involving color-octet channels are evaluated up to order $$\alpha ^2\alpha _s^3$$ α 2 α s 3 . Having implemented the variation of the parameters ( $$m_c$$ m c , $$\mu _r$$ μ r and long-distance matrix elements), we found that the cross sections for producing double $$J/\psi $$ J / ψ at B-factories range from $$-0.016$$ - 0.016 to 0.245 fb, which are even much smaller than that via the color-singlet mechanism. Accordingly, this result is consistent with the measurement by the Belle and BABAR Collaborations.http://link.springer.com/article/10.1140/epjc/s10052-017-4770-4Pair ProductionTotal Cross SectionLeading OrderBABAR CollaborationDouble Production |
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| language |
English |
| format |
Article |
| author |
Yu Feng Zhan Sun Hong-Fei Zhang |
| spellingShingle |
Yu Feng Zhan Sun Hong-Fei Zhang Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? European Physical Journal C: Particles and Fields Pair Production Total Cross Section Leading Order BABAR Collaboration Double Production |
| author_facet |
Yu Feng Zhan Sun Hong-Fei Zhang |
| author_sort |
Yu Feng |
| title |
Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? |
| title_short |
Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? |
| title_full |
Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? |
| title_fullStr |
Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? |
| title_full_unstemmed |
Is the color-octet mechanism consistent with the double $$J/\psi $$ J / ψ production measurement at B-factories? |
| title_sort |
is the color-octet mechanism consistent with the double $$j/\psi $$ j / ψ production measurement at b-factories? |
| publisher |
Springer |
| series |
European Physical Journal C: Particles and Fields |
| issn |
1434-6044 1434-6052 |
| publishDate |
2017-04-01 |
| description |
Abstract Double $$J/\psi $$ J / ψ production in $$e^+e^-$$ e + e - collisions involving color-octet channels are evaluated up to order $$\alpha ^2\alpha _s^3$$ α 2 α s 3 . Having implemented the variation of the parameters ( $$m_c$$ m c , $$\mu _r$$ μ r and long-distance matrix elements), we found that the cross sections for producing double $$J/\psi $$ J / ψ at B-factories range from $$-0.016$$ - 0.016 to 0.245 fb, which are even much smaller than that via the color-singlet mechanism. Accordingly, this result is consistent with the measurement by the Belle and BABAR Collaborations. |
| topic |
Pair Production Total Cross Section Leading Order BABAR Collaboration Double Production |
| url |
http://link.springer.com/article/10.1140/epjc/s10052-017-4770-4 |
| _version_ |
1612687796516945920 |