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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer
2017-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-4770-4 |