Energy–energy correlation in electron–positron annihilation at NNLL + NNLO accuracy
Abstract We present the computation of energy–energy correlation in $$e^+e^-$$ e + e - collisions in the back-to-back region at next-to-next-to-leading logarithmic accuracy matched with the next-to-next-to-leading order perturbative prediction. We study the effect of the fixed higher-order correctio...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2017-11-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | http://link.springer.com/article/10.1140/epjc/s10052-017-5320-9 |
| Summary: | Abstract We present the computation of energy–energy correlation in $$e^+e^-$$ e + e - collisions in the back-to-back region at next-to-next-to-leading logarithmic accuracy matched with the next-to-next-to-leading order perturbative prediction. We study the effect of the fixed higher-order corrections in a comparison of our results to LEP and SLC data. The next-to-next-to-leading order correction has a sizable impact on the extracted value of $$\alpha _\mathrm{{S}}(M_Z$$ α S ( M Z ), hence its inclusion is mandatory for a precise measurement of the strong coupling using energy–energy correlation. |
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| ISSN: | 1434-6044 1434-6052 |