Quantum coherence, top transverse polarisation and the Tevatron asymmetry AFBℓ
We revisit the relation between the asymmetries AFB and AFBℓ in tt¯ production at the Tevatron, using as new physics benchmark a colour octet. We find that AFBℓ receives large contributions from the interference between λ=±1/2 top helicity states, which has been ignored in some of the previous liter...
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| Format: | Article |
| Language: | English |
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Elsevier
2014-09-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269314004997 |