Search for CP violation in tt¯ production and decay in proton-proton collisions at √s=8 TeV
: The results of a first search for CP violation in the production and decay of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in T-odd, triple-product correlation observables, where T is the time-reversal operator. The analysis uses a sample of proton-proton co...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Springer Nature
2017
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/63064/1/63064_Search%20for%20CP%20violation%20in%20tt%C2%AF%20production_article.pdf http://irep.iium.edu.my/63064/2/63064_Search%20for%20CP%20violation%20in%20tt%C2%AF%20production_scopus.pdf http://irep.iium.edu.my/63064/ https://link.springer.com/content/pdf/10.1007%2FJHEP03%282017%29101.pdf |
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| Summary: | : The results of a first search for CP violation in the production and decay
of top quark-antiquark (tt¯) pairs are presented. The search is based on asymmetries in
T-odd, triple-product correlation observables, where T is the time-reversal operator. The
analysis uses a sample of proton-proton collisions at √
s = 8 TeV collected by the CMS
experiment, corresponding to an integrated luminosity of 19.7 fb−1
. Events are selected
having one electron or muon and at least four jets. The T-odd observables are measured
using four-momentum vectors associated with tt¯ production and decay. The measured
asymmetries exhibit no evidence for CP-violating effects, consistent with the expectation
from the standard model. |
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