Measurement of top quark polarisation in t-channel single top quark production
| dc.contributor.author | CMS Collaboration | |
| dc.date.accessioned | 2017-10-05T20:34:46Z | |
| dc.date.available | 2017-10-05T20:34:46Z | |
| dc.date.issued | 2016-04-13 | |
| dc.identifier.citation | The CMS collaboration, Khachatryan, V., Sirunyan, A.M. et al. J. High Energ. Phys. (2016) 2016: 73. https://doi.org/10.1007/JHEP04(2016)073 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1808/25092 | |
| dc.description.abstract | first measurement of the top quark spin asymmetry, sensitive to the top quark polarisation, in t-channel single top quark production is presented. It is based on a sample of pp collisions at a centre-of-mass energy of 8 TeV corresponding to an integrated luminosity of 19.7 fb−1. A high-purity sample of t-channel single top quark events with an isolated muon is selected. Signal and background components are estimated using a fit to data. A differential cross section measurement, corrected for detector effects, of an angular observable sensitive to the top quark polarisation is performed. The differential distribution is used to extract a top quark spin asymmetry of 0.26 ± 0.03(stat) ± 0.10(syst), which is compatible with a p-value of 4.6% with the standard model prediction of 0.44. | en_US |
| dc.publisher | Springer Verlag | en_US |
| dc.rights | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | en_US |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.subject | Top physics | en_US |
| dc.title | Measurement of top quark polarisation in t-channel single top quark production | en_US |
| dc.type | Article | en_US |
| kusw.kudepartment | Physics and Astronomy | en_US |
| dc.identifier.doi | 10.1007/JHEP04(2016)073 | en_US |
| kusw.oaversion | Scholarly/refereed, publisher version | en_US |
| kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
| dc.rights.accessrights | openAccess |
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