Measurement of the charge asymmetry in highly boosted top-quark pair production in √s = 8 TeV pp collision data collected by the ATLAS experiment
In the View the MathML sourcepp→tt¯ process the angular distributions of top and anti-top quarks are expected to present a subtle difference, which could be enhanced by processes not included in the Standard Model. This Letter presents a measurement of the charge asymmetry in events where the top-qu...
| Published in: | Physics Letters B Vol. 756. P. 52-71 |
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| Other Authors: | , , , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000579989 Перейти в каталог НБ ТГУ |
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| 008 | 170710|2016 xxu s a eng d | ||
| 024 | 7 | |a 10.1016/j.physletb.2016.02.055 |2 doi | |
| 035 | |a to000579989 | ||
| 039 | 9 | |a 201707121303 |b 100 |c 201707101505 |d VLOAD |y 201707101413 |z Александр Эльверович Гилязов | |
| 040 | |a RU-ToGU |b rus |c RU-ToGU | ||
| 245 | 1 | 0 | |a Measurement of the charge asymmetry in highly boosted top-quark pair production in √s = 8 TeV pp collision data collected by the ATLAS experiment |c G. Aad, B. Abbott, J. Abdallah [et al.] |
| 520 | 3 | |a In the View the MathML sourcepp→tt¯ process the angular distributions of top and anti-top quarks are expected to present a subtle difference, which could be enhanced by processes not included in the Standard Model. This Letter presents a measurement of the charge asymmetry in events where the top-quark pair is produced with a large invariant mass. The analysis is performed on 20.3 fb−1 of pp collision data at View the MathML sources=8TeV collected by the ATLAS experiment at the LHC, using reconstruction techniques specifically designed for the decay topology of highly boosted top quarks. The charge asymmetry in a fiducial region with large invariant mass of the top-quark pair (View the MathML sourcemtt¯>0.75 TeV) and an absolute rapidity difference of the top and anti-top quark candidates within View the MathML source−2<|yt|−|yt¯|<2 is measured to be 4.2±3.2%4.2±3.2%, in agreement with the Standard Model prediction at next-to-leading order. A differential measurement in three View the MathML sourcett¯ mass bins is also presented. | |
| 653 | |a ATLAS, детектор | ||
| 653 | |a верхние кварки | ||
| 653 | |a Большой адронный коллайдер | ||
| 655 | 4 | |a статьи в журналах |9 879358 | |
| 700 | |a Aad, G |9 116039 | ||
| 700 | 1 | |a Abdallah, J. |9 116040 | |
| 700 | 1 | |a Chelkov, G. A. |9 96983 | |
| 700 | 1 | |a Abbott, B. |9 116041 | |
| 773 | 0 | |t Physics Letters B |d 2016 |g Vol. 756. P. 52-71 |x 0370-2693 | |
| 852 | 4 | |a RU-ToGU | |
| 856 | 7 | |u http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000579989 | |
| 856 | |y Перейти в каталог НБ ТГУ |u https://koha.lib.tsu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=422307 | ||
| 908 | |a статья | ||
| 999 | |c 422307 |d 422307 | ||