Measurement of the time-integrated CP asymmetry in D0 → K S 0 K S 0 decays

Measurement of the time-integrated CP asymmetry in D0 → K S 0 K S 0 decays

Bibliographic Details
Parent link:	Journal of High Energy Physics № 11.— 2018.— [48, 18 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР)
Other Authors:	Aaij R. Roel, Adeva B. Bernardo, Adinolfi M. Marco, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich, Vagner A. R. Aleksandr Rudolfovich
Summary:	Title screen A measurement of the time-integrated CP asymmetry in D0 → K S 0 K S 0 decays is reported. The data correspond to an integrated luminosity of about 2 fb−1 collected in 2015-2016 by the LHCb collaboration in pp collisions at a centre-of-mass energy of 13 TeV. The D0 candidate is required to originate from a D*+ → D0π+ decay, allowing the determination of the flavour of the D0 meson using the pion charge. The D0 → K+K− decay, which has a well measured CPasymmetry, is used as a calibration channel. The CP asymmetryfor D0 → K S 0 K S 0 is measured to beACP(D0→K0SK0S)=(4.3±3.4±1.0)%,ACP(D0→KS0KS0)=(4.3±3.4±1.0)%, where the first uncertainty is statistical and the second is systematic. This result is combined with the previous LHCb measurement at lower centre-of-mass energies to obtainACP(D0→K0SK0S)=(2.3±2.8±0.9)%.
Language:	English
Published:	2018
Subjects:	электронный ресурс труды учёных ТПУ физика адронное взаимодействие
Online Access:	http://earchive.tpu.ru/handle/11683/57783 https://doi.org/10.1007/JHEP11(2018)048
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658845

Internet

http://earchive.tpu.ru/handle/11683/57783
https://doi.org/10.1007/JHEP11(2018)048