Measurement of CP violation in the B0s→ϕϕBs0→ϕϕ decay and search for the B0→ ϕϕ decay; Journal of High Energy Physics; Vol. 2019, iss. 12
| Parent link: | Journal of High Energy Physics Vol. 2019, iss. 12.— 2019.— [155, 32 p.] |
|---|---|
| Korporace: | , |
| Další autoři: | , , , , , , |
| Shrnutí: | Title screen A measurement of the time-dependent CP-violating asymmetry in B0s→ϕϕBs0→ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb−1 collected by the LHCb experiment at centre-of-mass energies s√s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 B0s→ϕϕBs0→ϕϕ decays is obtained. The CP-violating phase ϕss¯¯¯ssϕsss¯s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b¯¯→s¯¯¯ss¯¯¯sb¯→s¯ss¯s transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be B(B0→ϕϕ)<2.7×10−8B(B0→ϕϕ)<2.7×10−8 at 90 % confidence level. |
| Jazyk: | angličtina |
| Vydáno: |
2019
|
| Témata: | |
| On-line přístup: | https://doi.org/10.1007/JHEP12(2019)155 |
| Médium: | Elektronický zdroj Kapitola |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663527 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 663527 | ||
| 005 | 20260807071625.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\34697 | ||
| 090 | |a 663527 | ||
| 100 | |a 20210218d2019 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a US | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Measurement of CP violation in the B0s→ϕϕBs0→ϕϕ decay and search for the B0→ ϕϕ decay |f R. Aaij, C. A. Beteta, B. Adeva [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 60 tit.] | ||
| 330 | |a A measurement of the time-dependent CP-violating asymmetry in B0s→ϕϕBs0→ϕϕ decays is presented. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 5.0 fb−1 collected by the LHCb experiment at centre-of-mass energies s√s = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 B0s→ϕϕBs0→ϕϕ decays is obtained. The CP-violating phase ϕss¯¯¯ssϕsss¯s is measured to be −0.073 ± 0.115(stat) ± 0.027(syst) rad, under the assumption it is independent of the helicity of the ϕϕ decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |λ| = 0.99 ± 0.05(stat) ± 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b¯¯→s¯¯¯ss¯¯¯sb¯→s¯ss¯s transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be B(B0→ϕϕ)<2.7×10−8B(B0→ϕϕ)<2.7×10−8 at 90 % confidence level. | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2019, iss. 12 |v [155, 32 p.] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a Hadron-Hadron scattering (experiments) | |
| 701 | 1 | |a Aaij |b R. |g Roel | |
| 701 | 1 | |a Beteta |b C. A. |g Carlos Abellan | |
| 701 | 1 | |a Adeva |b B. |g Bernardo | |
| 701 | 1 | |a Eydelman |b S. I. |g Semen Isaakovich | |
| 701 | 1 | |a Kharisova |b A. E. |c nuclear technology specialist |c engineer of Tomsk Polytechnic University |f 1994- |g Anastasiya Evgenjevna |3 (RuTPU)RU\TPU\pers\46775 |9 22411 | |
| 701 | 1 | |a Panshin |b G. L. |c specialist in the field of informatics and computer technology |c Senior Lecturer at Tomsk Polytechnic University |f 1987- |g Gennady Leonidovich |3 (RuTPU)RU\TPU\pers\40978 |9 21367 | |
| 701 | 1 | |a Strokov |b S. A. |c physicist |c engineer of Tomsk Polytechnic University |f 1977- |g Sergey Aleksandrovich |3 (RuTPU)RU\TPU\pers\37442 |9 20329 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа информационных технологий и робототехники |c 2017- |x TPU |7 ca |8 rus |9 28330 |
| 801 | 2 | |a RU |b 63413507 |c 20210226 |g RCR | |
| 850 | |a 63413507 | ||
| 856 | 4 | |u https://doi.org/10.1007/JHEP12(2019)155 | |
| 942 | |c CF | ||