> Details
Aaij, Roel
[Author];
Bachmann, Sebastian
[Author];
Berninghoff, Daniel
[Author];
Borsato, Martino
[Author];
Braun, Svende
[Author];
Comerma-Montells, Albert
[Author];
D'Argent, Philippe
[Author];
Dziewiecki, Michal
[Author];
Gerick, David
[Author];
Grabowski, Jascha
[Author];
Han, Xiaoxue
[Author];
Hansmann-Menzemer, Stephanie
[Author];
Kecke, Matthieu
[Author];
Kolpin, Michael
[Author];
Kopecná, Renata
[Author];
Leverington, Blake
[Author];
Malygina, Hanna
[Author];
Marks, Jörg
[Author];
Mitzel, Dominik
[Author];
Neubert, Sebastian
[Author];
Piucci, Alessio
[Author];
Schmelling, Michael
[Author];
Skidmore, Nicola
[Author];
Stahl, Marian
[Author];
[...]
;
LHCb Collaboration
Measurement of CP violation in the B0s → [phi phi] decay and search for the B0→ [phi phi] decay
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- Media type: E-Article
- Title: Measurement of CP violation in the B0s → [phi phi] decay and search for the B0→ [phi phi] decay
- Contributor: Aaij, Roel [VerfasserIn]; Bachmann, Sebastian [VerfasserIn]; Berninghoff, Daniel [VerfasserIn]; Borsato, Martino [VerfasserIn]; Braun, Svende [VerfasserIn]; Comerma-Montells, Albert [VerfasserIn]; D'Argent, Philippe [VerfasserIn]; Dziewiecki, Michal [VerfasserIn]; Gerick, David [VerfasserIn]; Grabowski, Jascha [VerfasserIn]; Han, Xiaoxue [VerfasserIn]; Hansmann-Menzemer, Stephanie [VerfasserIn]; Kecke, Matthieu [VerfasserIn]; Kolpin, Michael [VerfasserIn]; Kopecná, Renata [VerfasserIn]; Leverington, Blake [VerfasserIn]; Malygina, Hanna [VerfasserIn]; Marks, Jörg [VerfasserIn]; Mitzel, Dominik [VerfasserIn]; Neubert, Sebastian [VerfasserIn]; Piucci, Alessio [VerfasserIn]; Schmelling, Michael [VerfasserIn]; Skidmore, Nicola [VerfasserIn]; Stahl, Marian [VerfasserIn]; Stemmle, Simon [VerfasserIn]; Uwer, Ulrich [VerfasserIn]
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imprint:
December 23, 2019
- Published in: Journal of high energy physics ; (2019,12) Artikel-Nummer 155, 44 Seiten
- Language: English
- DOI: 10.1007/JHEP12(2019)155
- ISSN: 1029-8479
- Identifier:
- Origination:
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Footnote:
The LHCb collaboration: R. Aaij, S. Bachmann, D. Berninghoff, M. Borsato, S. Braun, J. A. Comerma-Montells, P. d'Argent, M. Dziewiecki, D. Gerick, J.P. Grabowski, X. Han, S. Hansmann-Menzemer, M. Kecke, M. Kolpin, R. Kopecna, B. Leverington, H. Malygina, J. Marks, D.S. Mitzel, S. Neubert, A. Piucci, Skidmore, S. Stahl, S. Stemmle, U. Uwer, M. Zavertyaevc [und 847 weitere Autoren]
Im Titel ist "s" tiefgestellt, "0" hochgestellt
- Description: A measurement of the time-dependent CP-violating asymmetry in Bs0→ϕϕ$$ {B}_s^0\to \phi \phi $$ 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$$ \sqrt{s} $$ = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 Bs0→ϕϕ$$ {B}_s^0\to \phi \phi $$ decays is obtained. The CP-violating phase ϕsss¯s$$ {\phi}_s^{s\overline{s}s} $$ 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¯s$$ \overline{b}\to \overline{s}s\overline{s}s $$ transitions. Finally, a limit on the branching fraction of the B0 → ϕϕ decay is determined to be BB0→ϕϕ<2.7×10−8$$ \mathcal{B}\left({B}^0\to \phi \phi \right)<2.7\times {10}^{-8} $$ at 90 % confidence level.
- Access State: Open Access