First measurement of the CP-violating phase in B0s→J/ψ( →e+e−)ϕ decays; The European Physical Journal C; Vol. 81, iss. 11
| Parent link: | The European Physical Journal C Vol. 81, iss. 11.— 2021.— [1026, 18 p.] |
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| Kurumsal yazarlar: | , |
| Diğer Yazarlar: | , , , , |
| Özet: | Title screen A flavour-tagged time-dependent angular analysis of B0s→J/ψϕ decays is presented where the J/ψJ/ψ meson is reconstructed through its decay to an e+e− pair. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8\,Te V, corresponding to an integrated luminosity of 3\,fb−1. The CP-violating phase and lifetime parameters of the B0s system are measured to be ϕs=0.00±0.28±0.07\,rad, ΔΓs=0.115±0.045±0.011\,ps−1 and Γs=0.608±0.018±0.012\,ps−1 where the first uncertainty is statistical and the second systematic. This is the first time that CP-violating parameters are measured in the B0s→J/ψϕ decay with an e+e− pair in the final state. The results are consistent with previous measurements in other channels and with the Standard Model predictions. |
| Dil: | İngilizce |
| Baskı/Yayın Bilgisi: |
2021
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| Konular: | |
| Online Erişim: | http://earchive.tpu.ru/handle/11683/72494 https://doi.org/10.1140/epjc/s10052-021-09711-7 |
| Materyal Türü: | Elektronik Kitap Bölümü |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666718 |
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| 200 | 1 | |a First measurement of the CP-violating phase in B0s→J/ψ( →e+e−)ϕ decays |f R. Aaij, C. B. Beteta, S. I. Eydelman [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 57 tit.] | ||
| 330 | |a A flavour-tagged time-dependent angular analysis of B0s→J/ψϕ decays is presented where the J/ψJ/ψ meson is reconstructed through its decay to an e+e− pair. The analysis uses a sample of pp collision data recorded with the LHCb experiment at centre-of-mass energies of 7 and 8\,Te V, corresponding to an integrated luminosity of 3\,fb−1. The CP-violating phase and lifetime parameters of the B0s system are measured to be ϕs=0.00±0.28±0.07\,rad, ΔΓs=0.115±0.045±0.011\,ps−1 and Γs=0.608±0.018±0.012\,ps−1 where the first uncertainty is statistical and the second systematic. This is the first time that CP-violating parameters are measured in the B0s→J/ψϕ decay with an e+e− pair in the final state. The results are consistent with previous measurements in other channels and with the Standard Model predictions. | ||
| 461 | |t The European Physical Journal C | ||
| 463 | |t Vol. 81, iss. 11 |v [1026, 18 p.] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
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| 701 | 1 | |a Eydelman |b S. I. |g Semen Isaakovich | |
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