Observation of the semileptonic decay B+→pp¯¯¯μ+νμ; Journal of High Energy Physics; Vol. 2020, iss. 3
| Parent link: | Journal of High Energy Physics Vol. 2020, iss. 3.— 2020.— [146, 21 p.] |
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| Institutionella upphovsmän: | , |
| Övriga upphovsmän: | , , , , |
| Sammanfattning: | Title screen The Cabibbo-suppressed semileptonic decay B+→pp¯¯¯μ+νμB+→pp¯μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯¯¯pp¯ invariant mass using the decay mode B+→ J/ψK+ for normalisation. The total branching fraction is measured to beB(B+→pp¯¯¯μ+νμ)=(5.27+0.23−0.24±0.21±0.15)×10−6,B(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6,where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. |
| Språk: | engelska |
| Publicerad: |
2020
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| Ämnen: | |
| Länkar: | https://doi.org/10.1007/JHEP03(2020)146 |
| Materialtyp: | Elektronisk Bokavsnitt |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=662339 |
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| 200 | 1 | |a Observation of the semileptonic decay B+→pp¯¯¯μ+νμ |f R. Aaij, C. A. Beteta, A. E. Kharisova [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 42 tit.] | ||
| 330 | |a The Cabibbo-suppressed semileptonic decay B+→pp¯¯¯μ+νμB+→pp¯μ+νμ is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb−1 at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯¯¯pp¯ invariant mass using the decay mode B+→ J/ψK+ for normalisation. The total branching fraction is measured to beB(B+→pp¯¯¯μ+νμ)=(5.27+0.23−0.24±0.21±0.15)×10−6,B(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6,where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2020, iss. 3 |v [146, 21 p.] |d 2020 | ||
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| 610 | 1 | |a flavor physics | |
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