Observation of the doubly Cabibbo-suppressed decay Ξ+c → pϕ; Journal of High Energy Physics; Vol. 2019, iss. 4
| Parent link: | Journal of High Energy Physics Vol. 2019, iss. 4.— 2019.— [84, 17 p.] |
|---|---|
| مؤلفون مشاركون: | , |
| مؤلفون آخرون: | , , , , , |
| الملخص: | Title screen The doubly Cabibbo-suppressed decay Ξ+c → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The ratio of branching fractions between the decay Ξ+c → pϕ and the singly Cabibbo-suppressed decay Ξ+c → pK−π+ is measured to beB(Ξ+c→pϕ)B(Ξ+c→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,B(Ξc+→pϕ)B(Ξc+→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the ϕ → K+K− branching fraction. |
| اللغة: | الإنجليزية |
| منشور في: |
2019
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.1007/JHEP04(2019)084 |
| التنسيق: | MixedMaterials الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663383 |
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| 200 | 1 | |a Observation of the doubly Cabibbo-suppressed decay Ξ+c → pϕ |f R. Aaij, C. A. Beteta, B. Adeva [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 37 tit.] | ||
| 330 | |a The doubly Cabibbo-suppressed decay Ξ+c → pϕ with ϕ → K+K− is observed for the first time, with a statistical significance of more than fifteen standard deviations. The data sample used in this analysis corresponds to an integrated luminosity of 2 fb−1 recorded with the LHCb detector in pp collisions at a centre-of-mass energy of 8 TeV. The ratio of branching fractions between the decay Ξ+c → pϕ and the singly Cabibbo-suppressed decay Ξ+c → pK−π+ is measured to beB(Ξ+c→pϕ)B(Ξ+c→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,B(Ξc+→pϕ)B(Ξc+→pK−π+)=(19.8±0.7±0.9±0.2)×10−3,where the first uncertainty is statistical, the second systematic and the third due to the knowledge of the ϕ → K+K− branching fraction. | ||
| 461 | |t Journal of High Energy Physics | ||
| 463 | |t Vol. 2019, iss. 4 |v [84, 17 p.] |d 2019 | ||
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| 701 | 1 | |a Shapkin |b M. M. |g Mikhail Mikhaylovich | |
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| 856 | 4 | |u https://doi.org/10.1007/JHEP04(2019)084 | |
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