Observation of the doubly Cabibbo-suppressed decay Ξ                                                 c+→pϕ

LHCb Collaboration

doi:10.1007/JHEP04(2019)084

Observation of the doubly Cabibbo-suppressed decay Ξ _c⁺→pϕ

LHCb Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

156 Downloads (Pure)

Abstract

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 be

ℬ(Ξ_c⁺→pϕ)/ℬ(Ξ_c⁺→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⁺⁻ branching fraction.

Original language	English
Article number	84
Number of pages	18
Journal	Journal of High Energy Physics
Volume	2019
Issue number	4
DOIs	https://doi.org/10.1007/JHEP04(2019)084
Publication status	Published - 10 Apr 2019

Keywords

Branching fraction
Charm physics
Flavor physics
Hadron-Hadron scattering (experiments)

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP04(2019)084Licence: Creative Commons: Attribution (CC BY)

LHCb_Collab_Observation_Of_The_Doubly_Cabibbo_JHEP
Checked for eligibility:14/05/2019 The LHCb collaboration, Aaij, R., Abellán Beteta, C. et al. J. High Energ. Phys. (2019) 2019: 84. https://doi.org/10.1007/JHEP04(2019)084
Final published version, 453 KBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{e52559e51f4a4c3e96d45ec3ba650fc4,

title = "Observation of the doubly Cabibbo-suppressed decay Ξ c+→pϕ",

abstract = " 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(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+− branching fraction.",

keywords = "Branching fraction, Charm physics, Flavor physics, Hadron-Hadron scattering (experiments)",

author = "{LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Farley and P. Griffith and P. Ilten and C. Lazzeroni and A. Mazurov and L. Pescatore and J. Plews and D. Popov and A. Sergi and Slater, {M. W.} and Watson, {N. K.} and T. Williams and Zarebski, {K. A.}",

year = "2019",

month = apr,

day = "10",

doi = "10.1007/JHEP04(2019)084",

language = "English",

volume = "2019",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "4",

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TY - JOUR

T1 - Observation of the doubly Cabibbo-suppressed decay Ξ c+→pϕ

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - Pescatore, L.

AU - Plews, J.

AU - Popov, D.

AU - Sergi, A.

AU - Slater, M. W.

AU - Watson, N. K.

AU - Williams, T.

AU - Zarebski, K. A.

PY - 2019/4/10

Y1 - 2019/4/10

N2 - 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(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+− branching fraction.

AB - 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(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+− branching fraction.

KW - Branching fraction

KW - Charm physics

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

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U2 - 10.1007/JHEP04(2019)084

DO - 10.1007/JHEP04(2019)084

M3 - Article

AN - SCOPUS:85064530228

SN - 1126-6708

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 4

M1 - 84

ER -

Observation of the doubly Cabibbo-suppressed decay Ξ c+→pϕ