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

The Lhcb Collaboration

Research output: Contribution to journalArticle

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 + K branching fraction.[Figure not available: see fulltext.]

Original languageEnglish (US)
Article number84
JournalJournal of High Energy Physics
Volume2019
Issue number4
DOIs
StatePublished - Apr 1 2019

Fingerprint

decay
center of mass
standard deviation
luminosity
collisions
detectors
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Observation of the doubly Cabibbo-suppressed decay Ξ c + → pϕ . / The Lhcb Collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 4, 84, 01.04.2019.

Research output: Contribution to journalArticle

@article{fbbeb9d6697b414ca636c5ca78a9b33c,
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 + K − branching fraction.[Figure not available: see fulltext.]",
keywords = "Branching fraction, Charm physics, Flavor physics, Hadron-Hadron scattering (experiments)",
author = "{The 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’Argent and {Arnau Romeu}, J. and A. Artamonov and Marina Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and Barrand, {G. C.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and Blusk, {Steven Roy} and Matthew Rudolph and Tomasz Skwarnicki and Sheldon Stone",
year = "2019",
month = "4",
day = "1",
doi = "10.1007/JHEP04(2019)084",
language = "English (US)",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "4",

}

TY - JOUR

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

AU - The 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, Marina

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barrand, G. C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Blusk, Steven Roy

AU - Rudolph, Matthew

AU - Skwarnicki, Tomasz

AU - Stone, Sheldon

PY - 2019/4/1

Y1 - 2019/4/1

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 + K − branching fraction.[Figure not available: see fulltext.]

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 + K − branching fraction.[Figure not available: see fulltext.]

KW - Branching fraction

KW - Charm physics

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

UR - http://www.scopus.com/inward/record.url?scp=85064530228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064530228&partnerID=8YFLogxK

U2 - 10.1007/JHEP04(2019)084

DO - 10.1007/JHEP04(2019)084

M3 - Article

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 4

M1 - 84

ER -