Measurements of the branching fractions of Λ c + → pπ − π +, Λ c + → pK−K+, and Λ c + → pπ −K+

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Measurements of the branching fractions of Λ _c ⁺ → pπ ⁻ π ⁺, Λ _c ⁺ → pK⁻K⁺, and Λ _c ⁺ → pπ ⁻K⁺. / The LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2018, No. 3, 43, 01.03.2018.

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

BibTeX

@article{2c8a6a5126004986897ffedd11b60c34,

title = "Measurements of the branching fractions of Λ c + → pπ − π +, Λ c + → pK−K+, and Λ c + → pπ −K+",

abstract = "The ratios of the branching fractions of the decays Λc + → pπ−π+, Λc + → pK−K+, and Λc + → pπ−K+ with respect to the Cabibbo-favoured Λc + → pK−π+ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb−1:ℬ(Λc+→p+)ℬ(Λc+→pK−π+)=(7.44±0.08±0.18)%,ℬ(Λc+→pK−K+)ℬ(Λc+→pK−π+)=(1.70±0.03±0.03)%ℬ(Λc+→pπ−K+)ℬ(Λc+→pK−π+)=(0.165±0.015±0.005)%,where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world-average value for ℬ(Λc+→pK−π+), the corresponding branching fractions areℬ(Λc+→p+)=(4.72±0.05±0.11±0.25)×10−3,ℬ(Λc+→pK−K+)=(1.08±0.02±0.02±0.06)×10−3,ℬ(Λc+→pπ−K+)=(1.04±0.09±0.03±0.05)×10−4,where the final uncertainty is due to ℬ(Λc+→pK−π+).",

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

author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali 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 Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and V. Batozskaya and A. Bondar and S. Eidelman and P. Krokovny and L. Shekhtman and V. Vorobyev",

note = "Publisher Copyright: {\textcopyright} 2018, The Author(s).",

year = "2018",

month = mar,

day = "1",

doi = "10.1007/JHEP03(2018)043",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "3",

}

RIS

TY - JOUR

T1 - Measurements of the branching fractions of Λ c + → pπ − π +, Λ c + → pK−K+, and Λ c + → pπ −K+

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

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 - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Shekhtman, L.

AU - Vorobyev, V.

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The ratios of the branching fractions of the decays Λc + → pπ−π+, Λc + → pK−K+, and Λc + → pπ−K+ with respect to the Cabibbo-favoured Λc + → pK−π+ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb−1:ℬ(Λc+→p+)ℬ(Λc+→pK−π+)=(7.44±0.08±0.18)%,ℬ(Λc+→pK−K+)ℬ(Λc+→pK−π+)=(1.70±0.03±0.03)%ℬ(Λc+→pπ−K+)ℬ(Λc+→pK−π+)=(0.165±0.015±0.005)%,where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world-average value for ℬ(Λc+→pK−π+), the corresponding branching fractions areℬ(Λc+→p+)=(4.72±0.05±0.11±0.25)×10−3,ℬ(Λc+→pK−K+)=(1.08±0.02±0.02±0.06)×10−3,ℬ(Λc+→pπ−K+)=(1.04±0.09±0.03±0.05)×10−4,where the final uncertainty is due to ℬ(Λc+→pK−π+).

AB - The ratios of the branching fractions of the decays Λc + → pπ−π+, Λc + → pK−K+, and Λc + → pπ−K+ with respect to the Cabibbo-favoured Λc + → pK−π+ decay are measured using proton-proton collision data collected with the LHCb experiment at a 7 TeV centre-of-mass energy and corresponding to an integrated luminosity of 1.0 fb−1:ℬ(Λc+→p+)ℬ(Λc+→pK−π+)=(7.44±0.08±0.18)%,ℬ(Λc+→pK−K+)ℬ(Λc+→pK−π+)=(1.70±0.03±0.03)%ℬ(Λc+→pπ−K+)ℬ(Λc+→pK−π+)=(0.165±0.015±0.005)%,where the uncertainties are statistical and systematic, respectively. These results are the most precise measurements of these quantities to date. When multiplied by the world-average value for ℬ(Λc+→pK−π+), the corresponding branching fractions areℬ(Λc+→p+)=(4.72±0.05±0.11±0.25)×10−3,ℬ(Λc+→pK−K+)=(1.08±0.02±0.02±0.06)×10−3,ℬ(Λc+→pπ−K+)=(1.04±0.09±0.03±0.05)×10−4,where the final uncertainty is due to ℬ(Λc+→pK−π+).

KW - Branching fraction

KW - Charm physics

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

KW - Spectroscopy

KW - CHARM

UR - http://www.scopus.com/inward/record.url?scp=85043711160&partnerID=8YFLogxK

U2 - 10.1007/JHEP03(2018)043

DO - 10.1007/JHEP03(2018)043

M3 - Article

AN - SCOPUS:85043711160

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 3

M1 - 43

ER -

ID: 10524661