First observation and branching fraction measurement of the Λb0→Ds−p decay

LHCb Collaboration

doi:10.1007/JHEP07(2023)075

First observation and branching fraction measurement of the Λ_b⁰→D_s⁻p decay

LHCb Collaboration

Physics and Astronomy

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

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Abstract

The first observation of the Λ_b⁰→D_s⁻p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of √s = 13 TeV, corresponding to a total integrated luminosity of 6 fb⁻¹. Using the Λ_b⁰→Λ_c⁺π⁻ decay as the normalisation mode, the branching fraction of the Λ_b⁰→D_s⁻p decay is measured to be B(Λ_b⁰→D_s⁻p)=(12.6±0.5±0.3±1.2)×10⁻⁶ , where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Λ_b⁰→Λ_c⁺π⁻ , D_s⁻→K⁻K⁺π⁻ and Λ_c⁺→pK⁻π⁺ decays.

Original language	English
Article number	75
Number of pages	22
Journal	Journal of High Energy Physics
Volume	2023
Issue number	7
DOIs	https://doi.org/10.1007/JHEP07(2023)075
Publication status	Published - 10 Jul 2023

Bibliographical note

Funding Information:
We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), Polish WLCG (Poland) and NERSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from ARC and ARDC (Australia); Minciencias (Colombia); AvH Foundation (Germany); EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and Région Auvergne-Rhône-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); GVA, XuntaGal, GENCAT and Prog. Atracción Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom).

Publisher Copyright:
© 2023, The Author(s).

Keywords

B Physics
Branching fraction
Flavour Physics
Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP07(2023)075Licence: Creative Commons: Attribution (CC BY)

AaijR2023FirstFinal published version, 3.31 MBLicence: Creative Commons: Attribution (CC BY)

Cite this

@article{a104c785f11d4fd1bf5962f79074d3fc,

title = "First observation and branching fraction measurement of the Λb0→Ds−p decay",

abstract = "The first observation of the Λb0→Ds−p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of √s = 13 TeV, corresponding to a total integrated luminosity of 6 fb −1. Using the Λb0→Λc+π− decay as the normalisation mode, the branching fraction of the Λb0→Ds−p decay is measured to be B(Λb0→Ds−p)=(12.6±0.5±0.3±1.2)×10−6 , where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Λb0→Λc+π− , Ds−→K−K+π− and Λc+→pK−π+ decays.",

keywords = "B Physics, Branching fraction, Flavour Physics, Hadron-Hadron Scattering",

author = "{LHCb Collaboration} and R. Aaij and Abdelmotteleb, {A. S.W.} and {Abellan Beteta}, C. and F. Abudin{\'e}n and T. Ackernley and B. Adeva and M. Adinolfi and P. Adlarson and H. Afsharnia and C. Agapopoulou and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and {Alvarez Cartelle}, P. and R. Amalric and S. Amato and Amey, {J. L.} and Y. Amhis and L. An and L. Anderlini and M. Andersson and A. Andreianov and M. Andreotti and D. Andreou and D. Ao and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and B. Audurier and {Bachiller Perea}, {I. B.} and N. Cooke and V. Duk and P. Ilten and J. Plews and D. Popov and N. Sahoo and A. Sergi and Slater, {M. W.} and Swallow, {P. N.} and Thompson, {D. J.D.} and Watson, {N. K.}",

note = "Funding Information: We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), Polish WLCG (Poland) and NERSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from ARC and ARDC (Australia); Minciencias (Colombia); AvH Foundation (Germany); EPLANET, Marie Sk{\l}odowska-Curie Actions and ERC (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and R{\'e}gion Auvergne-Rh{\^o}ne-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); GVA, XuntaGal, GENCAT and Prog. Atracci{\'o}n Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: {\textcopyright} 2023, The Author(s).",

year = "2023",

month = jul,

day = "10",

doi = "10.1007/JHEP07(2023)075",

language = "English",

volume = "2023",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "7",

}

TY - JOUR

T1 - First observation and branching fraction measurement of the Λb0→Ds−p decay

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Afsharnia, H.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Andreou, D.

AU - Ao, D.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachiller Perea, I. B.

AU - Cooke, N.

AU - Duk, V.

AU - Ilten, P.

AU - Plews, J.

AU - Popov, D.

AU - Sahoo, N.

AU - Sergi, A.

AU - Slater, M. W.

AU - Swallow, P. N.

AU - Thompson, D. J.D.

AU - Watson, N. K.

N1 - Funding Information: We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MICINN (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); DOE NP and NSF (USA). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), Polish WLCG (Poland) and NERSC (USA). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from ARC and ARDC (Australia); Minciencias (Colombia); AvH Foundation (Germany); EPLANET, Marie Skłodowska-Curie Actions and ERC (European Union); A*MIDEX, ANR, IPhU and Labex P2IO, and Région Auvergne-Rhône-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, CAS CCEPP, Fundamental Research Funds for the Central Universities, and Sci. & Tech. Program of Guangzhou (China); GVA, XuntaGal, GENCAT and Prog. Atracción Talento, CM (Spain); SRC (Sweden); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: © 2023, The Author(s).

PY - 2023/7/10

Y1 - 2023/7/10

N2 - The first observation of the Λb0→Ds−p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of √s = 13 TeV, corresponding to a total integrated luminosity of 6 fb −1. Using the Λb0→Λc+π− decay as the normalisation mode, the branching fraction of the Λb0→Ds−p decay is measured to be B(Λb0→Ds−p)=(12.6±0.5±0.3±1.2)×10−6 , where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Λb0→Λc+π− , Ds−→K−K+π− and Λc+→pK−π+ decays.

AB - The first observation of the Λb0→Ds−p decay is presented using proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of √s = 13 TeV, corresponding to a total integrated luminosity of 6 fb −1. Using the Λb0→Λc+π− decay as the normalisation mode, the branching fraction of the Λb0→Ds−p decay is measured to be B(Λb0→Ds−p)=(12.6±0.5±0.3±1.2)×10−6 , where the first uncertainty is statistical, the second systematic and the third due to uncertainties in the branching fractions of the Λb0→Λc+π− , Ds−→K−K+π− and Λc+→pK−π+ decays.

KW - B Physics

KW - Branching fraction

KW - Flavour Physics

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=85165296447&partnerID=8YFLogxK

U2 - 10.1007/JHEP07(2023)075

DO - 10.1007/JHEP07(2023)075

M3 - Article

AN - SCOPUS:85165296447

SN - 1126-6708

VL - 2023

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 7

M1 - 75

ER -