Search for CP violation in Ξb- →pK-K- decays

LHCb Collaboration

doi:10.1103/PhysRevD.104.052010

Search for CP violation in Ξb- →pK-K- decays

LHCb Collaboration

Physics and Astronomy

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Abstract

A search for CP violation in charmless three-body Ξb-→pK-K- decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb-1 at a center-of-mass energy s=7 TeV, 2 fb-1 at s=8 TeV and 2 fb-1 at s=13 TeV. A good description of the phase-space distribution is obtained with an amplitude model containing contributions from ς(1385), Λ(1405), Λ(1520), Λ(1670), ς(1775) and ς(1915) resonances. The model allows for CP -violation effects, which are found to be consistent with zero. The branching fractions of Ξb-→ς(1385)K-, Ξb-→Λ(1405)K-, Ξb-→Λ(1520)K-, Ξb-→Λ(1670)K-, Ξb-→ς(1775)K- and Ξb-→ς(1915)K- decays are also reported. In addition, an upper limit is placed on the product of ratios of ωb- and Ξb- fragmentation fractions and the ωb-→pK-K- and Ξb-→pK-K- branching fractions.

Original language	English
Article number	052010
Journal	Physical Review D
Volume	104
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.104.052010
Publication status	Published - 1 Sept 2021

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); MSHE (Russia); 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), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (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); 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); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom).

Publisher Copyright:
© 2021 CERN.

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Cite this

@article{4b02eb3a12544bc18399579b872494ba,

title = "Search for CP violation in Ξb- →pK-K- decays",

abstract = "A search for CP violation in charmless three-body Ξb-→pK-K- decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb-1 at a center-of-mass energy s=7 TeV, 2 fb-1 at s=8 TeV and 2 fb-1 at s=13 TeV. A good description of the phase-space distribution is obtained with an amplitude model containing contributions from ς(1385), Λ(1405), Λ(1520), Λ(1670), ς(1775) and ς(1915) resonances. The model allows for CP -violation effects, which are found to be consistent with zero. The branching fractions of Ξb-→ς(1385)K-, Ξb-→Λ(1405)K-, Ξb-→Λ(1520)K-, Ξb-→Λ(1670)K-, Ξb-→ς(1775)K- and Ξb-→ς(1915)K- decays are also reported. In addition, an upper limit is placed on the product of ratios of ωb- and Ξb- fragmentation fractions and the ωb-→pK-K- and Ξb-→pK-K- branching fractions.",

author = "{LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, {C. A.} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and Z. Aliouche and G. Alkhazov and {Alvarez Cartelle}, P. and S. Amato and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, {J. J.} and {Baladron Rodriguez}, P. and V. Balagura and W. Baldini and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Cooke and V. Duk and P. Griffith and P. Ilten and Parkinson, {C. J.} and J. Plews and D. Popov and A. Sergi and Slater, {M. W.} and Swallow, {P. N.} 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); MSHE (Russia); 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), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (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); 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); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: {\textcopyright} 2021 CERN.",

year = "2021",

month = sep,

day = "1",

doi = "10.1103/PhysRevD.104.052010",

language = "English",

volume = "104",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society (APS)",

number = "5",

}

TY - JOUR

T1 - Search for CP violation in Ξb- →pK-K- decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Cooke, N.

AU - Duk, V.

AU - Griffith, P.

AU - Ilten, P.

AU - Parkinson, C. J.

AU - Plews, J.

AU - Popov, D.

AU - Sergi, A.

AU - Slater, M. W.

AU - Swallow, P. N.

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); MSHE (Russia); 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), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (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); 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); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Leverhulme Trust, the Royal Society and UKRI (United Kingdom). Publisher Copyright: © 2021 CERN.

PY - 2021/9/1

Y1 - 2021/9/1

N2 - A search for CP violation in charmless three-body Ξb-→pK-K- decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb-1 at a center-of-mass energy s=7 TeV, 2 fb-1 at s=8 TeV and 2 fb-1 at s=13 TeV. A good description of the phase-space distribution is obtained with an amplitude model containing contributions from ς(1385), Λ(1405), Λ(1520), Λ(1670), ς(1775) and ς(1915) resonances. The model allows for CP -violation effects, which are found to be consistent with zero. The branching fractions of Ξb-→ς(1385)K-, Ξb-→Λ(1405)K-, Ξb-→Λ(1520)K-, Ξb-→Λ(1670)K-, Ξb-→ς(1775)K- and Ξb-→ς(1915)K- decays are also reported. In addition, an upper limit is placed on the product of ratios of ωb- and Ξb- fragmentation fractions and the ωb-→pK-K- and Ξb-→pK-K- branching fractions.

AB - A search for CP violation in charmless three-body Ξb-→pK-K- decays is performed using pp collision data recorded with the LHCb detector, corresponding to integrated luminosities of 1 fb-1 at a center-of-mass energy s=7 TeV, 2 fb-1 at s=8 TeV and 2 fb-1 at s=13 TeV. A good description of the phase-space distribution is obtained with an amplitude model containing contributions from ς(1385), Λ(1405), Λ(1520), Λ(1670), ς(1775) and ς(1915) resonances. The model allows for CP -violation effects, which are found to be consistent with zero. The branching fractions of Ξb-→ς(1385)K-, Ξb-→Λ(1405)K-, Ξb-→Λ(1520)K-, Ξb-→Λ(1670)K-, Ξb-→ς(1775)K- and Ξb-→ς(1915)K- decays are also reported. In addition, an upper limit is placed on the product of ratios of ωb- and Ξb- fragmentation fractions and the ωb-→pK-K- and Ξb-→pK-K- branching fractions.

UR - http://www.scopus.com/inward/record.url?scp=85116418985&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.104.052010

DO - 10.1103/PhysRevD.104.052010

M3 - Article

AN - SCOPUS:85116418985

SN - 2470-0010

VL - 104

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052010

ER -

Search for CP violation in Ξb- →pK-K- decays

Abstract

Bibliographical note

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