TY - JOUR
T1 - Search for CP violation in Ξb- →pK-K- decays
AU - The 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 - Baptista Leite, J.
AU - Barlow, R. J.
AU - Barsuk, S.
AU - Barter, W.
AU - Bartolini, M.
AU - Baryshnikov, F.
AU - Basels, J. M.
AU - Bondar, A.
AU - Eidelman, S.
AU - Krokovny, P.
AU - Kudryavtsev, V.
AU - Maltsev, T.
AU - Shekhtman, L.
AU - Vorobyev, V.
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
VL - 104
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 5
M1 - 052010
ER -