Search for the doubly heavy baryons Ωbc0and Ξbc0decaying to Λc+π- And Ξc+π- And c

LHCb Collaboration

doi:10.1088/1674-1137/ac0c70

Search for the doubly heavy baryons Ω_bc⁰and Ξ_bc⁰decaying to Λ_c⁺π- And Ξ_c⁺π- And c

LHCb Collaboration

Physics and Astronomy

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

1 Citation (Scopus)

8 Downloads (Pure)

Abstract

The first search for the doubly heavy Ωbc0 baryon and a search for the Ξbc0 baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.2 fb - 1. The baryons are reconstructed via their decays to Λc+ π- and Ξc+ π-. No significant excess is found for invariant masses between 6700 and 7300, in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/c2. Upper limits are set on the ratio of the Ωbc0 and Ξbc0 production cross-section times the branching fraction to Λc+ π- (Ξc+ π-) relative to that of the Λb0 (Ξb0) baryon, for different lifetime hypotheses, at 95% confidence level. The upper limits range from 0.5 × 10-4 to 2.5 × 10-4 for the Ωbc0 → Λc+ π- (Ξbc0 → Λc+ π-) decay, and from 1.4 × 10-3 to 6.9 × 10-3 for the Ωbc0 → Ξc+ π- (Ξbc0 → Λc+ π-) decay, depending on the considered mass and lifetime of the Ωbc0 (Ξbc0) baryon.

Original language	English
Article number	093002
Journal	Chinese Physics C
Volume	45
Issue number	9
DOIs	https://doi.org/10.1088/1674-1137/ac0c70
Publication status	Published - 9 Sept 2021

Bibliographical note

Funding Information:
Content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd Article funded by SCOAP3

Publisher Copyright:
© 2021Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

Keywords

B physics
heavy quark production
quarkonium
spectroscopy

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation
Astronomy and Astrophysics

Access to Document

10.1088/1674-1137/ac0c70Licence: Other (please specify with Rights Statement)

AaijR2021search
Creative Commons Attribution 3.0 licence.
Final published version, 986 KBLicence: Other (please specify with Rights Statement)

Cite this

@article{045f022a8a8444f9abf55ff25c2f3629,

title = "Search for the doubly heavy baryons Ωbc0and Ξbc0decaying to Λc+π- And Ξc+π- And c",

abstract = "The first search for the doubly heavy Ωbc0 baryon and a search for the Ξbc0 baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.2 fb - 1. The baryons are reconstructed via their decays to Λc+ π- and Ξc+ π-. No significant excess is found for invariant masses between 6700 and 7300, in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/c2. Upper limits are set on the ratio of the Ωbc0 and Ξbc0 production cross-section times the branching fraction to Λc+ π- (Ξc+ π-) relative to that of the Λb0 (Ξb0) baryon, for different lifetime hypotheses, at 95% confidence level. The upper limits range from 0.5 × 10-4 to 2.5 × 10-4 for the Ωbc0 → Λc+ π- (Ξbc0 → Λc+ π-) decay, and from 1.4 × 10-3 to 6.9 × 10-3 for the Ωbc0 → Ξc+ π- (Ξbc0 → Λc+ π-) decay, depending on the considered mass and lifetime of the Ωbc0 (Ξbc0) baryon. ",

keywords = "B physics, heavy quark production, quarkonium, spectroscopy",

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 S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Cooke and V. Duk and P. Griffith and P. Ilten and C. Nguyen-Mau 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: Content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd Article funded by SCOAP3 Publisher Copyright: {\textcopyright} 2021Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.",

year = "2021",

month = sep,

day = "9",

doi = "10.1088/1674-1137/ac0c70",

language = "English",

volume = "45",

journal = "Chinese Physics C",

issn = "1674-1137",

publisher = "IOP Publishing Ltd.",

number = "9",

}

TY - JOUR

T1 - Search for the doubly heavy baryons Ωbc0and Ξbc0decaying to Λc+π- And Ξc+π- And c

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 - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Cooke, N.

AU - Duk, V.

AU - Griffith, P.

AU - Ilten, P.

AU - Nguyen-Mau, C.

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: Content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd Article funded by SCOAP3 Publisher Copyright: © 2021Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

PY - 2021/9/9

Y1 - 2021/9/9

N2 - The first search for the doubly heavy Ωbc0 baryon and a search for the Ξbc0 baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.2 fb - 1. The baryons are reconstructed via their decays to Λc+ π- and Ξc+ π-. No significant excess is found for invariant masses between 6700 and 7300, in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/c2. Upper limits are set on the ratio of the Ωbc0 and Ξbc0 production cross-section times the branching fraction to Λc+ π- (Ξc+ π-) relative to that of the Λb0 (Ξb0) baryon, for different lifetime hypotheses, at 95% confidence level. The upper limits range from 0.5 × 10-4 to 2.5 × 10-4 for the Ωbc0 → Λc+ π- (Ξbc0 → Λc+ π-) decay, and from 1.4 × 10-3 to 6.9 × 10-3 for the Ωbc0 → Ξc+ π- (Ξbc0 → Λc+ π-) decay, depending on the considered mass and lifetime of the Ωbc0 (Ξbc0) baryon.

AB - The first search for the doubly heavy Ωbc0 baryon and a search for the Ξbc0 baryon are performed using pp collision data collected via the LHCb experiment from 2016 to 2018 at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.2 fb - 1. The baryons are reconstructed via their decays to Λc+ π- and Ξc+ π-. No significant excess is found for invariant masses between 6700 and 7300, in a rapidity range from 2.0 to 4.5 and a transverse momentum range from 2 to 20 MeV/c2. Upper limits are set on the ratio of the Ωbc0 and Ξbc0 production cross-section times the branching fraction to Λc+ π- (Ξc+ π-) relative to that of the Λb0 (Ξb0) baryon, for different lifetime hypotheses, at 95% confidence level. The upper limits range from 0.5 × 10-4 to 2.5 × 10-4 for the Ωbc0 → Λc+ π- (Ξbc0 → Λc+ π-) decay, and from 1.4 × 10-3 to 6.9 × 10-3 for the Ωbc0 → Ξc+ π- (Ξbc0 → Λc+ π-) decay, depending on the considered mass and lifetime of the Ωbc0 (Ξbc0) baryon.

KW - B physics

KW - heavy quark production

KW - quarkonium

KW - spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85116248158&partnerID=8YFLogxK

U2 - 10.1088/1674-1137/ac0c70

DO - 10.1088/1674-1137/ac0c70

M3 - Article

AN - SCOPUS:85116248158

SN - 1674-1137

VL - 45

JO - Chinese Physics C

JF - Chinese Physics C

IS - 9

M1 - 093002

ER -