Observation of e+e- →ωχbJ (1P) and Search for Xb →ω ϒ (1S) at s near 10.75 GeV

The Belle II Collaboration

doi:10.1103/PhysRevLett.130.091902

Observation of e+e- →ωχbJ (1P) and Search for Xb →ω ϒ (1S) at s near 10.75 GeV

The Belle II Collaboration

Department of Physics

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

18 Citations (Scopus)

Abstract

We study the processes e+e-→ωχbJ(1P) (J=0, 1, or 2) using samples at center-of-mass energies s=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb-1 of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχbJ(1P) signals at s=10.745 GeV. By combining Belle II data with Belle results at s=10.867 GeV, we find energy dependencies of the Born cross sections for e+e-→ωχb1,b2(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at s=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c2.

Original language	English
Article number	091902
Journal	Physical review letters
Volume	130
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.130.091902
Publication status	Published - 2023 Mar 3

Bibliographical note

Publisher Copyright:
© 2023 authors. Published by the American Physical Society.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.130.091902

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@article{b041730b37bd4cc6891366be82f3019c,

title = "Observation of e+e- →ωχbJ (1P) and Search for Xb →ω ϒ (1S) at s near 10.75 GeV",

abstract = "We study the processes e+e-→ωχbJ(1P) (J=0, 1, or 2) using samples at center-of-mass energies s=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb-1 of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχbJ(1P) signals at s=10.745 GeV. By combining Belle II data with Belle results at s=10.867 GeV, we find energy dependencies of the Born cross sections for e+e-→ωχb1,b2(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at s=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c2.",

author = "{The Belle II Collaboration} and I. Adachi and L. Aggarwal and H. Ahmed and H. Aihara and N. Akopov and A. Aloisio and {Anh Ky}, N. and Asner, {D. M.} and T. Aushev and V. Aushev and H. Bae and P. Bambade and Sw Banerjee and J. Baudot and M. Bauer and A. Beaubien and J. Becker and Behera, {P. K.} and Bennett, {J. V.} and E. Bernieri and Bernlochner, {F. U.} and V. Bertacchi and M. Bertemes and E. Bertholet and M. Bessner and S. Bettarini and B. Bhuyan and F. Bianchi and T. Bilka and D. Biswas and D. Bodrov and A. Bolz and J. Borah and A. Bozek and M. Bra{\v c}ko and P. Branchini and Browder, {T. E.} and A. Budano and S. Bussino and M. Campajola and L. Cao and G. Casarosa and Chang, {M. C.} and P. Cheema and V. Chekelian and Chen, {Y. Q.} and K. Chilikin and K. Chirapatpimol and Cho, {H. E.} and E. Won",

note = "Publisher Copyright: {\textcopyright} 2023 authors. Published by the American Physical Society.",

year = "2023",

month = mar,

day = "3",

doi = "10.1103/PhysRevLett.130.091902",

language = "English",

volume = "130",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Observation of e+e- →ωχbJ (1P) and Search for Xb →ω ϒ (1S) at s near 10.75 GeV

AU - The Belle II Collaboration

AU - Adachi, I.

AU - Aggarwal, L.

AU - Ahmed, H.

AU - Aihara, H.

AU - Akopov, N.

AU - Aloisio, A.

AU - Anh Ky, N.

AU - Asner, D. M.

AU - Aushev, T.

AU - Aushev, V.

AU - Bae, H.

AU - Bambade, P.

AU - Banerjee, Sw

AU - Baudot, J.

AU - Bauer, M.

AU - Beaubien, A.

AU - Becker, J.

AU - Behera, P. K.

AU - Bennett, J. V.

AU - Bernieri, E.

AU - Bernlochner, F. U.

AU - Bertacchi, V.

AU - Bertemes, M.

AU - Bertholet, E.

AU - Bessner, M.

AU - Bettarini, S.

AU - Bhuyan, B.

AU - Bianchi, F.

AU - Bilka, T.

AU - Biswas, D.

AU - Bodrov, D.

AU - Bolz, A.

AU - Borah, J.

AU - Bozek, A.

AU - Bračko, M.

AU - Branchini, P.

AU - Browder, T. E.

AU - Budano, A.

AU - Bussino, S.

AU - Campajola, M.

AU - Cao, L.

AU - Casarosa, G.

AU - Chang, M. C.

AU - Cheema, P.

AU - Chekelian, V.

AU - Chen, Y. Q.

AU - Chilikin, K.

AU - Chirapatpimol, K.

AU - Cho, H. E.

AU - Won, E.

PY - 2023/3/3

Y1 - 2023/3/3

N2 - We study the processes e+e-→ωχbJ(1P) (J=0, 1, or 2) using samples at center-of-mass energies s=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb-1 of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχbJ(1P) signals at s=10.745 GeV. By combining Belle II data with Belle results at s=10.867 GeV, we find energy dependencies of the Born cross sections for e+e-→ωχb1,b2(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at s=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c2.

AB - We study the processes e+e-→ωχbJ(1P) (J=0, 1, or 2) using samples at center-of-mass energies s=10.701, 10.745, and 10.805 GeV, corresponding to 1.6, 9.8, and 4.7 fb-1 of integrated luminosity, respectively. These data were collected with the Belle II detector during special operations of the SuperKEKB collider above the ϒ(4S) resonance. We report the first observation of ωχbJ(1P) signals at s=10.745 GeV. By combining Belle II data with Belle results at s=10.867 GeV, we find energy dependencies of the Born cross sections for e+e-→ωχb1,b2(1P) to be consistent with the shape of the ϒ(10753) state. These data indicate that the internal structures of the ϒ(10753) and ϒ(10860) states may differ. Including data at s=10.653 GeV, we also search for the bottomonium equivalent of the X(3872) state decaying into ωϒ(1S). No significant signal is observed for masses between 10.45 and 10.65 GeV/c2.

UR - http://www.scopus.com/inward/record.url?scp=85149661029&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.130.091902

DO - 10.1103/PhysRevLett.130.091902

M3 - Article

C2 - 36930912

AN - SCOPUS:85149661029

SN - 0031-9007

VL - 130

JO - Physical review letters

JF - Physical review letters

IS - 9

M1 - 091902

ER -

Observation of e+e- →ωχbJ (1P) and Search for Xb →ω ϒ (1S) at s near 10.75 GeV

Abstract

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ASJC Scopus subject areas

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