Observation of the Radiative Decays of ψ (1S) to χc1

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Observation of the Radiative Decays of ψ (1S) to χc1. / The BELLE collaboration ; Жилич, Виктор Николаевич.

In: Physical Review Letters, Vol. 124, No. 12, 122001, 27.03.2020.

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

Harvard

The BELLE collaboration & Жилич, ВН 2020, 'Observation of the Radiative Decays of ψ (1S) to χc1', Physical Review Letters, vol. 124, no. 12, 122001. https://doi.org/10.1103/PhysRevLett.124.122001

APA

The BELLE collaboration, & Жилич, В. Н. (2020). Observation of the Radiative Decays of ψ (1S) to χc1. Physical Review Letters, 124(12), [122001]. https://doi.org/10.1103/PhysRevLett.124.122001

Vancouver

The BELLE collaboration, Жилич ВН. Observation of the Radiative Decays of ψ (1S) to χc1. Physical Review Letters. 2020 Mar 27;124(12):122001. doi: 10.1103/PhysRevLett.124.122001

Author

The BELLE collaboration ; Жилич, Виктор Николаевич. / Observation of the Radiative Decays of ψ (1S) to χc1. In: Physical Review Letters. 2020 ; Vol. 124, No. 12.

BibTeX

@article{7f2204afbbca4402aa4cd298f56b9d12,

title = "Observation of the Radiative Decays of ψ (1S) to χc1",

abstract = "We report the first observation of the radiative decay of the ψ(1S) into a charmonium state. The significance of the observed signal of ψ(1S)→γχc1 is 6.3 standard deviations including systematics. The branching fraction is calculated to be B[ψ(1S)→γχc1]=[4.7-1.8+2.4(stat)-0.5+0.4(sys)×10-5]. We also searched for ψ(1S) radiative decays into χc0,2 and ηc(1S,2S), and set upper limits on their branching fractions. These results are obtained from a 24.9 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at a center-of-mass energy equal to the ψ(2S) mass using ψ(1S) tagging by the ψ(2S)→ψ(1S)π+π- transitions.",

author = "{The BELLE collaboration} and P. Katrenko and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and T. Aushev and I. Badhrees and S. Bahinipati and P. Behera and C. Bele{\~n}o and J. Bennett and V. Bhardwaj and B. Bhuyan and J. Biswal and A. Bobrov and G. Bonvicini and M. Bra{\v c}ko and M. Campajola and L. Cao and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and Cho, {H. E.} and K. Cho and Choi, {S. K.} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and {Di Capua}, F. and {Di Carlo}, S. and Z. Dole{\v z}al and Dong, {T. V.} and S. Eidelman and D. Epifanov and Fast, {J. E.} and Fulsom, {B. G.} and R. Garg and V. Gaur and N. Gabyshev and A. Garmash and A. Giri and P. Goldenzweig and B. Golob and O. Grzymkowska and O. Hartbrich and D. Matvienko and Y. Usov and Жилич, {Виктор Николаевич}",

year = "2020",

month = mar,

day = "27",

doi = "10.1103/PhysRevLett.124.122001",

language = "English",

volume = "124",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "12",

}

RIS

TY - JOUR

T1 - Observation of the Radiative Decays of ψ (1S) to χc1

AU - The BELLE collaboration

AU - Katrenko, P.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Aushev, T.

AU - Badhrees, I.

AU - Bahinipati, S.

AU - Behera, P.

AU - Beleño, C.

AU - Bennett, J.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bračko, M.

AU - Campajola, M.

AU - Cao, L.

AU - Červenkov, D.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, H. E.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Di Capua, F.

AU - Di Carlo, S.

AU - Doležal, Z.

AU - Dong, T. V.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Grzymkowska, O.

AU - Hartbrich, O.

AU - Matvienko, D.

AU - Usov, Y.

AU - Жилич, Виктор Николаевич

PY - 2020/3/27

Y1 - 2020/3/27

N2 - We report the first observation of the radiative decay of the ψ(1S) into a charmonium state. The significance of the observed signal of ψ(1S)→γχc1 is 6.3 standard deviations including systematics. The branching fraction is calculated to be B[ψ(1S)→γχc1]=[4.7-1.8+2.4(stat)-0.5+0.4(sys)×10-5]. We also searched for ψ(1S) radiative decays into χc0,2 and ηc(1S,2S), and set upper limits on their branching fractions. These results are obtained from a 24.9 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at a center-of-mass energy equal to the ψ(2S) mass using ψ(1S) tagging by the ψ(2S)→ψ(1S)π+π- transitions.

AB - We report the first observation of the radiative decay of the ψ(1S) into a charmonium state. The significance of the observed signal of ψ(1S)→γχc1 is 6.3 standard deviations including systematics. The branching fraction is calculated to be B[ψ(1S)→γχc1]=[4.7-1.8+2.4(stat)-0.5+0.4(sys)×10-5]. We also searched for ψ(1S) radiative decays into χc0,2 and ηc(1S,2S), and set upper limits on their branching fractions. These results are obtained from a 24.9 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at a center-of-mass energy equal to the ψ(2S) mass using ψ(1S) tagging by the ψ(2S)→ψ(1S)π+π- transitions.

UR - http://www.scopus.com/inward/record.url?scp=85083545972&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.124.122001

DO - 10.1103/PhysRevLett.124.122001

M3 - Article

C2 - 32281835

AN - SCOPUS:85083545972

VL - 124

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 12

M1 - 122001

ER -

ID: 24227538