Search for ηc(2S)→2(π+π−) and improved measurement of χcJ→2(π+π−)

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Search for ηc(2S)→2(π+π−) and improved measurement of χcJ→2(π+π−). / The BESIII Collaboration ; Николаев, Иван Борисович ; Мучной, Николай Юрьевич.

в: Physical Review D, Том 110, № 7, 072009, 15.10.2024.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{ad812c01fd0c417a8d9d9a119a550312,

title = "Search for ηc(2S)→2(π+π−) and improved measurement of χcJ→2(π+π−)",

abstract = "We search for the hadronic decay ηc(2S)→2(π+π-) in the ψ(3686)→γηc(2S) radiative decay using (27.12±0.14)×108 ψ(3686) events collected by the BESIII detector at the BEPCII collider. No significant signal is found, and the upper limit of B[ψ(3686)→γηc(2S)]B[ηc(2S)→2(π+π-)] is determined to be 1.43×10-6 at the 90% confidence level. Using ψ(3686)→γχcJ transitions, we also measure the branching fractions of B[χcJ(J=0,1,2)→2(π+π-)], which are B[χc0→2(π+π-)]=(2.127±0.002(stat)±0.101(syst))%, B[χc1→2(π+π-)]=(0.685±0.001(stat)±0.031(syst))%, and B[χc2→2(π+π-)]=(1.153±0.001(stat)±0.063(syst))%.",

author = "{BESIII Collaboration} and M. Ablikim and M. n. Achasov and P. Adlarson and O. Afedulidis and X. c. Ai and R. Aliberti and A. Amoroso and Q. An and Y. Bai and O. Bakina and I. Balossino and Y. Ban and H.-R. Bao and V. Batozskaya and K. Begzsuren and N. Berger and M. Berlowski and M. Bertani and D. Bettoni and F. Bianchi and E. Bianco and R. a. Briere and A. Brueggemann and Николаев, {Иван Борисович} and Мучной, {Николай Юрьевич}",

year = "2024",

month = oct,

day = "15",

doi = "10.1103/PhysRevD.110.072009",

language = "English",

volume = "110",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "7",

}

RIS

TY - JOUR

T1 - Search for ηc(2S)→2(π+π−) and improved measurement of χcJ→2(π+π−)

AU - BESIII Collaboration

AU - Ablikim, M.

AU - Achasov, M. n.

AU - Adlarson, P.

AU - Afedulidis, O.

AU - Ai, X. c.

AU - Aliberti, R.

AU - Amoroso, A.

AU - An, Q.

AU - Bai, Y.

AU - Bakina, O.

AU - Balossino, I.

AU - Ban, Y.

AU - Bao, H.-R.

AU - Batozskaya, V.

AU - Begzsuren, K.

AU - Berger, N.

AU - Berlowski, M.

AU - Bertani, M.

AU - Bettoni, D.

AU - Bianchi, F.

AU - Bianco, E.

AU - Briere, R. a.

AU - Brueggemann, A.

AU - Николаев, Иван Борисович

AU - Мучной, Николай Юрьевич

PY - 2024/10/15

Y1 - 2024/10/15

N2 - We search for the hadronic decay ηc(2S)→2(π+π-) in the ψ(3686)→γηc(2S) radiative decay using (27.12±0.14)×108 ψ(3686) events collected by the BESIII detector at the BEPCII collider. No significant signal is found, and the upper limit of B[ψ(3686)→γηc(2S)]B[ηc(2S)→2(π+π-)] is determined to be 1.43×10-6 at the 90% confidence level. Using ψ(3686)→γχcJ transitions, we also measure the branching fractions of B[χcJ(J=0,1,2)→2(π+π-)], which are B[χc0→2(π+π-)]=(2.127±0.002(stat)±0.101(syst))%, B[χc1→2(π+π-)]=(0.685±0.001(stat)±0.031(syst))%, and B[χc2→2(π+π-)]=(1.153±0.001(stat)±0.063(syst))%.

AB - We search for the hadronic decay ηc(2S)→2(π+π-) in the ψ(3686)→γηc(2S) radiative decay using (27.12±0.14)×108 ψ(3686) events collected by the BESIII detector at the BEPCII collider. No significant signal is found, and the upper limit of B[ψ(3686)→γηc(2S)]B[ηc(2S)→2(π+π-)] is determined to be 1.43×10-6 at the 90% confidence level. Using ψ(3686)→γχcJ transitions, we also measure the branching fractions of B[χcJ(J=0,1,2)→2(π+π-)], which are B[χc0→2(π+π-)]=(2.127±0.002(stat)±0.101(syst))%, B[χc1→2(π+π-)]=(0.685±0.001(stat)±0.031(syst))%, and B[χc2→2(π+π-)]=(1.153±0.001(stat)±0.063(syst))%.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85207123305&origin=inward&txGid=576a0686963c5b249cd192f31c97bc69

U2 - 10.1103/PhysRevD.110.072009

DO - 10.1103/PhysRevD.110.072009

M3 - Article

VL - 110

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 7

M1 - 072009

ER -

ID: 62703735