Improved measurement of the branching fractions for J/ψ → γπ0, γη, and γη′

被引：0

作者：

Ablikim, M. ^{[1
]}

Achasov, M. N. ^{[5
]}

Adlarson, P. ^{[83
]}

Ai, X. C. ^{[89
]}

Aliberti, R. ^{[38
]}

Amoroso, A. ^{[46
,78
,79
,82
]}

An, M. R. ^{[42
]}

An, Q. ^{[60
,61
,75
]}

Bai, Y.

Bakina, O. ^{[39
]}

Balossino, I. ^{[31
]}

Ban, Y. ^{[49
]}

Batozskaya, V. ^{[1
,47
]}

Begzsuren, K. ^{[35
]}

Berger, N. ^{[38
]}

Berlowski, M. ^{[47
]}

Bertani, M. ^{[28
]}

Bettoni, D. ^{[31
]}

Bianchi, F. ^{[78
,79
,82
]}

Bianco, E. ^{[78
,79
,82
]}

Bortone, A. ^{[78
,79
,82
]}

Boyko, I. ^{[39
]}

Briere, R. A. ^{[6
]}

Brueggemann, A. ^{[72
]}

Cai, H. ^{[84
]}

Cai, X. ^{[1
,60
,61
]}

Calcaterra, A. ^{[28
]}

Cao, G. F. ^{[1
,67
]}

Cao, N. ^{[1
,67
]}

Cetin, S. A. ^{[65
]}

Chang, J. F. ^{[1
,60
,61
]}

Chang, T. T. ^{[85
]}

Chang, W. L. ^{[1
,67
]}

Che, G. R. ^{[46
]}

Chelkov, G. ^{[39
]}

Chen, C. ^{[46
]}

Chen, Chao

Chen, G. ^{[1
]}

Chen, H. S. ^{[1
,67
]}

Chen, M. L. ^{[1
,60
,61
,67
]}

Chen, S. J. ^{[45
]}

Chen, S. M. ^{[64
]}

Chen, T. ^{[1
,67
]}

Chen, X. R. ^{[34
,67
]}

Chen, X. T. ^{[1
,67
]}

Chen, Y. B. ^{[1
,60
,61
]}

Chen, Y. Q. ^{[37
]}

Chen, Z. J. ^{[25
]}

Cheng, W. S. ^{[78
,82
]}

Choi, S. K. ^{[11
]}

机构：

[1] Inst High Energy Phys, Beijing 100049, Peoples R China

[2] Beihang Univ, Beijing 100191, Peoples R China

[3] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China

[4] Bochum Ruhr Univ, D-44780 Bochum, Germany

[5] Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia

[6] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[7] Cent China Normal Univ, Wuhan 430079, Peoples R China

[8] Cent South Univ, Changsha 410083, Peoples R China

[9] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China

[10] China Univ Geosci, Wuhan 430074, Peoples R China

[11] Chung Ang Univ, Seoul 06974, South Korea

[12] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan

[13] Fudan Univ, Shanghai 200433, Peoples R China

[14] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany

[15] Guangxi Normal Univ, Guilin 541004, Peoples R China

[16] Hangzhou Normal Univ, Hangzhou 310036, Peoples R China

[17] Hebei Univ, Baoding 071002, Peoples R China

[18] Helmholtz Inst Mainz, Staudinger Weg 18, D-55099 Mainz, Germany

[19] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China

[20] Henan Univ, Kaifeng 475004, Peoples R China

[21] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China

[22] Henan Univ Technol, Zhengzhou 450001, Peoples R China

[23] Huangshan Coll, Huangshan 245000, Peoples R China

[24] Hunan Normal Univ, Changsha 410081, Peoples R China

[25] Hunan Univ, Changsha 410082, Peoples R China

[26] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India

[27] Indiana Univ, Bloomington, IN 47405 USA

[28] INFN Lab Nazl Frascati, I-00044 Frascati, Italy

[29] INFN Lab Nazl Frascati, INFN Sez Perugia, I-06100 Perugia, Italy

[30] Univ Perugia, INFN Lab Nazl Frascati, I-06100 Perugia, Italy

[31] INFN Sez Ferrara, I-44122 Ferrara, Italy

[32] Univ Ferrara, INFN Sez Ferrara, I-44122 Ferrara, Italy

[33] Inner Mongolia Univ, Hohhot 010021, Peoples R China

[34] Inst Modern Phys, Lanzhou 730000, Peoples R China

[35] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia

[36] Univ Tarapaca, Inst Alta Invest, Casilla 7D, Arica 1000000, Chile

[37] Jilin Univ, Changchun 130012, Peoples R China

[38] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany

[39] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[40] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany

[41] Lanzhou Univ, Lanzhou 730000, Peoples R China

[42] Liaoning Normal Univ, Dalian 116029, Peoples R China

[43] Liaoning Univ, Shenyang 110036, Peoples R China

[44] Nanjing Normal Univ, Nanjing 210023, Peoples R China

[45] Nanjing Univ, Nanjing 210093, Peoples R China

[46] Nankai Univ, Tianjin 300071, Peoples R China

[47] Natl Ctr Nucl Res, PL-02093 Warsaw, Poland

[48] North China Elect Power Univ, Beijing 102206, Peoples R China

[49] Peking Univ, Beijing 100871, Peoples R China

[50] Qufu Normal Univ, Qufu 273165, Shandong, Peoples R China

来源：

PHYSICAL REVIEW D | 2023年 / 108卷 / 09期

基金：

中国博士后科学基金; 瑞典研究理事会; 中国国家自然科学基金; 新加坡国家研究基金会; 国家重点研发计划;

关键词：

RADIATIVE DECAYS; TOF;

D O I：

10.1103/PhysRevD.108.092002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using a data sample of (1.0087 +/- 0.0044) x 10(10) J/psi events collected with the BESIII detector, the decays of J/psi -> gamma pi(0) (eta, eta ') -> gamma gamma gamma are studied. Newly measured branching fractions are B(J/psi -> gamma pi(0)) = (3.34 +/- 0.02 +/- 0.09) x 10(-5), B(J/psi -> gamma eta) = (1.096 +/- 0.001 +/- 0.019) x 10(-3), and B(J/psi -> gamma eta ') = (5.40 +/- 0.01 +/- 0.11) x 10(-3), where the first uncertainties are statistical and the second are systematic. These results are consistent with the world average values within two standard deviations. The ratio of partial widths Gamma(J/psi -> gamma eta ')/Gamma(J/psi -> gamma eta) is measured to be 4.93 +/- 0.13. The singlet-octet pseudoscalar mixing angle theta(P) is determined to be theta(P) = -(22.11 +/- 0.26)degrees or -(19.34 +/- 0.34)degrees with two different phenomenological models.

引用

页数：11

共 50 条

[1] Measurement of the branching fractions for J/ψ→γπ0, γη and γη'
Ablikim, M
Bai, JZ
Ban, Y
Bian, JG
Cai, X
Chen, HF
Chen, HS
Chen, HX
Chen, JC
Chen, J
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, YS
Diao, LY
Deng, ZY
Dong, QF
Du, SX
Fang, J
Fang, SS
Fu, CD
Gao, CS
Gao, YN
Gu, SD
Gu, YT
Guo, YN
Guo, YQ
Guo, ZJ
Harris, FA
He, KL
He, M
Heng, YK
Hu, HM
Hu, T
Huang, GS
Huang, XT
Ji, XB
Jiang, XS
Jiang, XY
Jiao, JB
Jin, DP
Jin, S
Jin, Y
Lai, YF
Li, G
Li, HB
Li, HH
Li, J
Li, RY
[J]. PHYSICAL REVIEW D, 2006, 73 (05):
[2] Precision measurement of the branching fractions of J/ψ → π+π-π0 and ψ′ → π+π-π0
Ablikim, M.
Achasov, M. N.
Albertoa, D.
Ambrose, D. J.
An, F. F.
An, Q.
An, Z. H.
Bai, J. Z.
Ferroli, R. B. F. Baldini
Ban, Y.
Becker, J.
Berger, N.
Bertani, M. B.
Bian, J. M.
Boger, E.
Bondarenko, O.
Boyko, I.
Briere, R. A.
Bytev, V.
Cai, X.
Calcaterra, A. C.
Cao, G. F.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, Y.
Chen, Y. B.
Cheng, H. P.
Chu, Y. P.
Cronin-Hennessy, D.
Dai, H. L.
Dai, J. P.
Dedovich, D.
Deng, Z. Y.
Denysenko, I.
Destefanis, M.
Ding, W. M.
Ding, Y.
Dong, L. Y.
Dong, M. Y.
Du, S. X.
Fang, J.
Fang, S. S.
Feng, C. Q.
Fu, C. D.
Fu, J. L.
[J]. PHYSICS LETTERS B, 2012, 710 (4-5) : 594 - 599
[3] Measurement of the branching fractions for J/→γπ0, and γη′ and study of η′→γπ+π- decay dynamics
Chen, Hai-Xuan
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 2007, 22 (2-3): : 637 - 640
[4] Measurement of branching fractions for ψ(3686) → γη′, γη, and γπ0
Ablikim, M.
Achasov, M. N.
Ahmed, S.
Albrecht, M.
Alekseev, M.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Ban, Y.
Bennett, D. W.
Bennett, J. V.
Berer, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
Boger, E.
Boyko, I.
Briere, R. A.
Cai, H.
Cai, X.
Cakir, O.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chai, J.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
Chu, X. K.
Cibinetto, G.
Cossio, F.
Dai, H. L.
Dai, J. P.
Dbeyssi, A.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
Destefanis, M.
De Mori, F.
[J]. PHYSICAL REVIEW D, 2017, 96 (05)
[5] Precision measurements of branching fractions for ψ′ → π0J/ψ and ηJ/Ψ
Ablikim, M.
Achasov, M. N.
Albayrak, O.
Ambrose, D. J.
An, F. F.
An, Q.
Bai, J. Z.
Ban, Y.
Becker, J.
Bennett, J. V.
Bertani, M.
Bian, J. M.
Boger, E.
Bondarenko, O.
Boyko, I.
Briere, R. A.
Bytev, V.
Cai, X.
Cakir, O.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X.
Chen, Y. B.
Cheng, H. P.
Chu, Y. P.
Coccetti, F.
Cronin-Hennessy, D.
Dai, H. L.
Dai, J. P.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
Destefanis, M.
Ding, W. M.
Ding, Y.
Dong, L. Y.
Dong, M. Y.
Du, S. X.
Fang, J.
Fang, S. S.
Fava, L.
[J]. PHYSICAL REVIEW D, 2012, 86 (09)
[6] Evidence for the decay B0 → J/ψω and measurement of the relative branching fractions of Bs0 meson decays to J/ψη and J/ψη′
Aaij, R.
Abellan Beteta, C.
Adametz, A.
Adeva, B.
Adinolfi, M.
Adrover, C.
Affolder, A.
Ajaltouni, Z.
Albrecht, J.
Alessio, F.
Alexander, M.
Ali, S.
Alkhazov, G.
Cartelle, P. Alvarez
Alves, A. A., Jr.
Amato, S.
Amhis, Y.
Anderlini, L.
Anderson, J.
Appleby, R. B.
Gutierrez, O. Aquines
Archilli, F.
Artamonov, A.
Artuso, M.
Aslanides, E.
Auriemma, G.
Bachmann, S.
Back, J. J.
Baesso, C.
Balagura, V.
Baldini, W.
Barlow, R. J.
Barschel, C.
Barsuk, S.
Barter, W.
Bates, A.
Bauer, Th
Bay, A.
Beddow, J.
Bediaga, I.
Belogurov, S.
Belous, K.
Belyaev, I.
Ben-Haim, E.
Benayoun, M.
Bencivenni, G.
Benson, S.
Benton, J.
Berezhnoy, A.
Bernet, R.
[J]. NUCLEAR PHYSICS B, 2013, 867 (03) : 547 - 566
[7] Measurement of the ω,ρ→π0e+e- branching fractions
Achasov, M. N.
Beloborodov, K. I.
Berdyugin, A. V.
Bogdanchikov, A. G.
Bukin, A. D.
Bukin, D. A.
Vasil'ev, A. V.
Golubev, V. B.
Dimova, T. V.
Druzhinin, V. P.
Koop, I. A.
Korol, A. A.
Koshuba, S. V.
Pakhtusova, E. V.
Perevedentsev, E. A.
Serednyakov, S. I.
Silagadze, Z. K.
Skrinsky, A. N.
Shatunov, Yu. M.
[J]. JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2008, 107 (01) : 61 - 68
[8] Measurement of the ω, ρ → π0e+e− branching fractions
M. N. Achasov
K. I. Beloborodov
A. V. Berdyugin
A. G. Bogdanchikov
A. D. Bukin
D. A. Bukin
A. V. Vasil’ev
V. B. Golubev
T. V. Dimova
V. P. Druzhinin
I. A. Koop
A. A. Korol’
S. V. Koshuba
E. V. Pakhtusova
E. A. Perevedentsev
S. I. Serednyakov
Z. K. Silagadze
A. N. Skrinsky
Yu. M. Shatunov
[J]. Journal of Experimental and Theoretical Physics, 2008, 107 : 61 - 68
[9] Precision measurement of the D*0 decay branching fractions
Ablikim, M.
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.
Ferroli, R. Baldini
Ban, Y.
Bennett, D. W.
Bennett, J. V.
Bertani, M.
Bettoni, D.
Bian, J. M.
Bianchi, F.
Boger, E.
Bondarenko, O.
Boyko, I.
Briere, R. A.
Cai, H.
Cai, X.
Cakir, O.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chang, J. F.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, H. Y.
Chen, J. C.
Chen, M. L.
Chen, S. J.
Chen, X.
Chen, X. R.
Chen, Y. B.
Cheng, H. P.
Chu, X. K.
Cibinetto, G.
Cronin-Hennessy, D.
Dai, H. L.
Dai, J. P.
Dbeyssi, A.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
[J]. PHYSICAL REVIEW D, 2015, 91 (03)
[10] Measurement of the branching fractions for τ- → π- KS π0 ντ and τ- → K-KS π0 ντ
Ryu, S.
[J]. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2012, 225 : 179 - 183

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