Observation of ψ(3770)→ππJ/ψ and measurement of Γee[ψ(2S)]

被引：63

作者：

Adam, NE ^{[1
]}

Alexander, JP

Berkelman, K

Cassel, DG

Crede, V

Duboscq, JE

Ecklund, KM

Ehrlich, R

Fields, L

Galik, RS

Gibbons, L

Gittelman, B

Gray, R

Gray, SW

Hartill, DL

Heltsley, BK

Hertz, D

Jones, CD

Kandaswamy, J

Kreinick, DL

Kuznetsov, VE

Mahlke-Krüger, H

Meyer, TO

Onyisi, PUE

Patterson, JR

Peterson, D

Phillips, EA

Pivarski, J

Riley, D

Ryd, A

Sadoff, AJ

Schwarthoff, H

Shi, X

Shepherd, MR

Stroiney, S

Sun, WM

Urner, D

Wilksen, T

Weaver, KM

Weinberger, M

Athar, SB

Avery, P

Breva-Newell, L

Patel, R

Potlia, V

Stoeck, H

Yelton, J

Rubin, P

Cawlfield, C

Eisenstein, BI

机构：

[1] Cornell Univ, Ithaca, NY 14853 USA

[2] Univ Florida, Gainesville, FL 32611 USA

[3] George Mason Univ, Fairfax, VA 22030 USA

[4] Univ Illinois, Urbana, IL 61801 USA

[5] Carleton Univ, Ottawa, ON K1S 5B6, Canada

[6] Univ Kansas, Lawrence, KS 66045 USA

[7] Luther Coll, Decorah, IA 52101 USA

[8] Univ Minnesota, Minneapolis, MN 55455 USA

[9] Northwestern Univ, Evanston, IL 60208 USA

[10] SUNY Albany, Albany, NY 12222 USA

[11] Univ Oklahoma, Norman, OK 73019 USA

[12] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[13] Univ Puerto Rico, Mayaguez, PR 00681 USA

[14] Purdue Univ, W Lafayette, IN 47907 USA

[15] Rensselaer Polytech Inst, Troy, NY 12180 USA

[16] Univ Rochester, Rochester, NY 14627 USA

[17] So Methodist Univ, Dallas, TX 75275 USA

[18] Syracuse Univ, Syracuse, NY 13244 USA

[19] Vanderbilt Univ, Nashville, TN 37235 USA

[20] Wayne State Univ, Detroit, MI 48202 USA

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

[22] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.96.082004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe signals for the decays psi(3770)-> XJ/psi from data acquired with the CLEO detector operating at the CESR e(+)e(-) collider with root s=3773 MeV. We measure the following branching fractions B(psi(3770)-> XJ/psi) and significances: (189 +/- 20 +/- 20)x10(-5) (11.6 sigma) for X=pi(+)pi(-), (80 +/- 25 +/- 16)x10(-5) (3.4 sigma) for X=pi(0)pi(0), and (87 +/- 33 +/- 22)x10(-5) (3.5 sigma) for X=eta, where the errors are statistical and systematic, respectively. The radiative return process e(+)e(-)->gamma psi(2S) populates the same event sample and is used to measure Gamma(ee)[psi(2S)]=(2.54 +/- 0.03 +/- 0.11) keV.

引用

页数：6

共 32 条

[1] ABLIKIM M, 2005, UNPUB 22 INT S LEPT
[2] Branching fractions for ψ(2S)-to-J/ψ transitions -: art. no. 232002
Adam, NE
Alexander, JP
Berkelman, K
Cassel, DG
Crede, V
Duboscq, JE
Ecklund, KM
Ehrlich, R
Fields, L
Galik, RS
Gibbons, L
Gittelman, B
Gray, R
Gray, SW
Hartill, DL
Heltsley, BK
Hertz, D
Hsu, L
Jones, CD
Kandaswamy, J
Kreinick, DL
Kuznetsov, VE
Mahlke-Krüger, H
Meyer, TO
Onyisi, PUE
Patterson, JR
Peterson, D
Phillips, EA
Pivarski, J
Riley, D
Ryd, A
Sadoff, AJ
Schwarthoff, H
Shepherd, MR
Stroiney, S
Sun, WM
Urner, D
Wilksen, T
Weinberger, M
Athar, SB
Avery, P
Breva-Newell, L
Patel, R
Potlia, V
Stoeck, H
Yelton, J
Rubin, P
Cawlfield, C
Eisenstein, BI
Gollin, GD
[J]. PHYSICAL REVIEW LETTERS, 2005, 94 (23)
[3] HEAVY FLAVOR RESONANCES AND QED RADIATIVE-CORRECTIONS
ALEXANDER, JP
BONVICINI, G
DRELL, PS
FREY, R
LUTH, V
[J]. NUCLEAR PHYSICS B, 1989, 320 (01) : 45 - 60
[4] Construction, pattern recognition and performance of the CLEO IIILiF-TEA RICH detector
Artuso, M
Ayad, R
Bukin, K
Efimov, A
Boulahouache, C
Dambasuren, E
Kopp, S
Mountain, R
Majumder, G
Schuh, S
Skwarnicki, T
Stone, S
Viehhauser, G
Wang, JC
Coan, T
Fadeyev, V
Volobouev, I
Ye, J
Anderson, S
Kubota, Y
Smith, A
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 502 (01) : 91 - 100
[5] Evidence of ψ(3770) non-D(D)over-bar decay to J/ψπ+π-
Bai, JZ
Ban, Y
Bian, JG
Cai, X
Chang, JF
Chen, HF
Chen, HS
Chen, J
Chen, JC
Chen, YB
Chi, SP
Chu, YP
Cui, XZ
Dai, YM
Dai, YS
Dong, LY
Du, SX
Du, ZZ
Fang, J
Fang, SS
Fu, CD
Fu, HY
Fu, LR
Gao, CS
Gao, ML
Gao, YN
Gong, MY
Gong, WX
Gu, SD
Guo, YN
Guo, YQ
Guo, ZJ
Han, SW
Harris, FA
He, J
He, KL
He, M
He, X
Heng, YK
Hong, T
Hu, HM
Hu, T
Huang, GS
Huang, L
Huang, XP
Ji, XB
Jiang, CH
Jiang, XS
Jin, DP
Jin, S
[J]. PHYSICS LETTERS B, 2005, 605 (1-2) : 63 - 71
[6] PHOTOS - A UNIVERSAL MONTE-CARLO FOR QED RADIATIVE-CORRECTIONS - VERSION 2.0
BARBERIO, E
WAS, Z
[J]. COMPUTER PHYSICS COMMUNICATIONS, 1994, 79 (02) : 291 - 308
[7] Charmonium options for the X(3872) -: art. no. 054008
Barnes, T
Godfrey, S
[J]. PHYSICAL REVIEW D, 2004, 69 (05):
[8] Spectroscopy at B-factories using hard photon emission
Benayoun, M
Eidelman, SI
Ivanchenko, VN
Silagadze, ZK
[J]. MODERN PHYSICS LETTERS A, 1999, 14 (37) : 2605 - 2614
[9] HARD-PHOTON EMISSION IN E+E-REACTIONS
BONNEAU, G
MARTIN, F
[J]. NUCLEAR PHYSICS B, 1971, B 27 (02) : 381 - &
[10] Brambilla N., hep-ph/0412158

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