Charmonium decays of Y(4260), ψ(4160), and ψ(4040)

被引：186

作者：

Coan, TE

Gao, YS

Liu, F

Artuso, M

Blusk, S

Butt, J

Li, J

Menaa, N

Mountain, R

Nisar, S

Randrianarivony, K

Redjimi, R

Sia, R

Skwarnicki, T

Stone, S

Wang, JC

Zhang, K

Csorna, SE

Bonvicini, G

Cinabro, D

Dubrovin, M

Lincoln, A

Asner, DM

Edwards, KW

Briere, RA

Brock, I

Chen, J

Ferguson, T

Tatishvili, G

Vogel, H

Watkins, ME

Rosner, JL

Adam, NE

Alexander, JP

Berkelman, K

Cassel, DG

Duboscq, JE

Ecklund, KM

Ehrlich, R

Fields, L

Galik, RS

Gibbons, L

Gray, R

Gray, SW

Hartill, DL

Heltsley, BK

Hertz, D

Jones, CD

Kandaswamy, J

Kreinick, DL

机构：

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

[2] Syracuse Univ, Syracuse, NY 13244 USA

[3] Vanderbilt Univ, Nashville, TN 37235 USA

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

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

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

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

[8] Cornell Univ, Ithaca, NY 14853 USA

[9] Univ Florida, Gainesville, FL 32611 USA

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

[11] Univ Illinois, Urbana, IL 61801 USA

[12] Indiana Univ, Bloomington, IN 47405 USA

[13] Univ Kansas, Lawrence, KS 66045 USA

[14] Luther Coll, Decorah, IA 52101 USA

[15] Univ Minnesota, Minneapolis, MN 55455 USA

[16] Northwestern Univ, Evanston, IL 60208 USA

[17] SUNY Albany, Albany, NY 12222 USA

[18] Univ Oklahoma, Norman, OK 73019 USA

[19] Univ Pittsburgh, Pittsburgh, PA 15260 USA

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

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

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

[23] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.96.162003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using data collected with the CLEO detector operating at the CESR e(+)e(-) collider at root s = 3.97-4.26 GeV, we investigate 15 charmonium decay modes of the psi(4040), psi(4160), and Y(4260) resonances. We confirm, at 11 sigma significance, the BABAR Y(4260)->pi(+)pi(-)J/psi discovery, make the first observation of Y(4260)->pi(0)pi(0)J/psi (5.1 sigma), and find the first evidence for Y(4260)-> K(+)K(-)J/psi (3.7 sigma). We measure e(+)e(-) cross sections at root s=4.26 GeV as sigma(pi(+)pi(-)J/psi)=58(-10)(+12)+/- 4 pb, sigma(pi(0)pi(0)J/psi)=23(-8)(+12)+/- 1 pb, and sigma(K(+)K(-)J/psi)=9(-5)(+9)+/- 1 pb, in which the uncertainties are statistical and systematic, respectively. Upper limits are placed on other decay rates from all three resonances.

引用

页数：6

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