Isospin breaking of the narrow charmonium state of Belle at 3872 MeV as a deuson

被引：470

作者：

Törnqvist, NA ^{[1
]}

机构：

[1] Univ Helsinki, Dept Phys Sci, FIN-00014 Helsinki, Finland

来源：

PHYSICS LETTERS B | 2004年 / 590卷 / 3-4期

关键词：

D O I：

10.1016/j.physletb.2004.03.077

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The narrow charmonium state near 3872 MeV reported by the Belle Collaboration and confirmed by CDF lies almost exactly at the D-0(D) over bar*(0) threshold. As was predicted many years ago it can be a D (D) over bar* deuteronlike meson-meson state called a deuson. If so, its spin-parity should be 1(++), or possibly 0(-+), and its isospin predominantly 0. An important decay mode should be via D-0(D) over bar*(0) to D-0(D) over bar (0)pi(0). Large isospin breaking is expected because of the isospin mass splitting between the neutral and charged D (D*) mesons. Because of this large isospin breaking the decay X(3872)--> J/psip would be allowed, while J/psisigma a would be forbidden by C-parity, as indicated by the present data. (C) 2004 Published by Elsevier B.V.

引用

页码：209 / 215

页数：7

共 32 条

[1]

Abe K, 2002, PHYS REV LETT, V89, DOI 10.1103/PhysRevLett.89.151802

[2]

Abe K, 2002, PHYS REV LETT, V88, DOI [10.1103/PhysRevLett.88.181803, 10.1103/PhysRevLett.88.052001, 10.1103/PhysRevLett.88.052002]

[3]

ABE K, HEPEX0308029

[4]

ACOSTA D, 2003, UNPUB PHYS REV LETT

[5] First measurement of Γ(D*+) and precision measurement of mD*+-mD0 -: art. no. 032003 [J].

Anastassov, A ;

Eckhart, E ;

Gan, KK ;

Gwon, C ;

Hart, T ;

Honscheid, K ;

Hufnagel, D ;

Kagan, H ;

Kass, R ;

Pedlar, TK ;

Thayer, JB ;

von Toerne, E ;

Zoeller, MM ;

Richichi, SJ ;

Severini, H ;

Skubic, P ;

Undrus, A ;

Savinov, V ;

Chen, S ;

Hinson, JW ;

Lee, J ;

Miller, DH ;

Shibata, EI ;

Shipsey, IPJ ;

Pavlunin, V ;

Cronin-Hennessy, D ;

Lyon, AL ;

Park, W ;

Thorndike, EH ;

Coan, TE ;

Gao, YS ;

Maravin, Y ;

Narsky, I ;

Stroynowski, R ;

Ye, J ;

Wlodek, T ;

Artuso, M ;

Benslama, K ;

Boulahouache, C ;

Bukin, K ;

Dambasuren, E ;

Majumder, G ;

Mountain, R ;

Skwarnicki, T ;

Stone, S ;

Wang, JC ;

Wolf, A ;

Kopp, S ;

Kostin, M ;

Mahmood, AH .

PHYSICAL REVIEW D, 2002, 65 (03)

[6] Observation of a near-threshold enhancement in the p(p)over-bar mass spectrum from radiative J/ψ→γp(p)over-bar deecays -: art. no. 022001 [J].

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 ;

Dunwoodie, W ;

Fang, J ;

Fang, SS ;

Fu, CD ;

Fu, HY ;

Fu, LP ;

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 ;

Izen, JM ;

Ji, XB ;

Jiang, CH .

PHYSICAL REVIEW LETTERS, 2003, 91 (02) :1-022001

[7] EXOTIC MESONS AND E+E- ANNIHILATION [J].

BANDER, M ;

SHAW, GL ;

THOMAS, P ;

MESHKOV, S .

PHYSICAL REVIEW LETTERS, 1976, 36 (13) :695-697

[8] Charmonium options for the X(3872) -: art. no. 054008 [J].

Barnes, T ;

Godfrey, S .

PHYSICAL REVIEW D, 2004, 69 (05)

[9]

BICUDO P, HEPPH04011106

[10]

BRAATEN E, HEPPH0311147, P55215

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