Search for Zc+ (3900) in the 1+- channel on the lattice

被引：59

作者：

Prelovsek, Sasa ^{[1
,2
]}

Leskovec, Luka ^{[2
]}

机构：

[1] Univ Ljubljana, Dept Phys, Ljubljana 1000, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

来源：

PHYSICS LETTERS B | 2013年 / 727卷 / 1-3期

关键词：

Charmonium-like meson; Four-quark states; Scattering; Lattice QCD;

D O I：

10.1016/j.physletb.2013.10.009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently three experiments reported a discovery of manifestly exotic Z(c)(+)(3900) in the decay to J/psi pi(+), while J and P are experimentally unknown. We search for this state on the lattice by simulating the channel with J(PC) = 1(+-) and I = 1, and we do not find a candidate for Z(c)(+)(3900). Instead, we only find discrete scattering states D (D) over bar* and J/psi pi, which inevitably have to be present in a dynamical QCD. The possible reasons for not finding Z(c)(+) may be that its quantum numbers are not 1(+-) or that the employed interpolating fields are not diverse enough. Simulations with additional types of interpolators will be needed to reach a more definite conclusion. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：172 / 176

页数：5

共 31 条

[1] Observation of a Charged Charmoniumlike Structure in e+e- → π+π- J/ψ at √s=4.26 GeV [J].

Ablikim, M. ;

Achasov, M. N. ;

Ai, X. C. ;

Albayrak, O. ;

Ambrose, D. J. ;

An, F. F. ;

An, Q. ;

Bai, J. Z. ;

Ferroli, R. Baldini ;

Ban, Y. ;

Becker, J. ;

Bennett, J. V. ;

Bertani, M. ;

Bian, J. M. ;

Boger, E. ;

Bondarenko, O. ;

Boyko, I. ;

Briere, R. A. ;

Bytev, V. ;

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, J. C. ;

Chen, M. L. ;

Chen, S. J. ;

Chen, X. ;

Chen, Y. B. ;

Cheng, H. P. ;

Chu, Y. P. ;

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. .

PHYSICAL REVIEW LETTERS, 2013, 110 (25)

[2]

Blossier B., 2009, J HIGH ENERGY PHYS, V0904

[3]

Braaten E., ARXIV13056905

[4]

Chen D.-Y., ARXIV13045845

[5] Vector and axial-vector charmoniumlike states [J].

Chen, Wei ;

Zhu, Shi-Lin .

PHYSICAL REVIEW D, 2011, 83 (03)

[6]

Cui C.-Y., ARXIV13041850

[7]

Dias J., ARXIV13046433

[8] Strong decays of molecular states Zc+ and Zc′+ [J].

Dong, Yubing ;

Faessler, Amand ;

Gutsche, Thomas ;

Lyubovitskij, Valery E. .

PHYSICAL REVIEW D, 2013, 88 (01)

[9] Massive fermions in lattice gauge theory [J].

ElKhadra, AX ;

Kronfeld, AS ;

Mackenzie, PB .

PHYSICAL REVIEW D, 1997, 55 (07) :3933-3957

[10]

Guo F.-K., ARXIV13036608

← 1 2 3 4 →