Hunting for glueballs in electron-positron annihilation

被引:57
作者
Brodsky, SJ [1 ]
Goldhaber, AS
Lee, J
机构
[1] Thomas Jefferson Natl Accelerator Facil, Theory Grp, Newport News, VA 23036 USA
[2] Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA
[3] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA
[4] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
[5] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA
关键词
D O I
10.1103/PhysRevLett.91.112001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We calculate the cross section for the exclusive production of J(PC)=0(++) glueballs G(0) in association with the J/psi in e(+)e(-) annihilation using the perturbative QCD factorization formalism. The required long-distance matrix element for the glueball is bounded by CUSB data from a search for resonances in radiative Y decay. The cross section for e(+)e(-)-->J/psi+G(0) at roots=10.6 GeV is similar to exclusive charmonium-pair production e(+)e(-)-->J/psi+h for h=eta(c) and chi(c0), and is larger by a factor of 2 than that for h=eta(c)(2S). As the subprocesses gamma(*)-->(c (c) over bar)(c (c) over bar) and gamma(*)-->(c (c) over bar)(gg) are of the same nominal order in perturbative QCD, it is possible that some portion of the anomalously large signal observed by Belle in e(+)e(-)-->J/psiX may actually be due to the production of charmonium-glueball J/psiG(J) pairs.
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