用KEDR探测器在1.85和3.1 GeV之间寻找e+ e-湮没中的窄共振
Search for narrow resonances in e+ e- annihilation between 1.85 and 3.1 GeV with the KEDR Detector
摘要:
我们报告的搜索结果的窄共振e+ e-湮没在质心能量在1.85和3.1 GeV之间进行的KEDR探测器在VEPP-4 M e+ e-对撞机。在90%C. L.条件下,得到了γ(R -> ee)Br(R -> hadr)的轻子宽度小于120 eV的上限.
英文摘要:
We report results of a search for narrow resonances in e+ e- annihilation at center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR detector at the VEPP-4M e+ e- collider. The upper limit on the leptonic width of a narrow resonance Gamma(R -> ee) Br(R -> hadr) < 120 eV has been obtained (at 90 % C.L.).
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