Determination of the η(')-proton scattering length in free space.
نویسندگان
چکیده
Taking advantage of both the high mass resolution of the COSY-11 detector and the high energy resolution of the low-emittance proton beam of the cooler synchrotron COSY, we determine the excitation function for the pp→ppη(') reaction close to threshold. Combining these data with previous results, we extract the scattering length for the η(')-proton potential in free space to be Re(a(pη(')))=0±0.43 fm and Im(a(pη(')))=0.37(-0.16)(+0.40) fm.
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ورودعنوان ژورنال:
- Physical review letters
دوره 113 6 شماره
صفحات -
تاریخ انتشار 2014