Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-08-13
Physics
High Energy Physics
High Energy Physics - Experiment
10 pages, no figure; IJMPA's Volume No.26, Issue No. 25, Year 2011
Scientific paper
10.1142/S0217751X11054589
The recent multiple-solution problem in extracting physics information from a fit to the experimental data in high energy physics is reviewed in a mathematical viewpoint. All these multiple solutions were found via a fit process previously, while in this letter we prove that if the sum of two coherent Breit-Wigner functions is used to fit the measured distribution, there should be two and only two non-trivial solutions, and they are related to each other by analytical formulae. For real experimental measurements in more complicated situations, we also provide a numerical method to derive the other solution from the already obtained one. The excellent consistency between the exact solution obtained this way and the fit process justifies the method. From our results it is clear that the physics interpretation should be very different depending on which solution is selected. So we suggest that all the experimental measurements with potential multiple solutions be re-analyzed to find the other solution because the result is not complete if only one solution is reported.
Mo X. H.
Wang Pei
Yuan Chang-Zheng
Zhu Kehe
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