Erlangen 2026 – scientific programme
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T: Fachverband Teilchenphysik
T 67: Top Physics III
T 67.7: Talk
Thursday, March 19, 2026, 17:45–18:00, KH 00.011
New method for extracting the mass of valence quarks in protons — •Jianming Wang — Department of Physics, Lanzhou University, Lanzhou, China
In this paper, the extraction of the mass of valence quarks in protons no longer depends on the exact mass of each quark, but seeks the exact mass ratio of different valence quarks in the same system through experiments. By finding the exact ratio of the mass of the up quark and the down quark, the relationship among the three valence quarks can be found. Based on the experimental results of Seaquest carried out by Fermilab in 2021, through analysis, the accurate ratio of up quark to down quark mass (mu/md=0.707) is obtained, and the mass triangle is established. It is deduced that the sum of squares of up quark mass in protons is equal to the square of down quark mass. The mathematical expression is: mu2+mu2=md2.
Keywords: valence quark; quark law; three generation proton; exact ratio; new method