Likelihood of a zero in the proton elastic electric form factor

2024/12/13 by Peng Cheng, Zhao-Qian Yao, Cheng, Peng +5 · 2 citations
Physics and Astronomy · Earth and Planetary Sciences · Engineering · #Quantum, superfluid, helium dynamics #High-pressure geophysics and materials #Geophysics and Sensor Technology

paper · pdf · doi:10.48550/arxiv.2412.10598

Abstract

Working with the 29 available data on the ratio of proton electric and magnetic form factors, μ_p G_E^p(Q²)/ G_M^p(Q²), and independent of any model or theory of strong interactions, we use the Schlessinger point method to objectively address the question of whether the ratio possesses a zero and, if so, its location. Our analysis predicts that, with 50% confidence, the data are consistent with the existence of a zero in the ratio on Q² ≤ 10.37 GeV². The level of confidence increases to 99.9% on Q² ≤ 13.06 GeV². Significantly, the likelihood that existing data are consistent with the absence of a zero in the ratio on Q² ≤ 14.49 GeV² is 1/1-million.

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