A Storage Ring Experiment to Detect a Proton Electric Dipole Moment

V. Anastassopoulos , S. Andrianov , R. Baartman , M. Bai , S. Baessler , J. Benante , M. Berz , M. Blaskiewicz

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T. Bowcock K. Brown B. Casey M. Conte J. Crnkovic G. Fanourakis A. Fedotov P. Fierlinger W. Fischer M.O. Gaisser Y. Giomataris M. Grosse-Perdekamp G. Guidoboni S. Haciomeroglu G. Hoffstaetter H. Huang M. Incagli A. Ivanov D. Kawall B. Khazin Y.I. Kim B. King I.A. Koop R. Larsen D.M. Lazarus V. Lebedev M.J. Lee S. Lee Y.H. Lee A. Lehrach P. Lenisa P. Levi Sandri A.U. Luccio A. Lyapin W. MacKay R. Maier K. Makino N. Malitsky W.J. Marciano W. Meng F. Meot E.M. Metodiev L. Miceli D. Moricciani W.M. Morse S. Nagaitsev S.K. Nayak Y.F. Orlov C.S. Ozben S.T. Park A. Pesce P. Pile V. Polychronakos B. Podobedov J. Pretz V. Ptitsyn E. Ramberg D. Raparia F. Rathmann S. Rescia T. Roser H. Kamal Sayed Y.K. Semertzidis Y. Senichev A. Sidorin A. Silenko N. Simos A. Stahl E.J. Stephenson H. Stroeher M.J. Syphers J. Talman R.M. Talman V. Tishchenko C. Touramanis N. Tsoupas G. Venanzoni K. Vetter S. Vlassis E. Won G. Zavattini A. Zelenski K. Zioutas

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classification ⚛️ physics.acc-ph hep-ex

keywords experimentdetectdipoleelectricmomentprotonringstorage

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A new experiment is described to detect a permanent electric dipole moment of the proton with a sensitivity of $10^{-29}e\cdot$cm by using polarized "magic" momentum $0.7$~GeV/c protons in an all-electric storage ring. Systematic errors relevant to the experiment are discussed and techniques to address them are presented. The measurement is sensitive to new physics beyond the Standard Model at the scale of 3000~TeV.

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First Experimental Limit on the Permanent Electric Dipole Moment of the Deuteron
nucl-ex 2026-02 unverdicted novelty 8.0

First experimental limit on deuteron EDM: |d^d| < 2.5 × 10^{-17} e·cm (95% CL) from observed spin-axis tilts in a magnetic storage ring.