نتایج جستجو برای: muonic molecule

تعداد نتایج: 134365  

Journal: :Physical review letters 2001
A Czarnecki K Melnikov

We describe a new approach to computing energy levels of a nonrelativistic bound state of two constituents with masses M and m, by a systematic expansion in powers of m/M. After discussing the method, we demonstrate its potential with an example of the radiative recoil corrections to the Lamb shift and hyperfine splitting relevant for the hydrogen, muonic hydrogen, and muonium. A discrepancy be...

1994
C. Greub

We consider the transitions between electromagnetic bound states, such as the exclusive weak decay of a muonic atom into an electronic atom: (µ − Z) → (e − Z)¯ ν e ν µ. We show that relativistic effects in the atomic wave-functions are crucial for determining the rate. In the case of heavy atoms, the exclusive channel branching ratios exceed 10 −6 , possibly bringing the study of these rare dec...

Journal: :Physical review letters 2005
G S Adams M Chasse M Cravey J P Cummings I Danko J Napolitano D Cronin-Hennessy C S Park W Park J B Thayer E H Thorndike T E Coan Y S Gao F Liu R Stroynowski M Artuso C Boulahouache S Blusk J Butt E Dambasuren O Dorjkhaidav N Menaa R Mountain H Muramatsu R Nandakumar R Redjimi R Sia T Skwarnicki S Stone J C Wang K Zhang S E Csorna G Bonvicini D Cinabro M Dubrovin A Bornheim S P Pappas A J Weinstein R A Briere G P Chen T Ferguson G Tatishvili H Vogel M E Watkins N E Adam J P Alexander K Berkelman D G Cassel J E Duboscq K M Ecklund R Ehrlich L Fields R S Galik L Gibbons B Gittelman R Gray S W Gray D L Hartill B K Heltsley D Hertz L Hsu C D Jones J Kandaswamy D L Kreinick V E Kuznetsov H Mahlke-Krüger T O Meyer P U E Onyisi J R Patterson D Peterson J Pivarski D Riley J L Rosner A Ryd A J Sadoff H Schwarthoff M R Shepherd W M Sun J G Thayer D Urner T Wilksen M Weinberger S B Athar P Avery L Breva-Newell R Patel V Potlia H Stoeck J Yelton P Rubin C Cawlfield B I Eisenstein G D Gollin I Karliner D Kim N Lowrey P Naik C Sedlack M Selen J J Thaler J Williams J Wiss K W Edwards D Besson K Y Gao D T Gong Y Kubota B W Lang S Z Li R Poling A W Scott A Smith C J Stepaniak J Urheim Z Metreveli K K Seth A Tomaradze P Zweber J Ernst A H Mahmood K Arms K K Gan D M Asner S A Dytman S Mehrabyan J A Mueller V Savinov Z Li A Lopez H Mendez J Ramirez G S Huang D H Miller V Pavlunin B Sanghi E I Shibata I P J Shipsey

The decay branching fractions of the three narrow Upsilon resonances to mu(+)mu(-) have been measured by analyzing about 4.3 fb(-1) e(+)e(-) data collected with the CLEO III detector. The branching fraction B(Upsilon(1S)-->mu(+)mu(-))=(2.49+/-0.02+/-0.07)% is consistent with the current world average, but B(Upsilon(2S)-->mu(+)mu(-))=(2.03+/-0.03+/-0.08)% and B(Upsilon(3S)-->mu(+)mu(-))=(2.39+/-...

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