共查询到20条相似文献,搜索用时 0 毫秒
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Anjos JC Appel JA Bean A Bracker SB Browder TE Cremaldi LM Duboscq JE Elliott JR Escobar CO Gibney MC Hartner GF Huber J Karchin PE Kumar BR Losty MJ Luste GJ Mantsch PM Martin JF McHugh S Menary SR Morrison RJ Nash T Pinfold J Punkar G Purohit MV Ross WR Santoro AF Schmidt DM Shoup AL Sliwa K Sokoloff MD Souza MH Sperka DJ Streetman ME Stundia AB Witherell MS 《Physical review D: Particles and fields》1992,45(7):R2177-R2180
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Anjos JC Appel JA Bean A Bracker SB Browder TE Cremaldi LM Duboscq JE Elliott JR Escobar CO Gibney MC Hartner GF Karchin PE Kumar BR Losty MJ Luste GJ Mantsch PM Martin JF McHugh S Menary SR Morrison RJ Nash T Pinfold J Punkar G Purohit MV Ross WR Santoro AF Schmidt DM Shoup AL Sliwa K Sokoloff MD Souza MH Sperka D Spalding WJ Streetman ME Stundia AB Witherell MS 《Physical review letters》1991,67(12):1507-1510
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Makoff G Barker AR Briere RA Gibbons LK Papadimitriou V Patterson JR Somalwar SV Wah YW Winstein B Winston R Woods M Yamamoto H Swallow EC Bock GJ Coleman R Enagonio J Hsiung YB Ramberg E Stanfield K Tschirhart R Yamanaka T Gollin GD Karlsson M Okamitsu K Debu P Peyaud B Turlay R Vallage B 《Physical review letters》1993,70(11):1591-1594
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Pocanić D Frlez E Baranov VA Bertl W Brönnimann Ch Bychkov M Crawford JF Daum M Khomutov NV Korenchenko AS Korenchenko SM Kozlowski T Kravchuk NP Kuchinsky NA Li W Minehart RC Mzhavia D Ritchie BG Ritt S Rozhdestvensky AM Sidorkin VV Smith LC Supek I Tsamalaidze Z VanDevender BA Wang Y Wirtz HP Ziock KO 《Physical review letters》2004,93(18):181803
Using a large acceptance calorimeter and a stopped pion beam we have made a precise measurement of the rare pi(+)-->pi(0)e(+)nu (pi(beta)) decay branching ratio. We have evaluated the branching ratio by normalizing the number of observed pi(beta) decays to the number of observed pi(+)-->e(+)nu (pi(e2)) decays. We find the value of Gamma(pi(+)-->pi(0)e(+)nu)/Gamma(total)=[1.036+/-0.004(stat)+/-0.004(syst)+/-0.003(pi(e2))]x10(-8), where the first uncertainty is statistical, the second systematic, and the third is the pi(e2) branching ratio uncertainty. Our result agrees well with the standard model prediction. 相似文献
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Butler F Fu X Nemati B Ross WR Skubic P Wood M Bishai M Fast J Gerndt E Hinson JW McIlwain RL Miao T Miller DH Modesitt M Payne D Shibata EI Shipsey IP Wang PN Gibbons L Kwon Y Roberts S Thorndike EH Coan TE Dominick J Fadeyev V Korolkov I Lambrecht M Sanghera S Shelkov V Skwarnicki T Stroynowski R Volobouev I Wei G Artuso M Gao M Goldberg M He D Horwitz N Moneti GC Mountain R Muheim F Mukhin Y Playfer S Rozen Y Stone S Xing X Zhu G Bartelt J Csorna SE Egyed Z Jain V Gibaut D Kinoshita K 《Physical review D: Particles and fields》1995,52(5):2656-2660
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Abachi S Derrick M Kooijman P Musgrave B Price L Repond J Sugano K Blockus D Brabson B Brom J Jung C Ogren H Rust DR Cork B Akerlof C Chapman J Errede D Ken MT Meyer DI Neal H Nitz D Thun R Tschirhart R Baringer P Bylsma BG DeBonte R Koltick D Low EH McIlwain RL Miller DH Ng CR Shibata E 《Physical review D: Particles and fields》1990,41(5):1414-1424