共查询到20条相似文献，搜索用时 15 毫秒
1.
D. Errede C. Akerlof J. Chapman N. Harnew P. Kesten S. Kooijman D.I. Meyer D. Nitz D. Rubin A.A. Seidl R. Thun T. Trinko M. Willutzky M. Derrick E. Fernandez R. Fries L. Hyman P. Kooijman J. Va&#x;Vra 《Physics letters. [Part B]》1984,149(6):519-523
A search was made in 29 GeV e+e? annihilations for heavy, neutral leptons decaying to e±X?(ν), where X is a muon or charged meson. Six events with isolated e±X? pairs were found for an intergrated luminosity of 106 pb?1. The expected background is 5.5 ± 2.2 events. Limits on depend on mass and range from 8 to 20 × 10?5 nb. 相似文献
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Yoshida H Chiba Y Endo I Hayashibara I Ohsugi T Taketani A Tanaka R Amako K Arai Y Boerner H Fukawa M Fukushima Y Ishihara N Kanzaki J Kondo T Maehata M Matsui T Odaka S Ogawa K Ohama T Sakamoto H Sakuda M Shirai J Sumiyoshi T Suekane F Teramoto Y Takasaki F Tsuboyama T Uehara S Unno Y Wake M Watase Y Yamada Y Noguchi Y Ono A Homma Y Hojyo Y Sakae H Hemmi Y Kikuchi R Kubo K Kurashige H Miyake K Nakamura T Sasao N Tamura N Tobimatsu K Haba J Kamitani T Kanematsu N Nagashima Y Osabe H Sakamoto S 《Physical review letters》1987,59(26):2915-2918
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Smith JR McNeil RR Breedon RE Kim GN Ko W Lander RL Maeshima K Malchow RL Rowe J Stuart D Imlay R Kirk P Lim J Metcalf W Myung SS Cheng CP Gu P Li J Li YK Ye MH Zhu YC Abashian A Gotow K Hu KP Low EH Mattson ME Piilonen L Sterner KL Lusin S Rosenfeld C Wang AT Wilson S Frautschi M Kagan H Kass R Trahern CG Abe K Fujii Y Higashi Y Kim SK Kurihara Y Maki A Nozaki T Omori T Sagawa H Sakai Y Sugimoto Y Takaiwa Y Terada S Walker R Kajino F Perticone D Poling R Thomas T Ishi Y Miyano K Miyata H 《Physical review D: Particles and fields》1990,42(3):949-951
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Zheng HW Perez P Auchincloss P Blanis D Bodek A Budd H Eno S Fry CA Harada H Ho YH Kim YK Kumita T Mori T Olsen SL Shaw NM Sill A Thorndike EH Ueno K Imlay R Kirk P Lim J McNeil RR Metcalf W Myung SS Cheng CP Gu P Li J Li YK Ye MH Zhu YC Abashian A Gotow K Hu KP Low EH Mattson ME Piilonen L Sterner KL Lusin S Rosenfeld C Wang AT Wilson S Frautschi M Kagan H Kass R Trahern CG Breedon RE Kim GN Ko W Lander RL Maeshima K Malchow RL Smith JR Stuart D Abe K Fujii Y Higashi Y Kim SK Kurihara Y Maki A 《Physical review D: Particles and fields》1990,42(3):737-747
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Igarashi S Myung SS Chiba R Hanaoka K Miyashita M Murata H Yokota H Bacala A Imlay R Kirk P McNeil RR Metcalf W Cheng CP Mao ZP Yan Y Xu YT Zhou HS Zhu YC Abashian A Gotow K Kajino F Naito F Childers R Darden C Edwards J Lusin S Rosenfeld C Wilson S Johnson D Frautschi M Kagan H Kass R Trahern CG Lee HY Ko W Lander RL Maeshima K Malchow RL Sparks K Williams MC Abe K Chakrabarti S Fujii Y Higashi T Ishimoto S Kurihara Y Maki A Nozaki T Omori T Perez P Sagawa H Sakai Y Sugimoto Y Takaiwa Y 《Physical review letters》1988,60(23):2359-2362
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Bowcock T Kinoshita K Mauskopf P Pipkin FM Procario M Wilson R Wolinski J Xiao D Baringer P Haas P Lam H Jawahery A Park CH Perticone D Poling R Fulton R Hempstead M Jensen T Johnson DR Kagan H Kass R Morrow F Whitmore J Chen W Dominick JM McIlwain RL Miller DH Ng CR Shibata EI Yao W Thorndike EH Alam MS Katayama N Kim IJ Li WC Lou XC Sun CR Bortoletto D Goldberg M Horwitz N Lubrano P Mestayer MD Moneti GC Sharma V Shipsey IP Skwarnicki T Csorna SE Letson T Brock IC Ferguson T Artuso M Bebek C 《Physical review D: Particles and fields》1989,40(1):263-266
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A search for excited lepton production in e+e- collisions was performed using the data collected by the DELPHI detector at LEP at centre-of-mass energies ranging from 189 GeV
to 209 GeV, corresponding to an integrated luminosity of approximately 600 pb-1. No evidence for excited lepton production was found. In searches for pair-produced excited leptons, lower mass limits were
established in the range 94–103 GeV/c2, depending on the channel and model assumptions. In searches for singly-produced excited leptons, upper limits on the parameter
f/Λ were established as a function of the mass. 相似文献
10.
Takaki H Haba J Abe K Amako K Arai Y Arima T Asano Y Chiba M Chiba Y Daigo M Fukawa M Fukushima Y Hemmi Y Higuchi M Hinode F Hirose T Homma Y Hoshi Y Hosoda N Ishihara N Kanatani E Kanda N Kanematsu N Kanzaki J Kikuchi R Kondo T Korhonen TT Krüger AE Kurashige H MacNaughton J Matsui T Miyake K Miura M Mori S Nagashima Y Nakamura T Nakano I Odaka S Ogawa K Ohama T Ohsugi T Ohyama H Okamoto A Ono A Oyama T Sakamoto H Sakuda M Sato M Sato N Shioden M Shirai J Shirakata M Sumiyoshi T Suzuki A 《Physical review letters》1993,71(1):38-41
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Adachi I Aihara H Dijkstra HB Enomoto R Fujii H Fujii K Fujii T Fujimoto J Fujiwara N Hayashii H Higashi S Iida N Imanishi A Ikeda H Ishii T Itoh R Iwasaki H Iwata S Kajikawa R Kamae T Kato S Kawabata S Kichimi H Kishida T Kobayashi M Kuroda S Kusuki N Maruyama A Maruyama K Masuda H Matsuda T Miyamoto A Morimoto T Nakamura K Nitoh O Noguchi S Ochiai F Okuno H Okusawa T Ohshima T Ozaki H Sato T Sai F Shimonaka J Shimozawa K Shirahashi A Sugahara R Sugiyama A Suzuki S Suwada T Takahashi K 《Physical review letters》1988,60(2):97-100
12.
Avery P Besson D Garren L Yelton J Kinoshita K Pipkin FM Procario M Wilson R Wolinski J Xiao D Zhu Y Ammar R Baringer P Coppage D Haas P Kwak N Lam H Ro S Kubota Y Nelson JK Perticone D Poling R Fulton R Jensen T Johnson DR Kagan H Kass R Morrow F Whitmore J Wilson P Bortoletto D Dominick J McIlwain RL Miller DH Ng CR Schaffner SF Shibata EI Shipsey IP Yao W Sparks K Thorndike EH Wang C Alam MS Kim IJ Li WC Lou XC Romero V Sun CR Wang P Zoeller MM Goldberg M Haupt T Horwitz N Jain V Mestayer MD 《Physical review D: Particles and fields》1991,43(11):3599-3610
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Aubert B Barate R Boutigny D Couderc F Karyotakis Y Lees JP Poireau V Tisserand V Zghiche A Grauges-Pous E Palano A Pompili A Chen JC Qi ND Rong G Wang P Zhu YS Eigen G Ofte I Stugu B Abrams GS Borgland AW Breon AB Brown DN Button-Shafer J Cahn RN Charles E Day CT Gill MS Gritsan AV Groysman Y Jacobsen RG Kadel RW Kadyk J Kerth LT Kolomensky YG Kukartsev G Lynch G Mir LM Oddone PJ Orimoto TJ Pripstein M Roe NA Ronan MT Wenzel WA Barrett M Ford KE Harrison TJ Hart AJ Hawkes CM Morgan SE 《Physical review letters》2005,95(4):042002
We search for strange-pentaquark states that have been previously reported by other experiments--the Theta (1540)(+), Xi(5)(1860)(--), and Xi(5)(1860)(0)--in 123 fb(-1) of data recorded with the BABAR detector at the PEP-II e(+)e(-) storage ring. We find no evidence for these states and set 95% confidence level upper limits on the number of Theta(1540)(+) and Xi(5)(1860)(--) pentaquarks produced per e(+)e(-) annihilation into qq and Gamma(4S) decay. For qq events the Theta(1540)(+) [Xi(5)(1860)(--)] limit is about 8 [4] times lower than the rates measured for ordinary baryons of similar mass. 相似文献
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Gomez-Cadenas JJ Heusch CA Abrams G Adolphsen CE Akerlof C Alexander JP Alvarez M Amidei D Baden AR Ballam J Barish BC Barklow T Barnett BA Bartelt J Blockus D Bonvicini G Boyarski A Boyer J Brabson B Breakstone A Brom JM Bulos F Burchat PR Burke DL Butler F Calvino F Cence RJ Chapman J Cords D Coupal DP DeStaebler HC Dorfan DE Dorfan JM Drell PS Feldman GJ Fernandez E Field RC Ford WT Fordham C Frey R Fujino D Gan KK Gidal G Gladney L Glanzman T Gold MS Goldhaber G Golding L Green A 《Physical review letters》1991,67(8):1007-1010
15.
Kim GN Kim EJ Son D Bacala A Imlay R Kirk P McNeil RR Metcalf W Cheng CP Mao ZP Yan Y Xu YT Zhu YC Abashian A Gotow K Kajino F Low E Naito F Piilonen L Childers R Darden C Lusin S Rosenfeld C Wilson S Frautschi M Kagan H Kass R Trahern CG Ko W Lander RL Maeshima K Malchow RL Higashi JR Kurihara Y Maki A Nozaki T Omori T Perez P Sagawa H Sakai Y Sugimoto Y Takaiwa Y Terada S Tsuchiya K Poling R Green J Park IH Sakamoto S Sannes F Schnetzer S Stone R Trentalange S Zimmerman D Miyano K Miyata H 《Physical review letters》1988,61(8):911-914
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Bowcock T Kinoshita K Pipkin FM Procario M Wilson R Wolinski J Xiao D Haas P Hempstead M Jensen T Johnson DR Kagan H Kass R Morrow FM Baringer P McIlwain RL Miller DH Ng CR Shibata EI Poling R Alam MS Katayama N Kim IJ Li WC Lou XC Sun CR Tanikella V Bortoletto D Goldberg M Holmes R Horwitz N Jawahery A Lubrano P Moneti GC Sharma V Shipsey IP Csorna SE Mestayer MD Brock IC Ferguson T Vogel H Bebek C Berkelman K Blucher E Byrd J Cassel DG Coffman DM Copie T DeSalvo R DeWire JW Ehrlich R Galik RS 《Physical review D: Particles and fields》1989,40(5):1701
17.
Abachi S Baringer P Bylsma BG DeBonte R Koltick D Low EH McIlwain RL Miller DH Ng CR Shibata EI Derrick M Kooijman P Loos JS Musgrave B Price LE Repond J Sugano K Blockus D Brabson B Brom J Jung C Ogren H Paik HW Rust DR Ackerlof C Chapman J Errede D Ken MT Meyer DI Nitz D Thun R Tschirhart R Neal H Cork B 《Physical review letters》1987,58(25):2627-2630
18.
Ford WT Qi N Read AL Smith JG Camporesi T De Sangro R Peruzzi I Piccolo M Hurst RB Pyrlik J Venuti JP Weinstein R Gettner MW Goderre GP Sleeman JC von Goeler E Chadwick GB Leedy RE Messner RL Moss LJ Muller F Nelson HN Ritson DM Rosenberg LJ Wiser DE Zdarko RW Groom DE Verdini PG Band HR Delfino MC Johnson JR Lavine TL Maruyama T Prepost R 《Physical review D: Particles and fields》1989,40(5):1385-1396
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Blaylock GT Bolton T Brown JS Bunnell KO Burnett TH Cassell RE Coffman D Cook V Coward DH Dorfan DE Dubois GP Eigen G Eisenstein BI Freese T Gladding G Grab C Heusch CA Hitlin DG Izen JM Köpke L Li A Lockman WS Mallik U Matthews CG Mir R Mockett PM Mozley RF Nemati B Odian A Parker J Parrish L Partridge R Pitman D Sadrozinski HF Scarlatella M Schalk TL Schindler RH Seiden A Simopoulos C Stockdale IE Stockhausen W Thaler JJ Toki W Tripsas B Villa F Wasserbaech S Wattenberg A Weinstein AJ 《Physical review letters》1987,58(21):2171-2174
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Li YK Li J Cheng CP Gu P Ye MH Zhu YC Imlay R Kirk P Lim J McNeil RR Metcalf W Myung SS Abashian A Gotow K Hu KP Low EH Mattson ME Piilonen L Sterner KL Lusin S Rosenfeld C Wang AT Wilson S Frautschi M Kagan H Kass R Trahern CG Breedon RE Kim GN Ko W Lander RL Maeshima K Malchow RL Smith JR Stuart D Abe K Fujii Y Higashi Y Kim SK Kurihara Y Maki A Nozaki T Omori T Sagawa H Sakai Y Sugimoto Y Takaiwa Y Terada S Walker RC Kajino F Perticone D Poling R Thomas T Ishi Y Miyano K Miyata H Sasaki T 《Physical review D: Particles and fields》1990,41(9):2675-2688
