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41.
Richichi SJ Severini H Skubic P Undrus A Chen S Fast J Hinson JW Lee J Menon N Miller DH Shibata EI Shipsey IP Pavlunin V Cronin-Hennessey D Kwon Y Lyon AL Thorndike EH Jessop CP Marsiske H Perl ML Savinov V Ugolini D Zhou X Coan TE Fadeyev V Maravin Y Narsky I Stroynowski R Ye J Wlodek T Artuso M Ayad R Boulahouache C Bukin K Dambasuren E Karamnov S Kopp S Majumder G Moneti GC Mountain R Schuh S Skwarnicki T Stone S Viehauser G Wang JC Wolf A Wu J Csorna SE Danko I Zhou GJ 《Physical review letters》2000,85(3):520-524
In a sample of 19 x 10(6) produced B mesons, we have observed the decays B-->eta K(*) and improved our previous measurements of B-->eta'K. The branching fractions we measure for these decay modes are B(B+-->eta K(*+)) = (26.4(+9.6)(-8.2)+/-3.3)x10(-6), B(B(0)-->eta K(*0)) = (13.8(+5.5)(-4.6)+/-1.6)x10(-6), B(B(+)-->eta'K(+) = (80(+10)(-9)+/-7)x10(-6), and B(B(0)-->eta'K0) = (89(+18)(-16)+/-9)x10(-6). We have searched with comparable sensitivity for related decays and report upper limits for these branching fractions. 相似文献
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43.
R. Bizzarri G. Ciapetti U. Dore M. Gaspero I. Laakso F. Marzano G.C. Moneti 《Nuclear Physics B》1974,69(2):307-316
From the comparison of the frequency of antiproton annihilation at rest in two mesons in H2 and D2, the dominance of S-wave in annihilation at rest is confirmed, the P-wave contribution being less than 6% at the 95% confidence level. The apparent discrepancy between the channels and is due to the strong dependence of the annihilation dynamics from the angular momentum. 相似文献
44.
Pieraccini G Furlanetto S Orlandini S Bartolucci G Giannini I Pinzauti S Moneti G 《Journal of chromatography. A》2008,1180(1-2):138-150
The qualitative and quantitative determination of components of mainstream and sidestream smoke has been performed by solid-phase microextraction-gas chromatography-mass spectrometry. Several brands and types of cigarettes sold in Italy were considered: normal, mild, light, extra light, some with filter and some without. Extraction of the analytes was performed by means of solid-phase microextraction (SPME) and the optimisation of the extraction procedure was performed by experimental design, taking into consideration type of fiber polymer, exposure temperature and time. Sixty-seven components of mainstream and sidestream smoke were identified. The quantified compounds (by means of deuterium-labelled isotopologues) were benzene, toluene, p-xylene, m-xylene, pyridine, o-xylene, limonene, naphthalene, phenol and nicotine. Finally, a comparison between the chemical profile of smoke from the different cigarettes was made. 相似文献
45.
46.
Massimo Di Vaira Simonetta Moneti Maurizio Peruzzini Piero Stoppioni 《Journal of organometallic chemistry》1984,266(1):c8-c10
Reaction of the [(triphos)Co(E2S)]BF4 complexes (triphos = 1,1,1-tris(di-phenylphosphinomethyl)ethane, E = P or As) containing the P2S or As2S cyclic units trihapto(η3-bonded to the metal, with (C2H4)Pt(PPh3)2 involves insertion of the Pt(PPh3)2 moiety into a bond of the inorganic ring, yielding the compounds [(triphos)Co(E2S)Pt(PPh3)2]BPh4 (E = P or As), whose structures have been determined by X-ray diffraction studies. 相似文献
47.
Artuso M He D Goldberg M Horwitz N Kennett R Moneti GC Muheim F Mukhin Y Playfer S Rozen Y Stone S Thulasidas M Vasseur G Zhu G Bartelt J Csorna SE Egyed Z Jain V Sheldon P Akerib DS Barish B Chadha M Chan S Cowen DF Eigen G Miller JS O'Grady C Urheim J Weinstein AJ Acosta D Athanas M Masek G Paar H Sivertz M Bean A Gronberg J Kutschke R Menary S Morrison RJ Nakanishi S Nelson HN Nelson TK Richman JD Ryd A Tajima H Schmidt D Sperka D Witherell MS Procario M Yang S Balest R Cho K Daoudi M 《Physical review D: Particles and fields》1994,50(9):5484-5490
48.
Brown DN Fast J McIlwain RL Miao T Miller DH Modesitt M Payne D Shibata EI Shipsey IP Wang PN Battle M Ernst J Kwon Y Roberts S Thorndike EH Wang CH Dominick J Lambrecht M Sanghera S Shelkov V Skwarnicki T Stroynowski R Volobouev I Wei G Zadorozhny P Artuso M Goldberg M He D Horwitz N Kennett R Mountain R Moneti GC Muheim F Mukhin Y Playfer S Rozen Y Stone S Thulasidas M Vasseur G Zhu G Bartelt J Csorna SE Egyed Z Jain V Kinoshita K Edwards KW Ogg M Britton DI Hyatt ER MacFarlane DB Patel PM 《Physical review D: Particles and fields》1994,50(3):1884-1891
49.
50.
Haas P Hempstead M Jensen T Kagan H Kass R Behrends S Gentile T Guida JM Guida JA Morrow F Poling R Rosenfeld C Thorndike EH Tipton P Green J Namjoshi R Sannes F Stone R Alam MS Katayama N Kim IJ Sun CR Tanikella V Bortoletto D Chen A Garren L Goldberg M Horwitz N Jawahery A Lubrano P Moneti GC Csorna SE Mestayer MD Panvini RS Word GB Yi X Bean A Bobbink GJ Brock I Engler A Ferguson T Kraemer R Rippich C Sutton R Vogel H Bebek C Berkelman K Blucher E Cassel DG Copie T DeSalvo R DeWire JW 《Physical review letters》1986,56(26):2781-2784