Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91103-6
H.R. Rubinstein, I. Talmi
{"title":"Quark model decay rates for spin 2+ mesons","authors":"H.R. Rubinstein, I. Talmi","doi":"10.1016/0031-9163(66)91103-6","DOIUrl":"10.1016/0031-9163(66)91103-6","url":null,"abstract":"<div><p>Both PP and PV decays can go only through symmetry breaking. An appropriate tensor interaction is introduced which is different for different quark-antiquark pairs. Agreement with experiment is good.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 693-695"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91103-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87338451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91104-8
Yasuo Hara
{"title":"Spin independence of total cross sections","authors":"Yasuo Hara","doi":"10.1016/0031-9163(66)91104-8","DOIUrl":"10.1016/0031-9163(66)91104-8","url":null,"abstract":"<div><p>In the Regge pole model with the Pomeranchuk trajectory dominance, total cross sections of particles with any spin are proved to be spin independent at high energies. The factorizability of total cross sections,<span><math><msup><mi></mi><mn>σ</mn></msup><mtext>ab</mtext><msup><mi></mi><mn>(s)</mn></msup><mtext> </mtext><msup><mi></mi><mn>σ</mn></msup><mtext>cd</mtext><msup><mi></mi><mn>(s)</mn></msup><mtext> − </mtext><msup><mi></mi><mn>σ</mn></msup><mtext>ac</mtext><msup><mi></mi><mn>(s)</mn></msup><mtext> </mtext><msup><mi></mi><mn>σ</mn></msup><mtext>bd</mtext><msup><mi></mi><mn>(s)</mn></msup><mtext> </mtext><mtext>→</mtext><mtext>s →∞</mtext><mtext>0</mtext></math></span>, is also proved.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 696-698"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91104-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91357482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91112-7
{"title":"Author index of volume 23","authors":"","doi":"10.1016/0031-9163(66)91112-7","DOIUrl":"https://doi.org/10.1016/0031-9163(66)91112-7","url":null,"abstract":"","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 721-735"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91112-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137400377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evidence for π+π− resonance at 1.5–1.6 GeV in 4.7 Ge Vc π-p- interaction","authors":"V.M. Guzhavin, G.K. Kliger, V.Z. Kolganov, A.V. Lebedev, G.S. Lomkatsi, V.T. Smolyankin, A.P. Sokolov, J.A. Vetlitsky","doi":"10.1016/0031-9163(66)91111-5","DOIUrl":"10.1016/0031-9163(66)91111-5","url":null,"abstract":"<div><p>Among 60 000 pictures obtained by means of 55 cm hydrogen bubble chamber exposed with 4.7 <span><math><mtext>Ge V</mtext><mtext>c</mtext></math></span> π<sup>-</sup> beam 349 events of the reaction <em>π</em><sup>-</sup><em>p</em> → <em>π</em><sup>+</sup><em>π</em><sup>-</sup><em>n</em> at small four momentum transfer have been selected. The distribution of the effective mass of π<sup>+</sup>π<sup>−</sup> system shows ϱ<sup>o</sup>-, f<sup>o</sup>- resonances and some enhancement at 1.5 - 1.6 GeV that may be interpreted as a resonance with <em>M</em> = 1549 ±30 <em>MeV</em>, <em>Γ</em> = 100 ±25 <em>MeV</em>.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 719-720"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91111-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83300325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91101-2
B. Bošnjaković, C. Van Der Leun
{"title":"T-forbidden excitation of isobaric analogue states in the 37Cl(p, α0)34S reaction","authors":"B. Bošnjaković, C. Van Der Leun","doi":"10.1016/0031-9163(66)91101-2","DOIUrl":"10.1016/0031-9163(66)91101-2","url":null,"abstract":"<div><p>The analogues of the two lowest levels of <sup>38</sup>Cl, with <em>J</em><sup><em>π</em></sup>=3<sup>-</sup> and 5<sup>-</sup>, were excited in the <em>T</em>-forbidden reaction <sup>37</sup>Cl(p, α<sub>o</sub>)<sup>34</sup>S. The <em>J</em><sup><em>π</em></sup>=3<sup>-</sup> analogue state is split into several components which form a micro-giant resonance.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 687-689"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91101-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91236158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The study of the A2-meson properties in the π−p- interactions at the incident π−-mesons momentum 3.25 GeV/c","authors":"M.S. Dubovikov, V.K. Grogoryev, A.P. Grishin, V.M. Guzhavin, G.K. Kliger, V.Z. Kolganov, A.V. Lebedev, G.S. Lomkatsi, Yu.A. Simonov, V.T. Smolyankin, A.P. Sokolov, G.D. Tikhomirov, K.A. Trostina, I.A. Vetlitsky, V.V. Vladimirsky, I.A. Yerofeev","doi":"10.1016/0031-9163(66)91110-3","DOIUrl":"10.1016/0031-9163(66)91110-3","url":null,"abstract":"<div><p>Using 55 cm hydrogen bubble chamber exposed in the π<sup>−</sup> - meson beam at 3.25 ±0.02 <em>GeV</em>/<em>c</em> 160 000 photographs were obtained and 2104 events of the reactions of the type <em>π</em><sup>-</sup><em>p</em> → <em>pπ</em><sup>+</sup><em>π</em><sup>-</sup><em>π</em><sup>-</sup> and 1766 events of the reactions of the type <em>π</em><sup>-</sup><em>p</em> → <em>pπ</em><sup>+</sup><em>π</em><sup>-</sup><em>π</em><sup>-</sup><em>π</em><sup><em>o</em></sup> were selected and analysed. In the spectrum of the effective masses of <em>π</em><sup>+</sup><em>π</em><sup>-</sup><em>π</em><sup>-</sup> system from the first reaction A<sub>2</sub>-mesons were selected and the analysis was made by means of different methods to determine the spin-parity of this resonance. The second reaction was used to study πη decay mode of the A<sub>2</sub>-meson.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 716-718"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91110-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88359515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91102-4
I. Kelson, G.T. Garvey
{"title":"Masses of nuclei with Z > N","authors":"I. Kelson, G.T. Garvey","doi":"10.1016/0031-9163(66)91102-4","DOIUrl":"10.1016/0031-9163(66)91102-4","url":null,"abstract":"<div><p>A phenomenological relation between ground-state atomic masses in conjuction with charge symmetry is used to investigate all the masses of nuclei with <em>A</em> ⩽ 42 with <em>Z</em> > <em>N</em>. In cases where experimental data exist the agreement with the predictions is good.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 689-692"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91102-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74144927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91100-0
J.F. Dicello , G. Igo, M.L. Roush
{"title":"The anomalous dip in total reaction cross sections in the nickel region","authors":"J.F. Dicello , G. Igo, M.L. Roush","doi":"10.1016/0031-9163(66)91100-0","DOIUrl":"10.1016/0031-9163(66)91100-0","url":null,"abstract":"<div><p>A dip in elemental reaction cross sections for protons, deuterons, and alpha particles has been observed previously in the vicinity of nickel. The present measurements on separated isotopes in the nickel region for 14.5 MeV protons reveal that the dip is associated with the relatively low average value of <em>N</em> for nickel.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 685-687"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91100-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76915327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91099-7
S. De Barros , P.L. Chevillon, V.D. Huynh, H.E. Jackson , J. Julien, J. Morgenstern, C. Samour
{"title":"Intermediate structure in the 59Co neutron total cross section between 0 and 500 keV","authors":"S. De Barros , P.L. Chevillon, V.D. Huynh, H.E. Jackson , J. Julien, J. Morgenstern, C. Samour","doi":"10.1016/0031-9163(66)91099-7","DOIUrl":"10.1016/0031-9163(66)91099-7","url":null,"abstract":"<div><p>The neutron strength function of cobalt has been measured for neutron energies between 0 and 500 keV. Intermediate structure in the form of oscillators with widths of about 40 keV is observed.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 683-685"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91099-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91522022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Physics LettersPub Date : 1966-12-19DOI: 10.1016/0031-9163(66)91108-5
S Knaak, G Süssmann, E Hilf, H Büttner
{"title":"Surface tension of nuclear matter","authors":"S Knaak, G Süssmann, E Hilf, H Büttner","doi":"10.1016/0031-9163(66)91108-5","DOIUrl":"10.1016/0031-9163(66)91108-5","url":null,"abstract":"<div><p>The surface tension σ and the surface density thickness <em>t</em> of nuclear matter have been calculated in the Fermi-gas model, the nucleons moving in a self-made shell model potential with a realistic slope and velocity dependence (parameters <em>a</em> and β). One gets the experimental values for σ and <em>t</em> with <em>a</em> and β agreeing with earlier data.</p></div>","PeriodicalId":101027,"journal":{"name":"Physics Letters","volume":"23 12","pages":"Pages 711-713"},"PeriodicalIF":0.0,"publicationDate":"1966-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-9163(66)91108-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74084978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}