In this talk we investigate the possibility that states that have a mixed quarkonium‐gluonium content exist and would be their spectroscopy. The beginning of this analysis was inspired by questions raised about the nature of ι(1440). The analysis will include mass spectroscopy, radiative decays and production data for such states from J/ψ and ψ’(3685) as well as prospects for the future.
{"title":"Mixtures of quarkonium and gluonium.","authors":"Frank, O'Donnell","doi":"10.1063/1.35395","DOIUrl":"https://doi.org/10.1063/1.35395","url":null,"abstract":"In this talk we investigate the possibility that states that have a mixed quarkonium‐gluonium content exist and would be their spectroscopy. The beginning of this analysis was inspired by questions raised about the nature of ι(1440). The analysis will include mass spectroscopy, radiative decays and production data for such states from J/ψ and ψ’(3685) as well as prospects for the future.","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"15 1","pages":"1739-1743"},"PeriodicalIF":0.0,"publicationDate":"2008-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84976986","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}
The covariant oscillator quark model, which was extended recently so as to include the one‐gluon exchange effect, is applied to investigate the mass spectrum of light‐quark mesons. Our effective OGE potential is given as a sum of the Coulomb‐like and the hyperfine interaction and has a similar feature, except for lacking the spin‐orbit interaction, as in the usual non‐relativistic model. However, there are essential differences between them. First our scheme is manifestly covariant and the potential is concerned with hadron mass‐square. Second the Coulomb potential is modified largely. Due to these modifications we obtain a remarkable improvement in reproducing the experimental behaviors of the meson spectrum.
{"title":"Light-quark meson spectrum in the covariant oscillator quark model with one-gluon-exchange effects.","authors":"Ishida, Yamada","doi":"10.1063/1.35365","DOIUrl":"https://doi.org/10.1063/1.35365","url":null,"abstract":"The covariant oscillator quark model, which was extended recently so as to include the one‐gluon exchange effect, is applied to investigate the mass spectrum of light‐quark mesons. Our effective OGE potential is given as a sum of the Coulomb‐like and the hyperfine interaction and has a similar feature, except for lacking the spin‐orbit interaction, as in the usual non‐relativistic model. However, there are essential differences between them. First our scheme is manifestly covariant and the potential is concerned with hadron mass‐square. Second the Coulomb potential is modified largely. Due to these modifications we obtain a remarkable improvement in reproducing the experimental behaviors of the meson spectrum.","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"40 1","pages":"265-281"},"PeriodicalIF":0.0,"publicationDate":"2008-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74021805","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}
We study contributions from baryon resonance excitations to the Q2 dependence of the Gerasimov‐Drell‐Hearn sum rule. The results indicate that the sum rule at small Q2 is largely saturated by contribution from the lower mass resonant states. We find a strong Q2 dependence of the resonant contributions, leading even to a sign change of the sum rule integral at Q2∼0.8 GeV2. The global Q2 dependence indicates discrepencies to the interpretation of the EMC polarized structure function data on Ap1 in the resonance region, which can be largely attributed to the elimination of the P33(1232) resonance from the EMC analysis.
{"title":"What do we know about the Q2 evolution of the Gerasimov-Drell-Hearn sum rule?","authors":"Burkert, Li","doi":"10.1063/1.42988","DOIUrl":"https://doi.org/10.1063/1.42988","url":null,"abstract":"We study contributions from baryon resonance excitations to the Q2 dependence of the Gerasimov‐Drell‐Hearn sum rule. The results indicate that the sum rule at small Q2 is largely saturated by contribution from the lower mass resonant states. We find a strong Q2 dependence of the resonant contributions, leading even to a sign change of the sum rule integral at Q2∼0.8 GeV2. The global Q2 dependence indicates discrepencies to the interpretation of the EMC polarized structure function data on Ap1 in the resonance region, which can be largely attributed to the elimination of the P33(1232) resonance from the EMC analysis.","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"43 1","pages":"46-50"},"PeriodicalIF":0.0,"publicationDate":"2008-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86432748","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}
We use an empirical, perturbative approach to the fermion mass matrix to derive the Wolfenstein form of the KM matrix as a power series in the Cabibbo angle parameter λ=sinθC. With the aid of an SU(3) family symmetry, we extend the theory to neutrinos and we make predictions about their Dirac masses and mixing angles.
{"title":"Derivation of the Wolfenstein form of the Kobayashi-Maskawa matrix from fermion masses.","authors":"Rosén","doi":"10.1063/1.34960","DOIUrl":"https://doi.org/10.1063/1.34960","url":null,"abstract":"We use an empirical, perturbative approach to the fermion mass matrix to derive the Wolfenstein form of the KM matrix as a power series in the Cabibbo angle parameter λ=sinθC. With the aid of an SU(3) family symmetry, we extend the theory to neutrinos and we make predictions about their Dirac masses and mixing angles.","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"1 1","pages":"208-210"},"PeriodicalIF":0.0,"publicationDate":"2008-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75275742","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}
Pub Date : 1996-12-15DOI: 10.1103/physrevd.54.7138
Bar-Kana
{"title":"Limits on a stochastic background of gravitational waves from gravitational lensing.","authors":"Bar-Kana","doi":"10.1103/physrevd.54.7138","DOIUrl":"https://doi.org/10.1103/physrevd.54.7138","url":null,"abstract":"","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"54 12","pages":"7138-7145"},"PeriodicalIF":0.0,"publicationDate":"1996-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physrevd.54.7138","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20892628","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}
Pub Date : 1996-12-15DOI: 10.1103/physrevd.54.7261
Zhuge, Centrella, McMillan
{"title":"Gravitational radiation from the coalescence of binary neutron stars: Effects due to the equation of state, spin, and mass ratio.","authors":"Zhuge, Centrella, McMillan","doi":"10.1103/physrevd.54.7261","DOIUrl":"https://doi.org/10.1103/physrevd.54.7261","url":null,"abstract":"","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"54 12","pages":"7261-7277"},"PeriodicalIF":0.0,"publicationDate":"1996-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physrevd.54.7261","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20892644","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}
Pub Date : 1996-12-15DOI: 10.1103/physrevd.54.7328
Esposito, Kamenshchik, Kirsten
{"title":"One-loop effective action for Euclidean Maxwell theory on manifolds with a boundary.","authors":"Esposito, Kamenshchik, Kirsten","doi":"10.1103/physrevd.54.7328","DOIUrl":"https://doi.org/10.1103/physrevd.54.7328","url":null,"abstract":"","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"54 12","pages":"7328-7337"},"PeriodicalIF":0.0,"publicationDate":"1996-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physrevd.54.7328","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20892650","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}
Pub Date : 1996-12-15DOI: 10.1103/physrevd.54.7353
Gundlach, Martín-García
{"title":"Charge scaling and universality in critical collapse.","authors":"Gundlach, Martín-García","doi":"10.1103/physrevd.54.7353","DOIUrl":"https://doi.org/10.1103/physrevd.54.7353","url":null,"abstract":"","PeriodicalId":79708,"journal":{"name":"Physical review. D, Particles and fields","volume":"54 12","pages":"7353-7360"},"PeriodicalIF":0.0,"publicationDate":"1996-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1103/physrevd.54.7353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20892652","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}
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