Download or read book Electromagnetic Production of Hyperon Resonances written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of hyperon resonances has entered a new era of precision with advent of high-statistics photoproduction data from the CLAS detector at Jefferson Lab. These data have multi-particle final states, allowing clean identification of exclusive reactions associated with strange mesons and baryons. Examples of physics results are: evidence for isospin interference in the decay of the [Lambda](1405) resonance; a strong suggestion of meson cloud effects in the structure of the [Sigma](1385) resonance; data from K* photoproduction that will test the existence of the purported K0(800)$ meson. Properties of other hyperon resonances will also be studied in the near future.
Download or read book Production of Resonances Using CLAS at Jefferson Lab written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of hadronic resonances produced in photoproduction reactions at Jefferson Lab are shown and discussed. Emphasis is placed on the production of the excited hyperon states Sigma(1385), Lambda(1405), and Lambda(1520). Some future prospects for the upcoming Jefferson Lab 12 GeV era are given, where the CLAS12 and GlueX detectors will see unprecedented amounts of data using electromagnetic probes and further our knowledge of hadronic resonances.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hyperon Resonances 70 written by Earle Cabell Fowler and published by . This book was released on 1970 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NSTAR 2004 written by Jean-Paul Bocquet and published by World Scientific. This book was released on 2004 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers recent advances in the field of nucleon resonances presented at the IX International Workshop on the Physics of Excited Baryons, NSTAR2004. A complete overview of the most recent experimental results obtained worldwide on baryon spectroscopy is presented together with theoretical progress on related topics ranging from resonance parameters extraction to lattice-QCD calculations through effective field theory. Of particular interest, a large part of the book is devoted to exotic states with quantum numbers of pentaquarks, whose recent discovery represents a new chapter in hadronic physics.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Sciences
Download or read book Hyperon AND Hyperon Resonance Properties From Charm Baryon Decays At BaBar written by and published by . This book was released on 2007 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes studies of hyperons and hyperon resonances produced in charm baryon decays at BABAR. Using two-body decays of the?{sub c}° and?{sub c}°, it is shown, for the first time, that the spin of the?− is 3/2. The?− analysis procedures are extended to three-body final states and properties of the?(1690)° are extracted from a detailed isobar model analysis of the?{sub c} →?{bar K}°K+ Dalitz plot. The mass and width values of the?(1690)° are measured with much greater precision than attained previously. The hypothesis that the spin of the?(1690) resonance is 1/2 yields an excellent description of the data, while spin values 3/2 and 5/2 are disfavored. The?a0(980)+ decay mode of the?{sub c}+ is observed for the first time. Similar techniques are then used to study?(1530)° production in?{sub c}+ decay. The spin of the?(1530) is established for the first time to be 3/2. The existence of an S-wave amplitude in the?−?+ system is shown, and its interference with the?(1530)° amplitude provides the first clear demonstration of the Breit-Wigner phase motion expected for the?(1530). The?−?+ mass distribution in the vicinity of the?(1690)° exhibits interesting structure which may be interpreted as indicating that the?(1690) has negative parity.
Download or read book The IVth International Conference on Quarks and Nuclear Physics written by Antonio Dobado and published by Springer Science & Business Media. This book was released on 2008-11-07 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The QNP series of international conferences on Quarks and Nuclear Physics is by now a well established and highly respected forum where the most recent developments in the field are discussed and communicated. QNP 2006 is the forth edition of this biennial meeting. Selected and refereed original contributions of QNP 2006 have been published in The European Physical Journal A - Hadrons and Nuclei (EPJ A), while the present proceedings book, in addition to reprinting the articles published in EPJ A, further includes all other contributions selected and accepted by the organizing committee for publication and archiving.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1971 with total page 1330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1990 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Resonances in Nonlinear Optics written by Michel Neviere and published by CRC Press. This book was released on 2000-09-20 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is devoted to the numerous phenomena arising from the interplay between electromagnetic resonances and nonlinear optical interactions. These resonances are associated with surface plasmas or guided waves, excited in nonlinear optical resonators such as prisms or grating couplers. Topics include rigorous theories of diffraction by gratings
Download or read book DECAY PROPERTIES OF THE E HYPERON AND E RESONANCES written by and published by . This book was released on 1966 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sample of 2500?− and 500?° hyperons, produced in?K,?K?, and?K?? final states by K− (in H2) at incident momenta of 1.7 to 2.7 BeV/c, has been analyzed. The data are from an exposure (K-63) of 26 events/?b in the 72-inch bubble chamber; approximately 85% of the?− events and 60% of the?° events have been analyzed. For the?, they determine the spin and decay parameters a{sub?} and?{sub?} = tan−1 (?{sub?}/?{sub?}). Combining their data with 900?− and 150?° events from an earlier experiment (K-72), they obtain the following results: (1)? spin - J = 1/2 favored over J = 3/2 by ≈ 2.5 standard deviations; (2)? decay parameters (assuming a{sub {Lambda}} = 0.647 ± 0.048) - a{sub?−} = -0.398 ± 0.041,?{sub?−} = 9.8{sup o} ± 9.0{sup o}; a{sub?°} = -0.413 ± 0.104. They observe?*(1530) and?*(1817); their data are insufficient for analysis of suggested {Xi}* resonances at 1705 and 1933 MeV. They measure the {Xi}*(1530) electromagnetic mass difference?m = m({Xi}*−) = m({Xi}*°) = 2.0 ± 3.2 MeV. Using data, part of which has already been described, they find for {Xi}*(1530): J ≥ 3/2 favored over J = 1/2 (the J = 1/2 hypothesis is ≈ 3.5% as probable as the J = 3/2 hypothesis); J{sup P} = 3/2 favored over 3/2− by ≈ 2.8 standard deviations. For {Xi}*(1817) decaying into {Xi}*(1530) +?, the hypotheses J{sup P} = 1/2+, 1/2−, 3/2−, 5/2+, 7/2−, etc. (corresponding to l = 1, 2, 0 and 2, 1 and 3, and 2 and 4, respectively) are favored over other hypotheses, but results are inconclusive due to large background.
Download or read book High Energy Physics Index written by and published by . This book was released on 1989 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the International Symposium Electrophotoproduction of Strangeness on Nucleons and Nuclei written by K. Maeda and published by World Scientific. This book was released on 2004 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains important papers on the strangeness production processes and strangeness nuclear physics resulting from electromagnetic interaction. Both experimentalists and theorists in the field present information on recent activities and discuss the prospects of related fields.
Download or read book Zeitschrift F r Naturforschung written by and published by . This book was released on 1997 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hadron and Nuclear Physics with Electromagnetic Probes written by K. Maruyama and published by Elsevier. This book was released on 2000-10-20 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the main research areas were photonuclear reactions and meson productions by using the first high-duty tagged photon beam and the TAGX spectrometer. Although this field is developing quite rapidly, the synchrotron was closed in 1999 after 37 years of operation, and these activities continue at new facilities. It was therfore a good time to discuss the present status and future directions of this field at this occasion. The Symposium was attended by 85 physicists and 35 talks were presented. This book contains the papers presented in the scientific program of the Symposium. aspects of kaon photoproduc
Download or read book Photoproduction of and 0 Hyperons Off Protons in the Nucleon Resonance Region Using CLAS at Jefferson Lab written by and published by . This book was released on 2002 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The differential cross section and hyperon recoil polarizations of the photoproduction of the ground state hyperons, ? p → K+ ? and ? p → K+ ?0 , have been measured with the CLAS at Jefferson Lab up to a photon energy in the lab of 2.325 GeV. The results for both channels show significantly larger cross section in the middle to forward angles than have been observed previously by the SAPHIR Collaboration. Both reactions show significantly more backward peaking in the angular distributions than has previously been possible to observe. The backward peaking hints that hyperon resonances in the u-channel play a significant role in the production mechanism. In addition, in the ? p → K+ ? reaction, a previously unobserved bump in the cross section was observed at forward angles, centered on a W of 1.95 GeV with a width of approximately ? = 100 MeV. In both ? p → K+ Y reactions the recoil polarization in the forward direction seems reasonably well reproduced by t-channel interferences in a Regge model calculation as well as hadrodynamic models that include kaon resonances in the t-channel. The recoil polarization for ? p → K+ ? shows a significant enhancement around a W of 1.9 GeV in the backward angles, which is a sign of resonance activity in this vicinity. The polarization of ? p → K+ ?0 at backward angles is, in contrast, less pronounced and mostly consistent with zero.
Download or read book INIS Atomindex written by and published by . This book was released on 1995 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
