Journal ArticleDOI
Measurement of γp→K+Λ and γp→K+Σ0 at photon energies up to 2 GeV
M. Q. Tran,J. Barth,C. Bennhold,M. Bockhorst,W. Braun,A. Budzanowski,G. Burbach,R. Burgwinkel,J. Ernst,K. H. Glander,S. Goers,B. Guse,K. M. Haas,J. Hannappel,K. Heinloth,K. Honscheid,T. Jahnen,N. Jöpen,H. Jüngst,H. Kalinowsky,U. Kirch,Frank Klein,Friedrich Klein,Eberhard Klempt,D. Kostrewa,A. Kozela,R. Lawall,L. Lindemann,J. Link,J. Manns,Terry Mart,D. Menze,H. Merkel,R. Merkel,W. Neuerburg,M. Paganetti,E. Paul,R. Plötzke,U. Schenk,J. Scholmann,I. Schulday,M. Schumacher,P. Schütz,W. J. Schwille,F. Smend,Jerzy Smyrski,W. Speth,H. N. Tran,H. van Pee,W. Vogl,R. Wedemeyer,F. Wehnes,B. Wiegers,F. W. Wieland,J. Wißkirchen,A. Wolf +55 more
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TLDR
In this article, the total and differential cross sections and hyperon polarizations were measured with the SAPHIR detector at the electron stretcher ring ELSA at Bonn, showing that the total cross section for Λ produces a strong threshold enhancement whereas the Σ 0 data have a maximum at about E γ = 1.45 GeV.About:
This article is published in Physics Letters B.The article was published on 1998-12-31. It has received 143 citations till now. The article focuses on the topics: Photon energy & Strangeness.read more
Citations
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Journal ArticleDOI
Spectroscopy of Λ hypernuclei
Osamu Hashimoto,Hirokazu Tamura +1 more
TL;DR: A review of the progress of Λ hypernuclear spectroscopy is described and future prospects are presented in this article, where the strengths of the spin-dependent Λ-nucleon interaction in the p -shell region were derived.
Journal ArticleDOI
Evidence for the positive-strangeness pentaquark Θ+ in photoproduction with the SAPHIR detector at ELSA
J. Barth,W. Braun,J. Ernst,K. H. Glander,J. Hannappel,N. Jöpen,H. Kalinowsky,Frank Klein,Eberhard Klempt,R. Lawall,J. Link,D. Menze,W. Neuerburg,M. Ostrick,E. Paul,H. van Pee,I. Schulday,W. J. Schwille,B. Wiegers,F. W. Wieland,J. Wißkirchen,C. Wu +21 more
TL;DR: The positivestrangeness baryon resonance Θ + is observed in photoproduction of the nK + K 0 s final state with the SAPHIR detector at the Bonn ELectron Stretcher Accelerator ELSA as mentioned in this paper.
Journal ArticleDOI
Progress towards understanding baryon resonances.
TL;DR: Recent results from photo- and electroproduction experiments provide intriguing indications for new states and shed light on the structure of some of the known nucleon excitations, and an overview of theoretical approaches are given.
Journal ArticleDOI
Measurement of gamma p ---> K+ Lambda and gamma p ---> K+ Sigma0 at photon energies up to 2.6-GeV
K. H. Glander,J. Barth,W. Braun,J. Hannappel,N. Jöpen,Friedrich Klein,Eberhard Klempt,R. Lawall,J. Link,D. Menze,W. Neuerburg,M. Ostrick,E. Paul,I. Schulday,W. J. Schwille,H. v. Pee,F. W. Wieland,J. Wißkirchen,C. Wu +18 more
TL;DR: In this paper, cross-sections and hyperon polarizations were measured in the energy range from threshold up to a photon energy of 26 GeV using the SAPHIR detector at the electron stretcher facility, ELSA.
Journal ArticleDOI
Hyperon photoproduction in the nucleon resonance region
J. W C McNabb,J. W C McNabb,R. A. Schumacher,L. Todor,G. S. Adams,E. Anciant,M. Anghinolfi,B. Asavapibhop,G. Audit,Thierry Auger,H. Avakian,H. Bagdasaryan,J. P. Ball,S. Barrow,M. Battaglieri,K. Beard,M. Bektasoglu,M. Bellis,B. L. Berman,Nicola Bianchi,A. S. Biselli,S. Boiarinov,B. E. Bonner,Sylvain Bouchigny,R. Bradford,D. Branford,W. J. Briscoe,W. K. Brooks,Volker D. Burkert,C. Butuceanu,J. R. Calarco,Daniel S. Carman,B. Carnahan,C. Cetina,L. Ciciani,Philip L. Cole,A. Coleman,A. D. Cords,P. Corvisiero,D. G. Crabb,Hall Crannell,J. P. Cummings,E. De Sanctis,R. DeVita,P. V. Degtyarenko,H. Denizli,L.C. Dennis,K. V. Dharmawardane,Kalvir S. Dhuga,Chaden Djalali,G. E. Dodge,D. Doughty,P. Dragovitsch,Michael Dugger,S. A. Dytman,M. Eckhause,Hovanes Egiyan,K. S. Egiyan,Latifa Elouadrhiri,A. Empl,P. Eugenio,R. Fatemi,R. J. Feuerbach,J. R. Ficenec,T. A. Forest,H. O. Funsten,S. J. Gaff,G. Gavalian,Shalev Gilad,Gerard Gilfoyle,K. L. Giovanetti,Patrick Girard,C. I O Gordon,K. A. Griffioen,M. Guidal,M. Guillo,L. Guo,V. Gyurjyan,Cynthia Marie Hadjidakis,R. S. Hakobyan,J. Hardie,D. Heddle,P. Heimberg,F. W. Hersman,K.H. Hicks,R. S. Hicks,M. Holtrop,J. Hu,C. E. Hyde-Wright,Y. Ilieva,M. M. Ito,David Jenkins,K. Joo,J. H. Kelley,M. Khandaker,K. Y. Kim,K. Kim,W. Kim,Avraham Klein,Friedrich Klein,Alexei V. Klimenko,M. Klusman,M. Kossov,Laird Kramer,Y. Kuang,S. E. Kuhn,J. Lachniet,J. M. Laget,D. Lawrence,Ji Li,K. Lukashin,J. J. Manak,C. Marchand,S. McAleer,J. S. McCarthy,Bernhard Mecking,S. Mehrabyan,J. J. Melone,M. D. Mestayer,C. A. Meyer,K. Mikhailov,R. C. Minehart,M. Mirazita,R. Miskimen,L. Morand,S. A. Morrow,Valeria Muccifora,James Mueller,G. S. Mutchler,J. Napolitano,Rakhsha Nasseripour,S. O. Nelson,S. Niccolai,G. Niculescu,I. Niculescu,B. B. Niczyporuk,R. A. Niyazov,M. Nozar,John T. O'Brien,G. V. O'Rielly,M. Osipenko,K. Park,E. Pasyuk,G. A. Peterson,S. A. Philips,N. Pivnyuk,Dinko Pocanic,O. Pogorelko,E. Polli,S. Pozdniakov,B. M. Preedom,J. W. Price,Y. Prok,D. Protopopescu,L. M. Qin,B. P. Quinn,B. A. Raue,G. Riccardi,G. Ricco,M. Ripani,Barry Ritchie,Federico Ronchetti,P. Rossi,D. Rowntree,P. D. Rubin,F. Sabatié,K. Sabourov,C. Salgado,J. P. Santoro,V. Sapunenko,V. S. Serov,A. Shafi,Y. G. Sharabian,J. Shaw,S. Simionatto,A. V. Skabelin,Elton Smith,L. C. Smith,D. I. Sober,M. Spraker,A.V. Stavinsky,S. Stepanyan,P. Stoler,I. I. Strakovsky,S. Strauch,M. Taiuti,S. Taylor,D. J. Tedeschi,U. Thoma,Roy Thompson,C. Tur,M. Ungaro,Michael Vineyard,A. V. Vlassov,K. Wang,Larry Weinstein,A. Weisberg,H. R. Weller,H. R. Weller,D. P. Weygand,C. S. Whisnant,E. Wolin,Michael Wood,A. Yegneswaran,J. Yun,Baile Zhang,Jing Zhao,Z. L. Zhou +207 more
TL;DR: In this article, high-statistics cross sections and recoil polarizations for the reactions gamma+p-->K++Lambda and gamma +p-->k++Sigma(0) have been measured at CLAS for center-of-mass energies between 1.6 and 2.3 GeV.
References
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Journal ArticleDOI
SU(3) chiral dynamics with coupled channels eta and kaon photoproduction
TL;DR: In this paper, the s-wave amplitudes of the SU(3) chiral meson-baryon Lagrangian with a coupled channel potential were identified in a Lippmann-Schwinger equation, and the strangeness S = −1 resonance Λ(1405) and the S 11(1535) nucleon resonance emerged as quasi-bound states of anti-kaon/nucleon and kaon/Σ-hyperon.
Journal ArticleDOI
Unitary model for meson-nucleon scattering
T. Feuster,Ulrich Mosel +1 more
TL;DR: In this paper, the nucleon resonance parameters were extracted from an effective Lagrangian model employing the K-matrix approximation and the background contributions were generated consistently from the relevant Feynman amplitudes, which significantly reduced the number of free parameters.
Journal ArticleDOI
Electromagnetic production of associated strangeness.
TL;DR: A formalism, based on an isobaric approach using Feynman diagrammatic techniques, which includes the nucleonic, hyperonic, and kaonic resonances, is developed, and the main findings are compared with the results of other recent phenomenological studies.
Journal ArticleDOI
Multipion and strange-particle photoproduction on protons at energies up to 5.8-GeV
R. Erbe,H.G. Hilpert,E. Schüttler,W. Struczinski,K. Lanius,A. Meyer,A. Pose,H. J. Schreiber,W. Johnssen,J. Moebes,B. Nellen,W. Tejessy,G. Horlitz,E. Lohrmann,H. Meyer,W. P. Swanson,M. W. Teucher,Guenter Wolf,S. Wolff,H. Alvensleben,D. Lüke,H. Spitzer,F. Storim,H. Beisel,H. Filthuth,H. Kolar,P. Steffen,P. Freund,Klaus Gottstein,Norbert Schmitz,P. Seyboth,J. Seyerlein +31 more
TL;DR: In this paper, a study of photoproduction at photon energies between 0.3 and 5.8 GeV in a hydrogen bubble chamber, approximately 1.7 million pictures containing about 31 000 events with three or more outgoing charged particles were analyzed.
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ELSA ‐ die neue Bonner Elektronen‐Stretcher‐Anlage
D. Husmann,W. J. Schwille +1 more
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