R
R. P. Haddock
Researcher at University of California, Los Angeles
Publications - 28
Citations - 1172
R. P. Haddock is an academic researcher from University of California, Los Angeles. The author has contributed to research in topics: Annihilation & Antiproton. The author has an hindex of 15, co-authored 28 publications receiving 1132 citations. Previous affiliations of R. P. Haddock include University of Mainz.
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Journal ArticleDOI
The crystal barrel spectrometer at LEAR
E. Aker,Claude Amsler,I. Augustin,C. A. Baker,B. M. Barnett,C. J. Batty,R. Beckmann,P. Birien,James A. Bistirlich,P. Blüm,R. Bossingham,H. Bossy,K. Braune,D.V. Bugg,Mark J. Burchell,T. Case,S. Cierjacks,Kenneth M. Crowe,K. Dederichs,Michael Doser,W. Dünnweber,H. Emerich,D. Engelhardt,M. A. Faessler,C. Felix,G. Folger,J.M. Friedrich,R. Hackmann,R. P. Haddock,H. Hammer,F. H. Heinsius,N. P. Hessey,P. Illinger,D. Jamnik,H. Kalinowsky,B. Kämmle,T. Kiel,Eberhard Klempt,H. Koch,C. Kolo,K. Königsmann,F. Krennrich,Marcel Kunze,R. Landua,J. Lüdemann,H. Matthaey,M. Merkel,J. P. Merlo,C. A. Meyer,U. Meyer-Berkhout,L. Montanet,A. Noble,K. Peters,W. Rohrbach,A. H. Sanjari,E. Schäfer,B. Schmid,W. Schott,K. Sidiropoulos,S. Spanier,A. Staude,Chr. Strassburger,U. Strohbusch,M. Suffert,C. Sutton,D. Urner,C. Völcker,D. Walther,S. M. Walther,Ch. Weddigen,U. Wiedner,N. Winter,J. Zoll,Č. Zupančič +73 more
TL;DR: In this paper, the crystal Barrel spectrometer used at LEAR, CERN to study the products of pd annihilations is described and the performance of the detector is discussed.
Journal ArticleDOI
Observation of two JPC=0++ isoscalar resonances at 1365 and 1520 MeV
V. V. Anisovich,D. S. Armstrong,I. Augustin,C.A. Baker,B. M. Barnett,C.J. Batty,K. Beuchert,P. Birien,P. Blüm,R. Bossingham,K. Braune,J. Brose,D.V. Bugg,Mark J. Burchell,T. Case,A. Cooper,K.M. Crowe,T. Degener,H. P. Dietz,Michael Doser,W. Dünnweber,D. Engelhardt,M. Englert,M. A. Faessler,C. Felix,G. Folger,R. Hackmann,R. P. Haddock,F. H. Heinsius,Nigel Hessey,Pàl Hidas,P. Illinger,D. Jamnik,Z. Jávorfi,H. Kalinowsky,B. Kämmle,T. Kiel,J. Kisiel,Eberhard Klempt,Michael Kobel,H. Koch,C. Kolo,K. Königsmann,Marcel Kunze,R. Landua,J. Lüdemann,H. Matthäy,M. Merkel,J. P. Merlo,C. A. Meyer,L. Montanet,A. Noble,Krisztian Peters,C. N. Pinder,G. Pinter,S. Ravndal,J. Salk,A. H. Sanjari,A. V. Sarantsev,E. Schäfer,B. Schmid,P. Schmidt,S. Spanier,C. Straßburger,U. Strohbusch,M. Suffert,C. Völcker,F. Walter,D. Walther,U. Wiedner,N. Winter,J. Zoll,B. S. Zou +72 more
TL;DR: In this article, a simultaneous analysis of data on pp → ππ0π0 and pp → ηηπ0 at rest, two I = 0, JPC = 0++ resonances are identified above 1 GeV.
Journal ArticleDOI
High-statistics study of f0(1500) decay into π0π0
Claude Amsler,D. S. Armstrong,I. Augustin,C.A. Baker,B.M. Barnett,C.J. Batty,K. Beuchert,P. Birien,P. Blüm,R. Bossingham,K. Braune,J. Brose,Mark J. Burchell,T. Case,S. U. Chung,O. Cramer,Kenneth M. Crowe,T. Degener,H. P. Dietz,S. v. Dombrowski,Michael Doser,W. Dünnweber,D. Engelhardt,M. Englert,M. A. Faessler,C. Felix,R. Hackmann,R. P. Haddock,F. H. Heinsius,M. Herz,Nigel Hessey,Pàl Hidas,P. Illinger,D. Jamnik,H. Kalinowsky,B. Kämmle,T. Kiel,J. Kisiel,Eberhard Klempt,Michael Kobel,Herbert Koch,C. Kolo,K. Königsmann,Marcel Kunze,M. Lakata,R. Landua,F. Loser,J. Lüdemann,H. Matthäy,M. Merkel,J. P. Merlo,C. A. Meyer,L. Montanet,A. Noble,F. Ould-Saada,K. Peters,C. N. Pinder,G. Pinter,S. Ravndal,C. Regenfus,J. Salk,E. Schäfer,P. Schmidt,R. Seibert,S. Spanier,H. Stöck,C. Straßburger,U. Strohbusch,M. Suffert,U. Thoma,D. Urner,C. Völcker,F. Walter,D. Walther,U. Wiedner,N. Winter,J. Zoll,Č. Zupančič +77 more
TL;DR: In this article, a partial wave analysis of the reaction p p →π 0 π 0 0 0 ε 0 has been performed using a high-quality high-statistics data set of 712 000 events.
Journal ArticleDOI
Coupled channel analysis of pp annihilation into π0π0π0, π0ηη and π0π0η
Claude Amsler,D. S. Armstrong,C.A. Baker,B. M. Barnett,C.J. Batty,M. Benayoun,K. Beuchert,P. Birien,P. Blüm,R. Bossingham,K. Braune,J. Brose,D.V. Bugg,T. Case,S. U. Chung,A. Cooper,O. Cramer,Kenneth M. Crowe,T. Degener,H. P. Dietz,N. Djaoshvili,S. v. Dombroski,Michael Doser,W. Dünnweber,D. Engelhardt,M. Englert,M. A. Faessler,C. Felix,P. Giarritta,R. Hackmann,R. P. Haddock,F. H. Heinsius,M. Herz,N.P. Hessey,Pàl Hidas,C. Holzhaussen,P. Illinger,D. Jamnik,H. Kalinowsky,B. Kalteyer,B. Kämmle,T. Kiel,J. Kisiel,Eberhard Klempt,Herbert Koch,Michael Kobel,C. Kolo,Marcel Kunze,M. Lakata,R. Landua,J. Lüdemann,H. Matthäy,R. McCrady,J. P. Merlo,C. A. Meyer,L. Montanet,A. Noble,R. Ouared,F. Ould-Saada,K. Peters,C. N. Pinder,G. Pinter,S. Ravndal,C. Regenfus,E. Schäfer,P. Schmidt,M. Schütrumpf,R. Seibert,S. Spanier,H. Stöck,C. Straßburger,U. Strohbusch,M. Suffert,U. Thoma,M. Tischhäuser,D. Urner,C. Völcker,F. Walter,D. Walther,U. Wiedner,N. Winter,J. Zoll,B. S. Zou,Č. Zupančič +83 more
TL;DR: In this paper, the IG(JPC) = 0 + 0++ resonances f 0 (1370) and f 0(1500) were confirmed by a 3 × 3 K-matrix analysis.
Journal ArticleDOI
Observation of a new IG(JPC)=1−(0++) resonance at 1450 MeV
Claude Amsler,V. V. Anisovich,D. S. Armstrong,I. Augustin,C.A. Baker,B. M. Barnett,C.J. Batty,K. Beuchert,P. Birien,P. Blüm,R. Bossingham,K. Braune,J. Brose,D.V. Bugg,Mark J. Burchell,T. Case,S. U. Chung,A. Cooper,Kenneth M. Crowe,T. Degener,H. P. Dietz,S. von Dombrowski,Michael Doser,W. Dünnweber,D. Engelhardt,M. Englert,M. A. Faessler,C. Felix,R. Hackmann,R. P. Haddock,F. H. Heinsius,M. Herz,Nigel Hessey,Pàl Hidas,P. Illinger,D. Jamnik,H. Kalinowsky,B. Kämmle,T. Kiel,J. Kisiel,Eberhard Klempt,Michael Kobel,Herbert Koch,C. Kolo,K. Königsman,Marcel Kunze,R. Landua,F. Loser,J. Lüdemann,H. Matthäy,M. Merkel,J. P. Merlo,C. A. Meyer,L. Montanet,A. Noble,F. Ould-Saada,K. Peters,C. N. Pinder,G. Pinter,S. Ravndal,J. Salk,A. V. Sarantsev,E. Schäfer,P. Schmidt,S. Spanier,C. Straβburger,U. Strohbusch,M. Suffert,D. Urner,C. Völcker,F. Walter,D. Walther,U. Wiedner,N. Winter,J. Zoll,B. S. Zou,Č. Zupančič +76 more
TL;DR: A new IG=1−JPC=0++πη resonance was observed in pp annihilation at rest into π0π0η as discussed by the authors, which has a mass M=(1450±40)