J
J. Spengler
Researcher at Max Planck Society
Publications - 114
Citations - 2173
J. Spengler is an academic researcher from Max Planck Society. The author has contributed to research in topics: Electron–positron annihilation & Branching fraction. The author has an hindex of 27, co-authored 114 publications receiving 2095 citations.
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Journal ArticleDOI
A measurement of γγ→ϱ+ϱ−
H. Albrecht,P. Böckmann,R. Gläser,G. Harder,A. Krüger,A. Nippe,M. Reidenbach,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,F. Sefkow,J. Spengler,R. Wurth,A. Yagil,R. D. Appuhn,A. Drescher,C. Hast,D. Kamp,Hermann Kolanoski,A. Lindner,Rainer Mankel,U. Matthiesen,H. Scheck,G. Schweda,B. Spaan,A. Walther,D. Wegener,U. Volland,H. Wegener,W. Funk,J. C. Gabriel,J. Stiewe,S. Werner,C. E. K. Charlesworth,K. W. Edwards,William R. Frisken,H. Kapitza,Robert K. Kutschke,D. B. Macfarlane,K. W. McLean,A. W. Nilsson,R. S. Orr,J. A. Parsons,P. M. Patel,J. D. Prentice,Sally Seidel,J. D. Swain,G. Tsipolitis,T. S. Yoon,R. Ammar,S. Ball,D. Coppage,R. Davis,S. Kanekal,N. Kwak,T. Ruf,Stefan Schael,K. R. Schubert,K. Strahl,R. Waldi,B. Boštjančič,G. Kernel,P. Križan,E. Križnič,M. Pleško,H. I. Cronström,Leif J. Jönsson,Anton Babaev,Mikhail Danilov,B. Fominykh,A. Golutvin,I. V. Gorelov,V. Lubimov,A. Rostovtsev,A. Semenov,Sergey Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,R. C. Fernholz +84 more
TL;DR: In this paper, the ARGUS detector at the e+e− storage ring DORIS II at DESY was used to study the γγ→ϱ+ϱ−→π+π−π 0π0π0 reaction.
Journal ArticleDOI
Kinematic distributions and nuclear effects of J/psi production in 920 GeV fixed-target proton-nucleus collisions
I. Abt,M. Adams,M. Agari,H. Albrecht,Aleksandar Aleksandrov,Vasco Amaral,António Amorim,S. J. Aplin,V. Aushev,Y. Bagaturia,Vladislav Balagura,M. Bargiotti,O. Barsukova,J. Bastos,J. Batista,C. Bauer,Th. S. Bauer,A. Belkov,A. Belkov,I. Belotelov,A. Bertin,B. Bobchenko,M. Böcker,A. Bogatyrev,G. Bohm,M. Bräuer,M. Bruinsma,Marco Bruschi,Peter Buchholz,T. Buran,João Carvalho,P. Conde,C. Cruse,Mogens Dam,K. M. Danielsen,M. Danilov,S. De Castro,H. Deppe,X. Dong,H. B. Dreis,V. Egorytchev,K. Ehret,F. Eisele,Dmitry Emeliyanov,S. Essenov,Laura Fabbri,Pietro Faccioli,M. Feuerstack-Raible,J. Flammer,B. Fominykh,M. Funcke,Ll. Garrido,A. Gellrich,B. Giacobbe,J. Gläß,D. Goloubkov,Yu. A. Golubkov,A. Golutvin,Igor Golutvin,I. Gorbounov,Andrej Gorišek,O. Gouchtchine,D. C. Goulart,S. Gradl,W. Gradl,F. Grimaldi,J. Groth-Jensen,Y. Guilitsky,J.D. Hansen,Jose M Hernandez,Werner Hofmann,Marcus Hohlmann,T. Hott,Wouter Hulsbergen,U. Husemann,O. Igonkina,M. Ispiryan,T. Jagla,C. Jiang,H. Kapitza,S. Karabekyan,N.N. Karpenko,S. Keller,J. Kessler,F. Khasanov,Yu.T. Kiryushin,I. Kisel,E. B. Klinkby,K. T. Knöpfle,Hermann Kolanoski,Samo Korpar,Samo Korpar,C. B. Krauss,P. Kreuzer,P. Križan,P. Križan,D. Krücker,S. Kupper,T. Kvaratskheliia,A. Lanyov,Kwong Lau,B. Lewendel,Thomas Lohse,B. Lomonosov,Reinhard Männer,R. Mankel,S. Masciocchi,I. Massa,I. Matchikhilian,G. Medin,M. Medinnis,M. Mevius,A. Michetti,Yu.V. Mikhailov,R. Mizuk,R. Muresan,M. zur Nedden,M. Negodaev,M. Nörenberg,Sebastian Nowak,M. T. Nunez Pardo de Vera,M. Ouchrif,Farid Ould-Saada,C. Padilla,D. Peralta,R. Pernack,R. Pestotnik,B. Aa. Petersen,Maurizio Piccinini,M. A. Pleier,M. Poli,Vladimir Popov,D. Pose,D. Pose,S. Prystupa,Valery Pugatch,Y. Pylypchenko,J. Pyrlik,Kendall Reeves,D. Reßing,H. Rick,Imma Riu,Peter Robmann,I. Rostovtseva,V. Rybnikov,F. Sanchez,Antonio Sbrizzi,M. Schmelling,B. Schmidt,A. Schreiner,H. Schröder,U. Schwanke,A. J. Schwartz,A. S. Schwarz,B. Schwenninger,B. Schwingenheuer,F. Sciacca,Nicola Semprini-Cesari,S. Shuvalov,Laura Silva,L. Sozuer,S. Solunin,A. Somov,S. Somov,J. Spengler,R. Spighi,Alexander Spiridonov,A. Stanovnik,A. Stanovnik,M. Starič,C. Stegmann,H. S. Subramania,M. Symalla,I. Tikhomirov,Maksym Titov,I. Tsakov,U. Uwer,C. van Eldik,Y. Vassiliev,Mauro Villa,A. Vitale,I. Vukotic,H. Wahlberg,A. H. Walenta,M. Walter,J. J. Wang,D. Wegener,Ulrich Werthenbach,Helmut Wolters,R. Wurth,A. Wurz,S. Xella-Hansen,Yu. Zaitsev,Mikhail Zavertyaev,T. Zeuner,A. Zhelezov,Z. Zheng,R. Zimmermann,T. Živko,Antonio Zoccoli +199 more
TL;DR: In this paper, measurements of the kinematic distributions of J/ψ mesons produced in p-C, p-Ti and p-W collisions at the HERA-B experiment at the DESY laboratory are presented.
Journal ArticleDOI
Measurement of the Decay B0 ---> D*- Lepton+ Neutrino
H. Albrecht,A.A. Andam,U. Binder,P. Böckmann,R. Gläser,G. Harder,A. Nippe,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,R. Wurth,A. Yagil,J. P. Donker,A. Drescher,D. Kamp,Hermann Kolanoski,U. Matthiesen,H. Scheck,B. Spaan,J. Spengler,D. Wegener,J. C. Gabriel,T. Ruf,K. R. Schubert,J. Stiewe,K. Strahl,R. Waldi,K. W. Edwards,Wr Frisken,D. J. Gilkinson,Doug Gingrich,H. Kapitza,P. C. H. Kim,Robert K. Kutschke,D. B. MacFarlane,J. A. McKenna,K. W. McLean,A. W. Nilsson,R. S. Orr,P. Padley,J. A. Parsons,P. M. Patel,J. D. Prentice,H. Seywerd,J. D. Swain,Georgios Tsipolitis,T. S. Yoon,J. C. Yun,R. Ammar,D. Coppage,R. Davis,S. Kanekal,N. Kwak,B. Boštjančič,G. Kernel,M. Pleško,Leif J. Jönsson,Anton Babaev,M. Danilov,B. Fominykha,A. Golutvin,I. V. Gorelov,V. Lubimov,V. Matveev,V. Nagovitsin,V. Ryltsov,A. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,Y. Oku +75 more
TL;DR: Using the ARGUS detector at the e + e − storage ring DORIS II at DESY, this article investigated the decays B 0 → D ∗− e + v and B 0→D ∗ − μ + ν.
Journal ArticleDOI
Observation of charmless B meson decays
H. Albrecht,P. Böckmann,R. Gläser,G. Harder,A. Krüger,A. Nippe,M. Schäfer,W. Schmidt-Parzefall,H. Schröder,Holger Schulz,F. Sefkow,J. Spengler,R. Wurth,A. Yagil,R. D. Appuhn,A. Drescher,D. Kamp,Hermann Kolanoski,Rainer Mankel,U. Matthiesen,H. Scheck,G. Schweda,B. Spaan,A. Walther,D. Wegener,J. C. Gabriel,T. Ruf,S. Schael,K. R. Schubert,J. Stiewe,K. Strahl,Roland Waldi,S. Werner,K. W. Edwards,William R. Frisken,D. J. Gilkinson,Douglas Gingrich,H. Kapitza,Robert K. Kutschke,D. B. Macfarlane,K. W. McLean,A. W. Nilsson,R. S. Orr,J. A. Parsons,P. M. Patel,J. D. Prentice,Sally Seidel,J. D. Swain,G. Tsipolitis,T. S. Yoon,R. Ammar,S. Ball,D. Coppage,R. Davis,S. Kanekal,N. Kwak,B. Boštjančič,G. Kernel,P. Križan,E. Križnič,Leif J. Jönsson,Anton Babaev,M. Danilov,B. Fominykh,A. Golutvin,I. V. Gorelov,V. Lubimov,V. Matveev,A. Semenov,S. Semenov,V. Shevchenko,V. Soloshenko,V. Tchistilin,I. Tichomirov,Yu. Zaitsev,R. Childers,C. W. Darden,R. C. Fernholz +77 more
TL;DR: In this paper, it was shown that the charmless decays of B mesons into the final states ppπ± and ppπ+π− are not the result of penguin-type processes.
Journal ArticleDOI
Analysis of charmonium production at fixed-target experiments in the NRQCD approach
Fabio Maltoni,J. Spengler,M. Bargiotti,A. Bertin,Marco Bruschi,S. De Castro,Laura Fabbri,Pietro Faccioli,B. Giacobbe,F. Grimaldi,I. Massa,Maurizio Piccinini,Nicola Semprini-Cesari,R. Spighi,Mauro Villa,A. Vitale,Antonio Zoccoli +16 more
TL;DR: In this paper, an analysis of the existing data on charmonium hadro-production based on non-relativistic QCD (NRQCD) calculations at the next-to-leading order (NLO) is presented.