W
W. Meyer
Researcher at Ruhr University Bochum
Publications - 284
Citations - 10360
W. Meyer is an academic researcher from Ruhr University Bochum. The author has contributed to research in topics: Nucleon & Meson. The author has an hindex of 54, co-authored 278 publications receiving 9583 citations. Previous affiliations of W. Meyer include Argonne National Laboratory & University of Liverpool.
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Present status of polarized solid-state targets for experiments with real and virtual photons
TL;DR: In this paper, the current situation of the polarized solid-state targets for experiments with real and virtual photons is reviewed and the present situation in phototproduction and deuteron photodisintegration experiments at intermediate energies can be improved by the use of tagged photons and a frozen spin polarized target.
Journal ArticleDOI
Double J/ψ production in pion-nucleon scattering at COMPASS
G. D. Alexeev,M.G. Alexeev,A. Amoroso,V. Andrieux,V. Anosov,Kamil Augsten,W. Augustyniak,Carlos Azevedo,B. Badelek,M. Ball,J. Barth,R. Beck,Y. Bedfer,R. Bernhard,Martin Bodlak,Franco Bradamante,Andrea Bressan,V.E. Burtsev,W. C. Chang,C. Chatterjee,M. Chiosso,A.G. Chumakov,S. U. Chung,Andres Cicuttin,P.M.M. Correia,Maria Liz Crespo,Daniele D'ago,S. Dalla Torre,S.S. Dasgupta,I. Denisenko,O.Yu. Denisov,Sergey Donskov,Norihiro Doshita,Ch. Dreisbach,W. Dünnweber,R.R. Dusaev,David W. Ecker,A.V. Efremov,Dmytry Eremeev,P.D. Eversheim,Pietro Faccioli,M. A. Faessler,M. Finger,G. Fischer,K Flöthner,Werner Florian,C. Franco,F. Friedrich,V. V. Frolov,Luis Guillermo García Ordóñez,Fabrice Gautheron,O.P. Gavrichtchouk,S. Gerassimov,J. Giarra,Debbie Giordano,M. Gorzellik,A. Grasso,A. A. Gridin,Andreas De Groote,M. Grosse Perdekamp,B. Grube,M. Grüner,A. Guskov,D. von Harrach,Martin Hoffmann,S. Horikawa,N. D'hose,C.-Y. Hsieh,Stefan M. Huber,S. Ishimoto,A. Ivanov,T. Iwata,M. Jandek,V. Jary,R. Joosten,E. M. Kabuss,Florian M. Kaspar,A. Kerbizi,B. Ketzer,Ambia Khatun,G.V. Khaustov,Yu.A. Khokhlov,Frank Klein,J.H. Koivuniemi,V.N. Kolosov,K. Kondo Horikawa,I. Konorov,V.F. Konstantinov,A.M. Korzenev,Sergey Koshkarev,Aram Kotzinian,O.M. Kouznetsov,A.H. Koval,Z. Kral,F. Krinner,F. Kunne,K. Kurek,R.P. Kurjata,Antonin Kveton,K. Lavickova,S. Levorato,Y.-S. Lian,J. Lichtenstadt,P. J. Lin,R. Longo,Valery E. Lyubovitskij,A. Maggiora,A. Magnon,Naomi C R Makins,Nour Makke,Gerhard K. Mallot,A. Maltsev,S.A. Mamon,A. Martin,J. Marzec,Jan Matousek,T. Matsuda,G.E. Mattson,C. Menezes Pires,F. Metzger,M. K. Meyer,W. Meyer,Yu.V. Mikhailov,Mikhail Mikhasenko,E. Mitrofanov,Yoshiki Miyachi,Rosa Molina,A. Moretti,A. Nagaytsev,C. Naim,D. Neyret,J. Nový,W.-D. Nowak,G. Nukazuka,A.G. Olshevsky,M. Ostrick,D. Panzieri,Bakur Parsamyan,S. Paul,H. Pekeler,J. C. Peng,M. Pešek,D.V. Peshekhonov,M. Pešková,S. Platchkov,J. Pochodzalla,V.A. Polyakov,J. Pretz,M. Quaresma,C. Quintans,G. Reicherz,C. Riedl,T. Rudnicki,D.I. Ryabchikov,A. Rychter,A. Rymbekova,V.D. Samoylenko,A. Sandacz,Subir Sarkar,I.A. Savin,G. Sbrizzai,H. Schmieden,Alexandr Selyunin,K. K. Sharko,L. Sinha,M. Slunečka,D. Spülbeck,A. Srnka,Marcin Stolarski,O. Subrt,Marek Šulc,H. Suzuki,S. Tessaro,F. Tessarotto,A. Thiel,Jan Tomsa,F. Tosello,A. Townsend,Triloki Triloki,V. Tskhay,Bruno Valinoti,B.M. Veit,J.F.C.A. Veloso,Brian Ventura,M. Virius,Matthias Wagner,Stefan Wallner,K. Zaremba,Mikhail Zavertyaev,M. Zemko,E. Zemlyanichkina,M. Ziembicki +191 more
TL;DR: In this paper , the authors studied the production of double J/ψ mesons using COMPASS data collected with a 190 GeV/c π− beam scattering off NH3, Al and W targets.
he large COMPASS polarized solid ammonia target for Drell–Yan easurements with a pion beam
.. Andrieux,Asher Berlin,Norihiro Doshita,M. Finger,Fabrice Gautheron,.. Horikawa,S. Ishimoto,T. Iwata,Yu. Kisselev,J.H. Koivuniemi,K. Kondo,A. Magnon,K. Mallot,Jan Matousek,T. Matsuda,W. Meyer,Yoshiki Miyachi,G. Nukazuka,M. Pešek,.. Pires,C. Quintans,G. Reicherz,S. Runkel,A. Srnka,H. Suzuki +24 more
TL;DR: In this paper, the transverse spin structure of the proton has been studied using a negative pion beam and a solid ammonia target at CERN using the dynamic nuclear polarization (DNP) method.
Posted Content
Observation of a structure in the M$_{p\eta}$ invariant mass distribution near 1700 MeV in the $\mathbf{\gamma p \rightarrow p \pi^0 \eta} $ reaction
V. Metag,Mariana Nanova,Jens Hartmann,P. Mahlberg,F. Afzal,C. Bartels,D. E. Bayadilov,R. Beck,Matthew L. Becker,E. Blanke,K.-T. Brinkmann,S. Ciupka,V. Crede,M. Dieterle,H. Dutz,D. Elsner,Frank Frommberger,A. B. Gridnev,M. Gottschall,M. Grüner,Ch. Hammann,J. Hannappel,Wolfgang Hillert,J. Hoff,Ph. Hoffmeister,Ch. Honisch,T. C. Jude,H. Kalinowsky,F. Kalischewski,I. Keshelashvili,B. Ketzer,P. Klassen,Frank Klein,K. Koop,P. Kroenert,B. Krusche,Matthew Lang,I. V. Lopatin,Francesco Messi,W. Meyer,B. Mitlasóczky,Jörg H. Müller,J. Müllers,V. A. Nikonov,V. Novinsky,R. W. Novotny,D. Piontek,G. Reicherz,Lee J. Richter,T. Rostomyan,S. Runkel,B. Salisbury,A. V. Sarantsev,D. Schaab,Ch. Schmidt,H. Schmieden,J. Schultes,T. Seifen,V. Sokhoyan,C. Sowa,K. Spieker,N. Stausberg,A. Thiel,U. Thoma,T. Triffterer,M. Urban,G. Urff,H. van Pee,M. Wagner,D. Walther,Ch. Wendel,D. Werthmüller,U. Wiedner,Alastair J. Wilson,A. Winnebeck,Lilian Witthauer,Y. Wunderlich +76 more
TL;DR: In this paper, a triangular singularity was observed in the M$N ε invariant mass distribution at a mass of 1678 MeV and the cross section associated with this structure reached a maximum of approximately 100 nb around E$Gamma p \rightarrow p a_0 \ rightarrow p \pi^0 \eta$