W
Werner Hofmann
Researcher at Max Planck Society
Publications - 793
Citations - 56940
Werner Hofmann is an academic researcher from Max Planck Society. The author has contributed to research in topics: High Energy Stereoscopic System & HEGRA. The author has an hindex of 100, co-authored 777 publications receiving 51945 citations. Previous affiliations of Werner Hofmann include University of California, Berkeley & Heidelberg University.
Papers
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Journal ArticleDOI
Study of mass composition and energy spectrum of primary cosmic radiation by the imaging atmospheric Cherenkov technique
A. Plyasheshnikov,A. Plyasheshnikov,A. Konopelko,A. Konopelko,Felix Aharonian,M. Hemberger,Werner Hofmann,Heinrich J. Völk +7 more
TL;DR: In this paper, atmospheric Cherenkov telescopes (IACTs) have been used for the separation of different components of cosmic rays in the energy region 1 −, and it is shown that simultaneous detection of air showers by two IACTs located at a distance of about 100 m from each other allows an effective separation of the proton, -particle, medium (O), heavy (Si), and very heavy (Fe) groups of cosmic-ray nuclei.
Journal ArticleDOI
Evidence of 100 TeV γ-ray emission from HESS J1702-420: A new PeVatron candidate
Hassan Abdalla,Felix Aharonian,Felix Aharonian,F. Ait Benkhali,E. O. Angüner,C. Arcaro,Celine Armand,Tom Armstrong,Halim Ashkar,Michael Backes,Michael Backes,V. Baghmanyan,V. Barbosa Martins,Anna Barnacka,Monica Barnard,Yvonne Becherini,D. Berge,Konrad Bernlöhr,B. Bi,Markus Böttcher,C. Boisson,J. Bolmont,M. de Bony de Lavergne,Mischa Breuhaus,Francois Brun,Pierre Brun,M. Bryan,M. Büchele,Tomasz Bulik,Thomas Bylund,Sami Caroff,A. Carosi,Sabrina Casanova,T. Chand,S. Chandra,A. W. Chen,Garret Cotter,M. Curyło,J. Damascene Mbarubucyeye,Isak Delberth Davids,Jim Davies,Christoph Deil,Justine Devin,L. Dirson,A. Djannati-Ataï,Anton Dmytriiev,Axel Donath,Victor Doroshenko,Lente Dreyer,Connor Duffy,J. Dyks,K. Egberts,F. Eichhorn,Sabrina Einecke,G. Emery,Jean-Pierre Ernenwein,Kirsty Feijen,S. J. Fegan,A. Fiasson,G. Fichet de Clairfontaine,Gilles Fontaine,Stefan Funk,M. Füßling,Stefano Gabici,Y. A. Gallant,Gianluca Giavitto,L. Giunti,D. Glawion,J. F. Glicenstein,M.-H. Grondin,Joachim Hahn,Maria Haupt,G. Hermann,Jim Hinton,Werner Hofmann,Clemens Hoischen,Tim Holch,Markus Holler,M. Hörbe,Dieter Horns,D. Huber,Marek Jamrozy,D. Jankowsky,Felix Jankowsky,Armelle Jardin-Blicq,V. Joshi,I. Jung-Richardt,E. Kasai,M. A. Kastendieck,Krzysztof Katarzynski,U. Katz,Dmitry Khangulyan,B. Khélifi,Stefan Klepser,Włodek Kluźniak,Nu. Komin,R. Konno,K. Kosack,Dmitriy Kostunin,Michael Kreter,G. Lamanna,Anne Lemiere,M. Lemoine-Goumard,J.-P. Lenain,Fabian Leuschner,C. Levy,Thomas Lohse,Iryna Lypova,Jonathan Mackey,Jhilik Majumdar,D. Malyshev,V. Marandon,Paolo Marchegiani,A. Marcowith,Arnaud Mares,G. Martí-Devesa,Ramin Marx,Ramin Marx,Gilles Maurin,P. J. Meintjes,Manuel Meyer,Alison Mitchell,Rafal Moderski,L. Mohrmann,Alessandro Montanari,C. Moore,P. Morris,E. Moulin,Jacques Muller,Thomas Murach,K. Nakashima,A. Nayerhoda,M. de Naurois,Hambeleleni Ndiyavala,Jacek Niemiec,L. Oakes,P. T. O'Brien,H. Odaka,Stefan Ohm,L. Olivera-Nieto,E. de Oña Wilhelmi,Michal Ostrowski,Sebastian Panny,M. Panter,R. D. Parsons,G. Peron,B. Peyaud,Q. Piel,S. Pita,V. Poireau,A. Priyana Noel,D. A. Prokhorov,H. Prokoph,G. Pühlhofer,Michael Punch,Andreas Quirrenbach,S. Raab,R. Rauth,P. Reichherzer,A. Reimer,Olaf Reimer,Q. Remy,M. Renaud,Frank M. Rieger,L. Rinchiuso,Carlo Romoli,Gavin Rowell,B. Rudak,E. Ruiz-Velasco,V. Sahakian,S. Sailer,Heiko Salzmann,David Sánchez,Andrea Santangelo,Misao Sasaki,M. Scalici,J. Schäfer,F. Schüssler,H. M. Schutte,Ullrich Schwanke,M. Seglar-Arroyo,Mohanraj Senniappan,A. S. Seyffert,N. Shafi,Jimmy N.S. Shapopi,Kleopas Shiningayamwe,Rachel Simoni,Atreyee Sinha,Helene Sol,Andreas Specovius,Samuel Timothy Spencer,Marion Spir-Jacob,Lukasz Stawarz,L. Sun,Riaan Steenkamp,Christian Stegmann,S. Steinmassl,Constantin Steppa,Tadayuki Takahashi,Thomas Tavernier,A.M. Taylor,Regis Terrier,J. H. E. Thiersen,Domenico Tiziani,M. Tluczykont,Lenka Tomankova,C. Trichard,M. Tsirou,R. J. Tuffs,Yasunobu Uchiyama,D. J. van der Walt,C. van Eldik,C. van Rensburg,B. van Soelen,G. Vasileiadis,Johannes Veh,Christo Venter,Pascal Vincent,Jacco Vink,Heinrich J. Völk,Zorawar Wadiasingh,Stefan Wagner,James E. M. Watson,Felix Werner,R. J. White,Alicja Wierzcholska,Yu Wun Wong,A. Yusafzai,M. Zacharias,Roberta Zanin,Davit Zargaryan,A. A. Zdziarski,A. Zech,Sylvia Zhu,J. Zorn,Samuel Zouari,Natalia Żywucka,Fabio Acero +237 more
TL;DR: In this article, the authors presented new observations of HESS J1702-420 made with the High Energy Stereoscopic System (H.E.S.), and processed using improved analysis techniques.
Journal ArticleDOI
The first measurement of the Michel parameter η in τ decays
H. Albrecht,Thomas Hamacher,R. P. Hofmann,T. Kirchhoff,R. Mankel,A. Nau,Sebastian Nowak,H. Schröder,Holger Schulz,M. Walter,R. Wurth,C. Hast,H. Kapitza,Hermann Kolanoski,A. Kosche,A. Lange,Axel Lindner,M. Schieber,T. Siegmund,B. Spaan,H. Thurn,D. Töpfer,D. Wegener,P. Eckstein,Klaus R. Schubert,R. Schwierz,R. Waldi,K. Reim,H. Wegener,R. Eckmann,H. Kuipers,O. Mai,R. Mundt,T. Oest,R. Reiner,W. Schmidt-Parzefall,J. Stiewe,S. Werner,K. Ehret,Werner Hofmann,A. Hüpper,K. T. Knöpfle,J. Spengler,P. Krieger,D. B. MacFarlane,J. D. Prentice,P. R.B. Saull,K. Tzamariudaki,R. G. Van de Water,T. S. Yoon,C. Frankl,D. Reßing,M. Schmidtler,Michael Schneider,S. Weseler,G. Kernel,P. Križan,E. Križnič,T. Podobnik,T. Živko,Vladislav Balagura,Ivan Belyaev,S. Chechelnitsky,Mikhail Danilov,A. Droutskoy,Yuri Gershtein,A. Golutvin,I. Korolko,G. Kostina,D. O. Litvintsev,V. Lubimov,P. Pakhlov,Sergey Semenov,A. Snizhko,I. Tichomirov,Yu. Zaitsev +75 more
TL;DR: In this article, a pseudo-rest-frame technique was used to obtain the first measurement of the Michel Parameter 7/in ~-decays with a precision comparable to the present world average.
Journal ArticleDOI
TeV γ-ray observations of the Crab and Mkn 501 during moonshine and twilight
D. Kranich,R. Mirzoyan,D. Petry,D. Petry,B. C. Raubenheimer,Felix Aharonian,A. G. Akhperjanian,Juan Abel Barrio,Juan Abel Barrio,C. Beck,Konrad Bernlöhr,H. Bojahr,Jose Luis Contreras,Juan Cortina,Juan Cortina,A. Daum,T. Deckers,S. Denninghoff,V. Fonseca,J. Gebauer,J. C. Gonzalez,G. Heinzelmann,M. Hemberger,G. Hermann,M. Hess,A. Heusler,Werner Hofmann,H. Hohl,Dieter Horns,A. Ibarra,R. Kankanyan,M. Kestel,O. Kirstein,C. Köhler,A. Konopelko,H. Kornmayer,Henric Krawczynski,Henric Krawczynski,H. Lampeitl,Axel Lindner,E. Lorenz,N. Magnussen,H. Meyer,Abelardo Moralejo,L. Padilla,M. Panter,R. Plaga,A. Plyasheshnikov,J. Prahl,G. Pühlhofer,G. Rauterberg,C. Renault,Wolfgang Rhode,A. Roehring,V. Sahakian,M. Samorski,D. Schmele,F. Schröder,W. Stamm,Heinrich J. Völk,B. Wiebel-Sooth,C. A. Wiedner,M. Willmer,H. Wirth,W. Wittek +64 more
TL;DR: In this article, the high voltage supply of the photomultipliers in fixed steps up to 13% was reduced for the HEGRA CT1 imaging Cerenkov telescope during periods when the moon was shining and during twilight.
Journal ArticleDOI
Investigation of the decays $\bar B^0$$\to D^{*+}$$\ell^- \bar v$ and $\bar B \to D^{**}$$\ell^-\bar v$
H. Albrecht,H. Ehrlichmann,Thomas Hamacher,R. P. Hofmann,T. Kirchhoff,A. Nau,Sebastian Nowak,H. Schröder,Holger Schulz,M. Walter,R. Wurth,R. D. Appuhn,C. Hast,Hermann Kolanoski,A. Lange,A. Lindner,Rainer Mankel,M. Schieber,T. Siegmund,B. Spaan,H. Thurn,D. Töpfer,A. Walther,D. Wegener,M. Bittner,P. Eckstein,Manfred Paulini,K. Reim,H. Wegener,R. Mundt,T. Oest,R. Reiner,W. Schmidt-Parzefall,W. Funk,J. Stiewe,S. Werner,K. Ehret,Werner Hofmann,A. Hüpper,S. Khan,K. T. Knöpfle,J. Spengler,Dave Britton,C. E. K. Charlesworth,K. W. Edwards,E.R.F. Hyatt,H. Kapitza,Peter Krieger,D. B. MacFarlane,P. M. Patel,J. D. Prentice,P. R. B. Saull,K. Tzamariudaki,R. G. Van de Water,T. S. Yoon,D. Reßing,M. Schmidtler,Michael Schneider,K. R. Schubert,K. Strahl,R. Waldi,S. Weseler,G. Kernel,P. Križan,E. Križnič,T. Podobnik,T. Živko,Vladislav Balagura,Ivan Belyaev,S. Chechelnitsky,Mikhail Danilov,A. Droutskoy,Yuri Gershtein,A. Golutvin,I. V. Gorelov,G. Kostina,V. Lubimov,P. Pakhlov,Fedor Ratnikov,Sergey Semenov,V. Shibaev,V. Soloshenko,I. Tichomirov,Yu. Zaitsev +83 more
TL;DR: In this paper, the ARGUS detector at the DORIS II storage ring has been used to study the decay rate of exclusive semileptonic B with a D * + meson in the final state.