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Andreas Dax
Researcher at Yale University
Publications - 27
Citations - 2557
Andreas Dax is an academic researcher from Yale University. The author has contributed to research in topics: Proton & Charge radius. The author has an hindex of 10, co-authored 19 publications receiving 2224 citations. Previous affiliations of Andreas Dax include Paul Scherrer Institute.
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Journal ArticleDOI
The size of the proton
Randolf Pohl,Aldo Antognini,François Nez,F. D. Amaro,F. Biraben,João Cardoso,D. S. Covita,D. S. Covita,Andreas Dax,Satish Dhawan,L.M.P. Fernandes,Adolf Giesen,Adolf Giesen,Thomas Graf,Theodor W. Hänsch,Paul Indelicato,Lucile Julien,Cheng-Yang Kao,Paul E. Knowles,Eric-Olivier Le Bigot,Yi-Wei Liu,J. A. M. Lopes,Livia Ludhova,C.M.B. Monteiro,Françoise Mulhauser,Françoise Mulhauser,Tobias Nebel,Paul Rabinowitz,Joaquim M. F. dos Santos,Lukas A. Schaller,Karsten Schuhmann,Catherine Schwob,David Taqqu,J.F.C.A. Veloso,Franz Kottmann +34 more
TL;DR: The root-mean-square charge radius, rp, has been determined with an accuracy of 2 per cent by electron–proton scattering experiments, and the present most accurate value of rp (with an uncertainty of 1 per cent) is given by the CODATA compilation of physical constants.
Journal ArticleDOI
Proton Structure from the Measurement of 2S-2P Transition Frequencies of Muonic Hydrogen
Aldo Antognini,Aldo Antognini,François Nez,Karsten Schuhmann,F. D. Amaro,François Biraben,João Cardoso,D. S. Covita,D. S. Covita,Andreas Dax,Satish Dhawan,Marc Diepold,L.M.P. Fernandes,Adolf Giesen,Andrea L. Gouvea,Thomas Graf,Theodor W. Hänsch,Theodor W. Hänsch,Paul Indelicato,Lucile Julien,Cheng-Yang Kao,Paul E. Knowles,Franz Kottmann,Eric-Olivier Le Bigot,Yi-Wei Liu,J. A. M. Lopes,Livia Ludhova,C.M.B. Monteiro,Françoise Mulhauser,Tobias Nebel,Paul Rabinowitz,Joaquim M. F. dos Santos,Lukas A. Schaller,Catherine Schwob,David Taqqu,J.F.C.A. Veloso,Jan Vogelsang,Randolf Pohl +37 more
TL;DR: Accurate knowledge of the charge and Zemach radii of the proton is essential, not only for understanding its structure but also as input for tests of bound-state quantum electrodynamics and its predictions for the energy levels of hydrogen.
Journal ArticleDOI
SwissFEL: The Swiss X-ray Free Electron Laser
Christopher J. Milne,Thomas Schietinger,M. Aiba,Arturo Alarcon,J. Alex,Alexander Anghel,Vladimir Arsov,Carl Beard,Paul Beaud,Simona Bettoni,M. Bopp,H. Brands,Manuel Brönnimann,Ingo Brunnenkant,Marco Calvi,A. Citterio,Paolo Craievich,Marta Csatari Divall,Mark Dällenbach,Michael D’Amico,Andreas Dax,Yunpei Deng,Alexander Dietrich,Roberto Dinapoli,Edwin Divall,Sladana Dordevic,Simon Ebner,Christian Erny,Hansrudolf Fitze,Uwe Flechsig,Rolf Follath,F. Frei,Florian Gärtner,Romain Ganter,Terence Garvey,Zheqiao Geng,I. Gorgisyan,C. Gough,A. Hauff,Christoph P. Hauri,Nicole Hiller,Tadej Humar,Stephan Hunziker,Gerhard Ingold,Rasmus Ischebeck,Markus Janousch,Pavle Juranić,M. Jurcevic,Maik Kaiser,Babak Kalantari,Roger Kalt,B. Keil,Christoph Kittel,Gregor Knopp,W. Koprek,Henrik T. Lemke,Thomas Lippuner,Daniel Llorente Sancho,Florian Löhl,C. Lopez-Cuenca,Fabian Märki,F. Marcellini,G. Marinkovic,Isabelle Martiel,Ralf Menzel,Aldo Mozzanica,Karol Nass,Gian Luca Orlandi,Cigdem Ozkan Loch,Ezequiel Panepucci,Martin Paraliev,Bruce D. Patterson,Bill Pedrini,Marco Pedrozzi,Patrick Pollet,Claude Pradervand,Eduard Prat,Peter Radi,Jean-Yves Raguin,S. Redford,Jens Rehanek,Julien Réhault,Sven Reiche,Matthias Ringele,J. Rittmann,Leonid Rivkin,Albert Romann,Marie Ruat,C. Ruder,Leonardo Sala,Lionel Schebacher,T. Schilcher,Volker Schlott,Thomas J. Schmidt,Bernd Schmitt,Xintian Shi,M. Stadler,L. Stingelin,Werner Sturzenegger,Jakub Szlachetko,D. Thattil,D. Treyer,A. Trisorio,Wolfgang Tron,S. Vetter,Carlo Vicario,Didier Voulot,Meitian Wang,Thierry Zamofing,Christof Zellweger,R. Zennaro,Elke Zimoch,Rafael Abela,Luc Patthey,Hans-Heinrich Braun +114 more
TL;DR: The SwissFEL X-ray Free Electron Laser (XFEL) facility as discussed by the authors started construction at the Paul Scherrer Institute (Villigen, Switzerland) in 2013 and will be ready to accept its first users in 2018 on the Aramis hard Xray branch.
Journal ArticleDOI
Laser spectroscopy of muonic deuterium
Randolf Pohl,François Nez,L.M.P. Fernandes,F. D. Amaro,F. Biraben,João Cardoso,D. S. Covita,Andreas Dax,Satish Dhawan,Marc Diepold,Adolf Giesen,Andrea L. Gouvea,Thomas Graf,Theodor W. Hänsch,Theodor W. Hänsch,Paul Indelicato,Lucile Julien,Paul E. Knowles,Franz Kottmann,Eric-Olivier Le Bigot,Yi-Wei Liu,J. A. M. Lopes,J. A. M. Lopes,Livia Ludhova,C.M.B. Monteiro,F. Mulhauser,F. Mulhauser,F. Mulhauser,Tobias Nebel,Paul Rabinowitz,Joaquim M. F. dos Santos,Lukas A. Schaller,Karsten Schuhmann,Karsten Schuhmann,Catherine Schwob,David Taqqu,J.F.C.A. Veloso,Aldo Antognini,Aldo Antognini,Aldo Antognini +39 more
TL;DR: The deuteron is too small, too The radius of the proton has remained a point of debate ever since the spectroscopy of muonic hydrogen indicated a large discrepancy from the previously accepted value.
Journal ArticleDOI
The size of the proton
Tobias Nebel,Aldo Antognini,F. D. Amaro,F. Biraben,João Cardoso,D. S. Covita,Andreas Dax,Satish Dhawan,L.M.P. Fernandes,Adolf Giesen,Thomas Graf,Theodor W. Hänsch,Theodor W. Hänsch,Paul Indelicato,Lucile Julien,Cheng-Yang Kao,Paul E. Knowles,Franz Kottmann,E.-O. Le Bigot,Yi-Wei Liu,J. A. M. Lopes,Livia Ludhova,C.M.B. Monteiro,Françoise Mulhauser,François Nez,Paul Rabinowitz,J.M.F. dos Santos,Lukas A. Schaller,Karsten Schuhmann,Catherine Schwob,David Taqqu,J.F.C.A. Veloso,Randolf Pohl +32 more
TL;DR: The root-mean-square (rms) charge radius of the proton has so far been known only with a surprisingly low precision of about 1% from both electron scattering and precision spectroscopy of hydrogen as mentioned in this paper.