W
W. Wander
Researcher at University of Erlangen-Nuremberg
Publications - 10
Citations - 841
W. Wander is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: HERMES experiment & Deep inelastic scattering. The author has an hindex of 9, co-authored 10 publications receiving 817 citations.
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Journal ArticleDOI
The HERMES Spectrometer
K. Ackerstaff,A. Airapetian,N. Akopov,M. Amarian,V. Andreev,E.C. Aschenauer,R. Avakian,H. Avakian,A. Avetissian,B. Bains,S. Barrow,W. Beckhusen,M. Beckmann,St. Belostotski,E. Belz,Th. Benisch,S. Bernreuther,N. Bianchi,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,B. Braun,B. Braun,B. Bray,S. Brons,W. Brückner,A. Brull,H. J. Bulten,G.P. Capitani,P. Carter,P. Chumney,E. Cisbani,S. Clark,S. Colilli,H. Coombes,G.R. Court,P. P. J. Delheij,E. Devitsin,C. W. de Jager,E. De Sanctis,D. De Schepper,D. De Schepper,P.K.A. de Witt Huberts,P. Di Nezza,M. Doets,M. Düren,A. Dvoredsky,G. Elbakian,Joseph Emerson,Joseph Emerson,A. Fantoni,A. Fechtchenko,M. Ferstl,D. Fick,K. Fiedler,B. W. Filippone,H. Fischer,H. T. Fortune,J. Franz,S. Frullani,M.-A. Funk,N.D. Gagunashvili,P. Galumian,Haiyan Gao,Y. Gärber,F. Garibaldi,G. Gavrilov,P. Geiger,V. Gharibyan,V. Giordjian,F. Giuliani,A. Golendoukhin,B. Grabowski,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,G. Greeniaus,G. Greeniaus,M. Gricia,C. Grosshauser,A. Gute,J. P. Haas,K. Hakelberg,W. Haeberli,J. O. Hansen,D. Hasch,O. Häusser,O. Häusser,Robert Henderson,Th. Henkes,Ralf Hertenberger,Y. Holler,R. J. Holt,H. Ihssen,A. Izotov,M. Iodice,H. E. Jackson,A. Jgoun,C. E. Jones,Ralf Kaiser,Ralf Kaiser,J. Kelsey,E. R. Kinney,M. Kirsch,A. Kisselev,P. Kitching,Hiroaki Kobayashi,E. Kok,K. Königsmann,M. Kolstein,H. Kolster,Wolfgang Korsch,S. Kozlov,V. Kozlov,R.S. Kowalczyk,Laird Kramer,B. Krause,A. Krivchitch,V. G. Krivokhijine,M. Kueckes,P. Kutt,G. S. Kyle,W. Lachnit,R. R. Langstaff,Wolfgang Lorenzon,M. Lucentini,A. Lung,Naomi C R Makins,Victor Maleev,S. I. Manaenkov,K. Martens,A.O. Mateos,K. McIlhany,R. D. McKeown,F. Meißner,F. Menden,D. Mercer,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,M. A. Miller,Richard G. Milner,Valeri Valentinovitch Mitsyn,G. Modrak,J.M. Morton,R. Mozzetti,V. Muccifora,A. Nagaitsev,Y. Naryshkin,Alan M. Nathan,F. Neunreither,M. Niczyporuk,W.-D. Nowak,M. Nupieri,P. Oelwein,H. Ogami,Thomas O'Neill,R. Openshaw,V. Papavassiliou,S. F. Pate,S. F. Pate,S. Patrichev,Michael Pitt,H.J. Plett,H. R. Poolman,S. Potashov,D. H. Potterveld,Bogdan Povh,V. Prahl,G. Rakness,V. Razmyslovich,R. P. Redwine,A. R. Reolon,R. A. Ristinen,Klaus Rith,H.O. Roloff,G. Röper,P. Rossi,S. Rudnitsky,H Russo,Dirk Ryckbosch,Yasuhiro Sakemi,F. Santavenere,I.A. Savin,F. Schmidt,H. Schmitt,G. Schnell,K. P. Schüler,A. Schwind,T. A. Shibata,T. Shin,B. Siebels,A. Simon,A. Simon,K. Sinram,W.R. Smythe,J. Sowinski,M. Spengos,K. Sperber,E. Steffens,J. Stenger,J. Stewart,F. Stock,F. Stock,U. Stößlein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,D.M. Thiessen,D.M. Thiessen,B. Tipton,V. Trofimov,A. Trudel,Michael Tytgat,G. M. Urciuoli,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,J. van Hunen,D. van Westrum,A. Vassiliev,Michel Vetterli,Michel Vetterli,Manuella Vincter,E. Volk,W. Wander,T. P. Welch,S. E. Williamson,T. Wise,G. Wöbke,K. Woller,S. Yoneyama,K. Zapfe-Düren,T. Zeuli,H. Zohrabian +239 more
TL;DR: The HERMES experiment as mentioned in this paper collects data on inclusive and semi-inclusive deep inelastic scattering of polarised positrons from polarised targets of H, D, and 3 He.
Journal ArticleDOI
Measurement of the neutron spin structure function gn1 with a polarized 3He internal target
K. Ackerstaff,A. Airapetian,Igor Akushevich,N. Akopov,M. Amarian,E.C. Aschenauer,R. Avakian,H. Avakian,A. Avetissian,B. Bains,S. Barrow,M. Beckmann,S. Belostotski,J.E. Belz,Th. Benisch,S. Bernreuther,N. Bianchi,Sean Blanchard,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,B. Braun,B. Bray,W. Brückner,A. Brull,E. E. W. Bruins,H. J. Bulten,G.P. Capitani,P. Carter,E. Cisbani,G.R. Court,P.P.J. Delheij,E. Devitsin,C. W. de Jager,E. De Sanctis,D. De Schepper,P.K.A. de Witt Huberts,M. Düren,A. Dvoredsky,G. Elbakian,Joseph Emerson,A. Fantoni,A. Fechtchenko,M. Ferstl,D. Fick,K. Fiedler,B. W. Filippone,H. Fischer,H. T. Fortune,J. Franz,S. Frullani,M.-A. Funk,N.D. Gagunashvili,P. Galumian,Haiyan Gao,Y. Gärber,F. Garibaldi,P. Geiger,V. Gharibyan,A. Golendoukhin,G. Graw,O. Grebeniouk,P.W. Green,L. G. Greeniaus,C. Grosshauser,A. Gute,V. Gyurjyan,J. P. Haas,W. Haeberli,J. O. Hansen,D. Hasch,O. Häusser,R.S. Henderson,Th. Henkes,Ralf Hertenberger,Y. Holler,R.J. Holt,H. Ihssen,M. Iodice,A. Izotov,H. E. Jackson,A. Jgoun,C. E. Jones,Ralf Kaiser,E. R. Kinney,M. Kirsch,A. Kisselev,P. Kitching,N. Koch,K. Königsmann,M. Kolstein,H. Kolster,Wolfgang Korsch,V. Kozlov,Laird Kramer,B. Krause,V. G. Krivokhijine,M. Kückes,G. S. Kyle,W. Lachnit,Wolfgang Lorenzon,A. Lung,Naomi C R Makins,S. I. Manaenkov,F. K. Martens,J. W. Martin,A.O. Mateos,K. McIlhany,R. D. McKeown,F. Meissner,D. Mercer,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,M. A. Miller,Ross Milner,Valeri Valentinovitch Mitsyn,R. Mozzetti,V. Muccifora,A. Nagaitsev,Y. Naryshkin,Alan M. Nathan,F. Neunreither,M. Niczyporuk,W.-D. Nowak,M. Nupieri,P. Oelwein,H. Ogami,Thomas O'Neill,R. Openshaw,V. Papavassiliou,S. F. Pate,Michael Pitt,S. Potashov,D. H. Potterveld,Bogdan Povh,G. Rakness,R.P. Redwine,A. R. Reolon,R. Ristinen,Klaus Rith,G. Röper,H. Roloff,P. Rossi,S. Rudnitsky,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,I.A. Savin,K.P. Schüller,A. Schwind,T. A. Shibata,T. Shin,A. Simon,K. Sinram,W.R. Smythe,J. Sowinski,M. Spengos,E. Steffens,J. Stenger,J. Stewart,F. Stock,U. Stoesslein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,D.M. Thiessen,B. Tipton,A. Trudel,Michael Tytgat,G. M. Urciuoli,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,Michel Vetterli,E. Volk,W. Wander,T. P. Welch,S. E. Williamson,T. Wise,T. Wölfel,K. Zapfe-Düren,H. Zohrabian,R. Zurmühle +186 more
TL;DR: In this paper, the HERMES experiment at HERA was used for a measurement of the neutron spin structure function g1n(x, Q2) in deep inelastic scattering using 27.5 GeV longitudinally polarized positrons incident on a polarized 3He internal gas target.
Journal ArticleDOI
Measurement of the spin asymmetry in the photoproduction of pairs of high-pT hadrons at HERMES
A. Airapetian,N. Akopov,M. Amarian,E. C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,B. Bains,C. Baumgarten,M. Beckmann,S. Belostotski,J. E. Belz,Th. Benisch,S. Bernreuther,Nicola Bianchi,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,S. Brauksiepe,B. Braun,W. Brückner,A. Brull,H. J. Bulten,G. P. Capitani,P. Carter,P. Chumney,E. Cisbani,G.R. Court,P. F. Dalpiaz,E. De Sanctis,D. De Schepper,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,Michael Düren,A. Dvoredsky,G. Elbakian,J. Ely,Alessandra Fantoni,M. Ferstl,K. Fiedler,B. W. Filippone,H. Fischer,B. D. Fox,J. Franz,S. Frullani,M.-A. Funk,Y. Gärber,F. Garibaldi,G. Gavrilov,P. Geiger,V. Gharibyan,A. Golendukhin,G. Graw,O. Grebeniouk,P.W. Green,L. G. Greeniaus,C. Grosshauser,M. Guidal,A. Gute,W. Haeberli,J.-O. Hansen,D. Hasch,O. Häusser,F.H. Heinsius,R. C. W. Henderson,M. Henoch,Ralf Hertenberger,Y. Holler,R. J. Holt,W. Hoprich,H. Ihssen,Mauro Iodice,A. Izotov,H. E. Jackson,A. Jgoun,Ralf Kaiser,E. R. Kinney,A. Kisselev,P. Kitching,Hiroaki Kobayashi,N. Koch,K. Königsmann,M. Kolstein,H. Kolster,V. A. Korotkov,Wolfgang Korsch,V. A. Kozlov,L. H. Kramer,M. Kurisuno,G. S. Kyle,W. Lachnit,Wolfgang Lorenzon,Naomi C R Makins,F. K. Martens,J. W. Martin,F. Masoli,A.O. Mateos,M. McAndrew,K. McIlhany,R. D. McKeown,F. Meissner,F. Menden,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,M. A. Miller,Ross Milner,Valeria Muccifora,Y. Naryshkin,Alan M. Nathan,F. Neunreither,M. Niczyporuk,W.-D. Nowak,Thomas O'Neill,R. Openshaw,Jinsong Ouyang,B. R. Owen,S. F. Pate,S. Potashov,D. H. Potterveld,Gregory Rakness,R. P. Redwine,A. R. Reolon,R. A. Ristinen,Klaus Rith,P. Rossi,S. Rudnitsky,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,C. Scarlett,Andreas Schäfer,F. Schmidt,Hans von der Schmitt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,T. A. Shibata,K. Shibatani,T. Shin,Vitaly Shutov,C. Simani,Aliz Simon,K. Sinram,P. Slavich,M. Spengos,E. Steffens,J. Stenger,J. Stewart,U. Stoesslein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,B. Tipton,Michael Tytgat,G. M. Uriuoli,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,J. van Hunen,Michel Vetterli,V. Vikhrov,Manuella Vincter,J. Visser,E. Volk,W. Wander,J. Wendland,Shawn Williamson,T. Wise,K. Woller,S. Yoneyama,H. Zohrabian +176 more
TL;DR: In this paper, the longitudinal spin asymmetry of pairs of hadrons with high transverse momentum pT was measured in photoproduction of two hadrons, and the measured asymmetry is A_(||) = -0.28±0.12(stat)± 0.02(syst).
Journal ArticleDOI
The first achievement of longitudinal spin polarization in a high energy electron storage ring
D. P. Barber,M. Böge,H.-D. Bremer,R. Brinkmann,W. Brückner,M. Düren,E. Gianfelice-Wendt,C. Großhauser,H. Kaiser,Robert Klanner,M. Lomperski,G. Meyer,N. Meyners,P. Oelwein,G. Ripken,Klaus Rith,G. Schmidt,E. Steffens,W. Wander,W. Wümpelmann,K. Zapfe,F. Zetsche +21 more
TL;DR: A pair of spin rotators has been installed in the electron ring of HERA and up to 65% of the spin polarizations have been reached reproducibly during dedicated measurement time.
Journal ArticleDOI
Determination of the deep inelastic contribution to the generalised Gerasimov-Drell-Hearn integral for the proton and neutron.
K. Ackerstaff,A. Airapetian,N. Akopov,Igor Akushevich,M. Amarian,E.C. Aschenauer,H. Avakian,R.O. Avakian,A. Avetissian,B. Bains,S. Barrow,C. Baumgarten,M. Beckmann,S. Belostotski,J. E. Belz,J. E. Belz,Th. Benisch,S. Bernreuther,Nicola Bianchi,Sean Blanchard,J. Blouw,H. Böttcher,A. Borissov,Jeffrey Brack,S. Brauksiepe,B. Braun,B. Braun,B. Bray,S. Brons,W. Brückner,A. Brull,E. E. W. Bruins,H. J. Bulten,H. J. Bulten,R. V. Cadman,G. P. Capitani,P. Carter,P. Chumney,E. Cisbani,G.R. Court,P. F. Dal Piaz,P.P.J. Delheij,E. De Sanctis,D. De Schepper,E. Devitsin,P.K.A. de Witt Huberts,P. Di Nezza,M. Düren,A. Dvoredsky,G. Elbakian,J. Ely,Joseph Emerson,Joseph Emerson,Alessandra Fantoni,A. Fechtchenko,M. Ferstl,D. Fick,K. Fiedler,B. W. Filippone,H. Fischer,H. T. Fortune,B. D. Fox,S. Frabetti,J. Franz,S. Frullani,M.-A. Funk,N.D. Gagunashvili,P. Galumian,Haiyan Gao,Haiyan Gao,Y. Gärber,F. Garibaldi,G. Gavrilov,P. Geiger,V. Gharibyan,V. Gyurjyan,A. Golendoukhin,G. Graw,O. Grebeniouk,P.W. Green,P.W. Green,L. G. Greeniaus,L. G. Greeniaus,C. Grosshauser,M. Guidal,A. Gute,J. P. Haas,W. Haeberli,J. O. Hansen,D. Hasch,O. Häusser,O. Häusser,O. Häusser,F.H. Heinsius,Robert Henderson,Th. Henkes,M. Henoch,Ralf Hertenberger,Y. Holler,R. J. Holt,W. Hoprich,H. Ihssen,M. Iodice,A. Izotov,H. E. Jackson,A. Jgoun,C. E. Jones,Ralf Kaiser,Ralf Kaiser,E. R. Kinney,M. Kirsch,A. Kisselev,P. Kitching,Hiroaki Kobayashi,N. Koch,K. Königsmann,M. Kolstein,H. Kolster,V. Korotkov,Wolfgang Korsch,V. A. Kozlov,Laird Kramer,Laird Kramer,B. Krause,V. G. Krivokhijine,M. Kückes,F. Kümmell,G. S. Kyle,W. Lachnit,Wolfgang Lorenzon,Wolfgang Lorenzon,A. Lung,Naomi C R Makins,Naomi C R Makins,S. I. Manaenkov,F. K. Martens,J. W. Martin,F. Masoli,A.O. Mateos,M. McAndrew,K. McIlhany,R. D. McKeown,F. Meissner,F. Menden,D. Mercer,A. Metz,N. Meyners,O. Mikloukho,C. A. Miller,C. A. Miller,M. A. Miller,Ross Milner,Valeri Valentinovitch Mitsyn,R. Mozzetti,Valeria Muccifora,A. Nagaitsev,Y. Naryshkin,Alan M. Nathan,F. Neunreither,M. Niczyporuk,W.-D. Nowak,M. Nupieri,P. Oelwein,H. Ogami,Thomas O'Neill,R. Openshaw,Jinsong Ouyang,B. R. Owen,V. Papavassiliou,S. F. Pate,S. F. Pate,Michael Pitt,H. R. Poolman,S. Potashov,D. H. Potterveld,G. Rakness,A. Reali,R. P. Redwine,A. R. Reolon,R. Ristinen,Klaus Rith,H. Roloff,G. Röper,P. Rossi,S. Rudnitsky,M. Ruh,Dirk Ryckbosch,Yasuhiro Sakemi,I.A. Savin,C. Scarlett,F. Schmidt,H. Schmitt,G. Schnell,K. P. Schüler,A. Schwind,J. Seibert,T. A. Shibata,T. Shin,V. Shutov,M. C. Simani,A. Simon,A. Simon,K. Sinram,P. Slavich,W.R. Smythe,J. Sowinski,M. Spengos,E. Steffens,J. Stenger,J. Stewart,F. Stock,F. Stock,U. Stoesslein,M. Sutter,H. Tallini,S. Taroian,Adel Terkulov,D. M. Thiessen,E. Thomas,B. Tipton,A. Trudel,Michael Tytgat,G. M. Urciuoli,J. van Hunen,R. Van de Vyver,J. F. J. van den Brand,G. van der Steenhoven,Michel Vetterli,Michel Vetterli,Manuella Vincter,J. Visser,E. Volk,W. Wander,T. P. Welch,S. E. Williamson,T. Wise,K. Woller,S. Yoneyama,K. Zapfe-Düren,H. Zohrabian,R. Zurmühle +240 more
TL;DR: In this article, the virtual photon absorption cross section differences for the proton and neutron have been determined from measurements of polarised cross section asymmetries in deep inelastic scattering of 27.5 GeV and 0.8 GeV, respectively.