Claude Amsler

Claude Amsler was born in 1947 in Solothurn, Switzerland. He went to school in the nearby city of Biel-Bienne and obtained his Baccalaureate in Sciences at the Gymnase Francais. He studied experimental physics at the Swiss Federal Institute of Technology (ETH) in Zurich. He obtained his Ph.D. degree in 1975 with the first experiment performed in particle physics at the Paul Scherrer Institute (PSI), a measurement of pion scattering on polarized protons. In 1976 he joined Queen Mary College in London as a Research Associate and was delegated to TRIUMF in Vancouver to work on nucleon-nucleon scattering experiments. In 1978 he moved to Brookhaven National Laboratory on Long Island as a Research Assistent Professor from the University of New Mexico to work on antiproton experiments. In 1979 he returned to Europe as a CERN Fellow. After a brief leave at the University of Munich he joined in 1982 the Physics Institute of the University of Zurich, where he performed his habilitation. He was elected in 1987 as an Associate, then as a Full Professor in experimental physics, in 1999. So far he has supervised 15 Ph.D. theses at the Faculty of Sciences. Claude Amsler has been associated to CERN since 1980. He contributed to several projects, such as light meson spectroscopy in proton-antiproton annihilation with ASTERIX and CRYSTAL BARREL, production of antihydrogen with ATHENA, and a measurement of the neutrino magnetic moment at a nearby nuclear power plant. He is currently a Member of the CMS collaboration at the LHC, of the DIRAC II collaboration to study Kpi-atoms, and has plans for a liquid argon dark matter experiment. Between 1996 and 2003 he was coordinating high energy physics in Switzerland. He is presently a member of the Swiss National Research Council and represents his country in NuPECC. He is also a member of the Particle Data Group.

Biography Updated on 13 November 2007

Articles in Scholarly Journals [Incomplete List]

  1. Production of slow protonium in vacuum
    Hyperfine Interactions, vol. 172, no. 1-3, pp. 97–105, 2007
  2. Protonium production in ATHENA
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 261, no. 1-2, pp. 40–43, 2007
  3. Study of KK¯ resonances in p¯p?K+K-p0 at 900 and 1640 MeV/c
    Physics Letters B, vol. 639, no. 3-4, pp. 165–171, 2006
  4. Extraction of electric field in heavily irradiated silicon pixel sensors
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 560, no. 1, pp. 112–117, 2006
  5. Progress with cold antihydrogen
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 247, no. 1, pp. 133–137, 2006
  6. Search for Laser-Induced Formation of Antihydrogen Atoms
    Physical Review Letters, vol. 97, no. 21, 2006
  7. Evidence For The Production Of Slow Antiprotonic Hydrogen In Vacuum
    Physical Review Letters, vol. 97, no. 15, 2006
  8. Spatial Distribution of Cold Antihydrogen Formation
    Physical Review Letters, vol. 94, no. 3, 2005
  9. Final results on the neutrino magnetic moment from the MUNU experiment
    Physics Letters B, 2005
  10. A measurement of the Lorentz angle in silicon strip sensors at cryogenic temperature
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 540, no. 1, pp. 113–120, 2005
  11. Production and detection of cold antihydrogen atoms
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 518, no. 1-2, pp. 244–248, 2004
  12. Antihydrogen production temperature dependence
    Physics Letters B, vol. 583, no. 1-2, pp. 59–67, 2004
  13. Temperature dependence of anti-hydrogen production in the ATHENA experiment
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 214, pp. 17–21, 2004
  14. Dynamics of antiproton cooling in a positron plasma during antihydrogen formation
    Physics Letters B, vol. 590, no. 3-4, pp. 133–142, 2004
  15. First production and detection of cold antihydrogen atoms
    Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, vol. 214, pp. 11–16, 2004
  16. Study of antiproton annihilation on neutrons into ????0
    Nuclear Physics A, vol. 740, no. 1-2, pp. 130–146, 2004
  17. Review of Particle Physics*1
    Physics Letters B, vol. 592, no. 1-4, pp. 1–5, 2004
  18. Real-time detector for plasma diagnostic in antimatter experiment
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 518, no. 1-2, pp. 249–251, 2004
  19. Tests of silicon sensors for the CMS pixel detector
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 530, no. 1-2, pp. 71–76, 2004
  20. Mesons beyond the naive quark model
    Physics Reports, vol. 389, no. 2, pp. 61–117, 2004
  21. The first cold antihydrogen
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 532, no. 1-2, pp. 229–236, 2004
  22. The ATHENA antihydrogen apparatus
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 518, no. 3, pp. 679–711, 2004
  23. High rate production of antihydrogen
    Physics Letters B, vol. 578, no. 1-2, pp. 23–32, 2004
  24. Production and decay of $\eta^{\prime}(958)$ and $\eta (1440)$ in $\bar p p$ annihilation at rest
    The European Physical Journal C - Particles and Fields, vol. 33, no. 1, pp. 23–30, 2004
  25. Detection of antihydrogen annihilations with a cryogenic pure-CsI crystal detector
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 504, no. 1-3, pp. 343–346, 2003
  26. Annihilation at rest of antiprotons and protons into neutral particles
    Nuclear Physics A, vol. 720, no. 3-4, pp. 357–367, 2003
  27. Limits on the neutrino magnetic moment from the MUNU experiment
    Physics Letters B, vol. 564, no. 3-4, pp. 190–198, 2003
  28. A high resolution silicon beam telescope
    Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, vol. 480, no. 2-3, pp. 501–507, 2002
  29. Production and detection of cold antihydrogen atoms
    Nature, vol. 419, no. 6906, Article ID nature01096, 3 pages, 2002
  30. Further evidence for a large glue component in the f0(1500) meson
    Physics Letters B, vol. 541, no. 1-2, pp. 22–28, 2002
  31. A new measurement of the ? elastic cross section at very low energy
    Physics Letters B, vol. 545, no. 1-2, pp. 57–61, 2002
  32. Proton-Antiproton annihilation at 900 MeV/ c into $\pi^0\pi^0\pi^0, \pi^0\pi^0\eta$ and $\pi^0\eta\eta$
    The European Physical Journal C - Particles and Fields, vol. 23, no. 1, pp. 29–41, 2002
  33. Review of Particle Properties
    Physical Review D, vol. 66, no. 1, 2002
  34. Comment on “Protonium annihilation into p^{0}p^{0} at rest in a liquid hydrogen target”
    Physical Review D, vol. 66, no. 5, 2002
  35. A high resolution search for the tensor glueball candidate ?(2230)
    Physics Letters B, vol. 520, no. 3-4, pp. 175–182, 2001
  36. 4 $\pi$ -decays of scalar and vector mesons
    The European Physical Journal C, vol. 21, no. 2, pp. 261–269, 2001
  37. Hyperfine Interactions, vol. 138, no. 1/4, pp. 153–158, 2001
  38. Branching ratios for ?p annihilation at rest into two-body final states
    Nuclear Physics A, vol. 679, no. 3-4, pp. 563–576, 2001
  39. $\bar{\rm p}{\rm p}$ -annihilation into $\omega\pi^0$ , $\omega\eta$ and $\omega\eta^\prime$ at 600, 1200 and 1940 MeV/ $c$
    The European Physical Journal C, vol. 12, no. 3, pp. 429–439, 2000
  40. Test of $\overline{\mbox N}$ N potential models: Isospin relations in $\overline{\mbox p}$ d annihilations at rest and the search for quasinuclear bound states
    The European Physical Journal C, vol. 17, no. 4, pp. 583–592, 2000
  41. Hadron Spectroscopy
    Nuclear Physics A, vol. 663-664, no. 1-2, pp. 93c–102c, 2000
  42. Observation of Pontecorvo reactions with open strangeness: ???K0 and ??S0K0
    Physics Letters B, vol. 469, no. 1-4, pp. 276–286, 1999
  43. Evidence for a p?-P-wave in ?-annihilations at rest into p0p0?
    Physics Letters B, vol. 446, no. 3-4, pp. 349–355, 1999
  44. ?-annihilation at rest into p+p-p-pspectator
    Physics Letters B, vol. 450, no. 1-3, pp. 275–280, 1999
  45. Observation of resonances in the reaction
    The European Physical Journal C, vol. 8, no. 1, p. 67, 1999
  46. Antiproton-proton annihilation at rest into K+K-p0
    Physics Letters B, vol. 468, no. 1-2, pp. 178–188, 1999
  47. The ?-mass, width and line shape in ? annihilation at rest into p+p-p0
    Physics Letters B, vol. 469, no. 1-4, pp. 270–275, 1999
  48. Momentum dependence of the decay ?
    Physics Letters B, vol. 417, no. 1-2, pp. 197–201, 1998
  49. Decay dynamics of the process ?
    Physics Letters B, vol. 417, no. 1-2, pp. 193–196, 1998
  50. Exotic ? state in ? annihilation at rest into ? ?
    Physics Letters B, vol. 423, no. 1-2, pp. 175–184, 1998
  51. Proton-antiproton annihilation and meson spectroscopy with the Crystal Barrel
    Reviews of Modern Physics, vol. 70, no. 4, pp. 1293–1339, 1998
  52. p¯p annihilation at rest into KLK±p±
    Physical Review D, vol. 57, no. 7, pp. 3860–3872, 1998
  53. Measurement of the ? ? ?? decay branching ratio
    Physics Letters B, vol. 411, no. 3-4, pp. 361–372, 1997
  54. ?-? interference in ?p-annihilation at rest into p+p-?
    Physics Letters B, vol. 411, no. 3-4, pp. 354–360, 1997
  55. Measurement of the decay distribution of ?' ? p+p-? and evidence for the box anomaly
    Physics Letters B, vol. 402, no. 1-2, pp. 195–206, 1997
  56. Study of the ? final state in annihilation at rest
    Physics Letters B, vol. 404, no. 1-2, pp. 179–186, 1997
  57. The MUNU experiment, general description
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 396, no. 1-2, pp. 115–129, 1997
  58. Antiproton-proton annihilation at rest into KLoK±p±po - manifestations of isospin interference
    Physics Letters B, vol. 415, no. 3, pp. 289–298, 1997
  59. Antiproton-proton annihilation at rest into KLKSp0p0
    Physics Letters B, vol. 415, no. 3, pp. 280–288, 1997
  60. High-mass ?-meson states from ?d-annihilation at rest into p-p0p0pspectator
    Physics Letters B, vol. 391, no. 1-2, pp. 191–196, 1997
  61. Observation of f0(1500) decay into KLKL
    Physics Letters B, vol. 385, no. 1-4, pp. 425–432, 1996
  62. A study of f0(1500) decays into 4p0 in ? at rest
    Physics Letters B, vol. 380, no. 3-4, pp. 453–460, 1996
  63. Evidence for two isospin zero $J^{PC}=2^{-+}$ mesons at 1645 and 1875 MeV
    Zeitschrift f�r Physik C Particles and Fields, vol. 71, no. 2, pp. 227–238, 1996
  64. Search for a new light gauge boson in $\pi^0$ , $\eta$ and $\eta^\prime$ decays
    Zeitschrift f�r Physik C Particles and Fields, vol. 70, no. 2, pp. 219–226, 1996
  65. Is f_{0}(1500) a scalar glueball?
    Physical Review D, vol. 53, no. 1, pp. 295–311, 1996
  66. First observations of Pontecorvo reactions with a recoiling neutron
    Zeitschrift für Physik A Hadrons and Nuclei, vol. 351, no. 3, pp. 325–331, 1995
  67. Observation of radiative ? annihilation into a F meson
    Physics Letters B, vol. 346, no. 3-4, pp. 363–370, 1995
  68. High statistics study of ƒ0(1500)s decay into ??
    Physics Letters B, vol. 353, no. 4, pp. 571–577, 1995
  69. Coupled channel analysis of ?p annihilation into p0p0p0, p0?? and p0p0?
    Physics Letters B, vol. 355, no. 1-2, pp. 425–432, 1995
  70. ?-decays into three pions
    Physics Letters B, vol. 346, no. 1-2, pp. 203–207, 1995
  71. First observation of the production of nucleon resonances in antiproton annihilation in liquid deuterium
    Physics Letters B, vol. 352, no. 1-2, pp. 187–192, 1995
  72. Evidence for a scalar glueball
    Physics Letters B, vol. 353, no. 2-3, pp. 385–390, 1995
  73. E decays to $eta;$pi;$pi; in annihilation at rest
    Physics Letters B, vol. 358, no. 3-4, pp. 389–398, 1995
  74. High-statistics study of f0(1500) decay into $pi;0$pi;0
    Physics Letters B, vol. 342, no. 1-4, pp. 433–439, 1995
  75. Search for a new light gauge boson in decays of p0 and ?
    Physics Letters B, vol. 333, no. 1-2, pp. 271–276, 1994
  76. ??' threshold enhancement in pp annihilations into p0??' at rest
    Physics Letters B, vol. 340, no. 4, pp. 259–263, 1994
  77. Observation of a new IG(JPC)=1-(0++) resonance at 1450 MeV
    Physics Letters B, vol. 333, no. 1-2, pp. 277–282, 1994
  78. Study of ? annihilation at rest into ??p0
    Physics Letters B, vol. 327, no. 3-4, pp. 425–432, 1994
  79. $$N\bar N$$ annihilation at rest into five pions
    Zeitschrift f�r Physik C Particles and Fields, vol. 59, no. 3, pp. 387–398, 1993
  80. Antiproton-proton annihilation at rest into two-body final states
    Zeitschrift für Physik C Particles and Fields, vol. 58, no. 2, pp. 175–189, 1993
  81. Protonium annihilation into KL0KL0p0 and KL0KS0?
    Physics Letters B, vol. 319, no. 1-3, pp. 373–380, 1993
  82. Radiative protonium annihilation into ??, ?p0, ??, ?? and ??'
    Physics Letters B, vol. 311, no. 1-4, pp. 371–378, 1993
  83. Antiproton-proton annihilation at rest into ?p0p0
    Physics Letters B, vol. 311, no. 1-4, pp. 362–370, 1993
  84. The pseudoscalar mixing angle TPS from ? and ?' production in ? annihiltion at rest
    Physics Letters B, vol. 294, no. 3-4, pp. 451–456, 1992
  85. P- versus S-wave ? at rest in LH2
    Physics Letters B, vol. 297, no. 1-2, pp. 214–218, 1992
  86. Proton-antiproton annihilation into ??p-observation of a scalar resonance decaying into ??
    Physics Letters B, vol. 291, no. 3, pp. 347–354, 1992
  87. f production in ? annihilation at rest
    Physics Letters B, vol. 267, no. 2, pp. 299–308, 1991
  88. Observation of a 2+ + resonance at 1515 MeV in proton-antiproton annihilations into 3p0
    Physics Letters B, vol. 260, no. 1-2, pp. 249–258, 1991
  89. Antiproton-proton annihilation at rest in H2 gas into p+ p- p0
    Zeitschrift für Physik C Particles and Fields, vol. 46, no. 2, pp. 203–213, 1990
  90. Antiproton-proton annihilation at rest in H2 gas into p+ p- p0
    Zeitschrift für Physik C Particles and Fields, vol. 46, no. 2, pp. 191–202, 1990
  91. Antiproton-proton annihilation at rest intop + p - ? ' andp + p - ? from atomicS andP states
    Zeitschrift für Physik C Particles and Fields, vol. 47, no. 3, pp. 353–365, 1990
  92. The ASTERIX spectrometer at LEAR
    Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 286, no. 1-2, pp. 76–98, 1990
  93. Polarized-target asymmetry in pion-proton bremsstrahlung at 298 MeV
    Physical Review Letters, vol. 64, no. 22, pp. 2619–2622, 1990
  94. Observation and analysis ofE mesons in $$\bar p$$ p annihilation at rest in H2 gas
    Zeitschrift für Physik C Particles and Fields, vol. 45, no. 2, pp. 223–234, 1989