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NSR database version of April 26, 2024.

Search: Author = A.Badertscher

Found 15 matches.

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2001SC40      Eur.Phys.J. C 21, 473 (2001)

H.-Ch.Schroder, A.Badertscher, P.F.A.Goudsmit, M.Janousch, H.J.Leisi, E.Matsinos, D.Sigg, Z.G.Zhao, D.Chatellard, J.-P.Egger, K.Gabathuler, P.Hauser, L.M.Simons, A.J.R.El Hassani

The Pion-Nucleon Scattering Lengths from Pionic Hydrogen and Deuterium

ATOMIC PHYSICS, Mesic-atoms ^1,2H(π^-, X), E at rest; measured X-ray spectra; deduced strong-interaction energy level shift, decay widths, pion-nucleon scattering length.

NUCLEAR REACTIONS ^1,2H(π^-, X), E at rest; measured X-ray spectra; deduced strong-interaction energy level shift, decay widths, pion-nucleon scattering length.

1999SC40      Phys.Lett. 469B, 25 (1999)

H.-Ch.Schroder, A.Badertscher, P.F.A.Goudsmit, M.Janousch, H.J.Leisi, E.Matsinos, D.Sigg, Z.G.Zhao, D.Chatellard, J.-P.Egger, E.Jeannet, K.Gabathuler, P.Hauser, L.M.Simons, A.J.R.El Hassani

Determination of the πN Scattering Lengths from Pionic Hydrogen

ATOMIC PHYSICS, Mesic-atoms ¹H; measured X-ray spectra; deduced pionic hydrogen level energy, width, πN scattering lengths.

doi: 10.1016/S0370-2693(99)01237-X
Citations: PlumX Metrics

1997BA18      Phys.Lett. 392B, 278 (1997)

A.Badertscher, M.Daum, R.Frosch, P.F.A.Goudsmit, W.Hajdas, M.Janousch, P.-R.Kettle, V.Markushin, J.Schottmuller, Z.G.Zhao

Experimental Determination of the Kinetic Energy Distribution of π^-p Atoms in Liquid Hydrogen

NUCLEAR REACTIONS ¹H(π^-, π⁰), E at 117 MeV/c; measured neutron tof spectra; deduced π^-p-atom kinetic energy distribution in liquid hydrogen.

ATOMIC PHYSICS ¹H(π^-, π⁰), E at 117 MeV/c; measured neutron tof spectra; deduced π^-p-atom kinetic energy distribution in liquid hydrogen.

doi: 10.1016/S0370-2693(96)01545-6
Citations: PlumX Metrics

1997CH44      Nucl.Phys. A625, 855 (1997)

D.Chatellard, J.-P.Egger, E.Jeannet, A.Badertscher, M.Bogdan, P.F.A.Goudsmit, M.Janousch, H.J.Leisi, E.Matsinos, H.-Ch.Schroder, D.Sigg, Z.G.Zhao, E.C.Aschenauer, K.Gabathuler, P.Hauser, L.M.Simons, A.J.R.El Hassani

X-Ray Spectroscopy of the Pionic Deuterium Atom

NUCLEAR REACTIONS ^1,2H(π^-, X), E at 85 MeV/c; measured X-ray spectra; deduced 1S-level strong interaction shift, width, pionic deuterium S-wave scattering length.

ATOMIC PHYSICS, Mesic-Atoms ^1,2H(π^-, X), E at 85 MeV/c; measured X-ray spectra; deduced 1S-level strong interaction shift, width, pionic deuterium S-wave scattering length.

doi: 10.1016/S0375-9474(97)00466-1
Citations: PlumX Metrics

1997JA13      Phys.Lett. 414B, 237 (1997)

M.Janousch, A.Badertscher, P.F.A.Goudsmit, H.J.Leisi, E.Matsinos, P.Weber, Z.G.Zhao

Destructive Interference of s and p Waves in 180° π^-p Elastic Scattering

NUCLEAR REACTIONS ¹H(π^-, π^-), E=43.6-72 MeV; measured σ(θ); deduced destructive interference.

doi: 10.1016/S0370-2693(97)01169-6
Citations: PlumX Metrics

1996SI21      Nucl.Phys. A609, 269 (1996); Erratum Nucl.Phys. A617, 526 (1997)

D.Sigg, A.Badertscher, M.Bogdan, P.F.A.Goudsmit, H.J.Leisi, H.-Ch.Schroder, Z.G.Zhao, D.Chatellard, J.-P.Egger, E.Jeannet, E.C.Aschenauer, K.Gabathuler, L.M.Simons, A.J.R.El Hassani

The Strong Interaction Shift and Width of the Ground State of Pionic Hydrogen

ATOMIC PHYSICS, Mesic-Atoms ¹H(π^-, X), E at rest; measured X-ray spectra; deduced strong interaction shift, width.

doi: 10.1016/S0375-9474(96)00280-1
Citations: PlumX Metrics

1996SI22      Nucl.Phys. A609, 310 (1996)

D.Sigg, A.Badertscher, P.F.A.Goudsmit, H.J.Leisi, G.C.Oades

Electromagnetic Corrections to the s-Wave Scattering Lengths in Pionic Hydrogen

NUCLEAR REACTIONS ¹H(π^-, π^-), E=low; calculated scattering length corrections; ¹H(π^-, π⁰), E=low; calculated σ(E), scattering length corrections. Relativistic two-channel approach.

doi: 10.1016/S0375-9474(96)00238-2
Citations: PlumX Metrics

1995BA19      Nucl.Phys. A585, 49c (1995)

A.Badertscher, E.C.Aschenauer, M.Bogdan, D.Chatellard, J.-P.Egger, P.F.A.Goudsmit, K.Gabathuler, P.Hauser, A.J.R.El Hassani, E.Jeannet, M.Janousch, H.J.Leisi, E.Matsinos, H.-Ch.Schroder, D.Sigg, L.M.Simons, Z.G.Zhao

Measurement of the Strong Interaction Shift and Width of the 1S State in Pionic Hydrogen

ATOMIC PHYSICS, Mesic-Atoms ¹H(π^-, X), E at rest; measured X-ray spectra; deduced 3P-1S transition energy, line shape.

NUCLEAR REACTIONS ¹H(π^-, X), E at rest; measured X-ray spectra; deduced 3P-1S transition energy, line shape.

doi: 10.1016/0375-9474(94)00542-U
Citations: PlumX Metrics

1995CH50      Phys.Rev.Lett. 74, 4157 (1995)

D.Chatellard, J.-P.Egger, E.Jeannet, A.Badertscher, M.Bogdan, P.F.A.Goudsmit, H.J.Leisi, E.Matsinos, H.-Ch.Schroder, D.Sigg, Z.G.Zhao, E.C.Aschenauer, K.Gabathuler, P.Hauser, L.M.Simons, A.J.R.El Hassani

Determination of the S-Wave Scattering Length in Pionic Deuterium with a High Resolution Crystal Spectrometer

NUCLEAR REACTIONS ²H(π^-, X), E at 85 MeV/c; measured X-ray spectra; deduced 1S level strong interaction shift, total decay width.

ATOMIC PHYSICS, Mesic-Atoms ²H(π^-, X), E at 85 MeV/c; measured X-ray spectra; deduced 1S level strong interaction shift, total decay width.

doi: 10.1103/PhysRevLett.74.4157
Citations: PlumX Metrics

1995SI25      Phys.Rev.Lett. 75, 3245 (1995)

D.Sigg, A.Badertscher, M.Bogdan, P.F.A.Goudsmit, H.J.Leisi, E.Matsinos, H.-Ch.Schroder, Z.G.Zhao, D.Chatellard, J.-P.Egger, E.Jeannet, E.C.Aschenauer, K.Gabathuler, L.M.Simons, A.J.R.El Hassani

Strong Interaction Shift and Width of the 1s Level in Pionic Hydrogen

NUCLEAR REACTIONS ¹H(π^-, X), E at rest; measured pionic X-rays; deduced strong interaction shift, width.

ATOMIC PHYSICS, Mesic-Atoms ¹H(π^-, X), E at rest; measured pionic X-rays; deduced strong interaction shift, width.

doi: 10.1103/PhysRevLett.75.3245
Citations: PlumX Metrics

1993BA75      Nucl.Instrum.Methods Phys.Res. A335, 470 (1993)

A.Badertscher, M.Bogdan, P.F.A.Goudsmit, L.Knecht, H.J.Leisi, H.Ch.Schroder, D.Sigg, Z.G.Zhao, D.Chatellard, J.-P.Egger, E.Jeannet, E.C.Aschenauer, K.Gabathuler, L.M.Simons, A.J.R.El-Hassani

A High Resolution Reflecting Crystal Spectrometer to Measure 3 keV Pionic Hydrogen and Deuterium X-Rays

NUCLEAR REACTIONS ⁹Be(π^-, X), E at rest; measured pionic X-ray spectra. High resolution crystal spectrometer.

ATOMIC PHYSICS, Mesic-Atoms ⁹Be(π^-, X), E at rest; measured pionic X-ray spectra. High resolution crystal spectrometer.

doi: 10.1016/0168-9002(93)91232-C
Citations: PlumX Metrics

1992HE10      Z.Phys. A342, 359 (1992)

K.Heitlinger, R.Bacher, A.Badertscher, P.Blum, J.Eades, J.Egger, K.Elsener, D.Gotta, E.Morenzoni, L.M.Simons

Precision Measurement of Antiprotonic Hydrogen and Deuterium X-Rays

ATOMIC PHYSICS ^1,2H(p-bar, X), E at 105 MeV/c; measured X-ray spectra; deduced Lyman α transition shift, width.

doi: 10.1007/BF01291519
Citations: PlumX Metrics

1982BA05      Nucl.Phys. A377, 406 (1982)

A.Badertscher, K.Borer, G.Czapek, A.Fluckiger, H.Hanni, B.Hahn, E.Hugentobler, A.Markees, T.Marti, U.Moser, E.Ramseyer, J.Schacher, H.Scheidiger, P.Schlatter, G.Viertel, W.Zeller

A Search for Muon-Electron and Muon-Positron Conversion in Sulfur

NUCLEAR REACTIONS ³²S(μ^-, e⁺), (μ^-, e^-), E at rest; measured electron, positron spectra; deduced no evidence for neutrinoless muon conversion.

doi: 10.1016/0375-9474(82)90049-5
Citations: PlumX Metrics

1981SC18      Nucl.Phys. A368, 438 (1981)

H.Scheidiger, A.Badertscher, K.Borer, G.Czapek, A.Fluckiger, H.Hanni, B.Hahn, E.Hugentobler, H.Kaspar, A.Markees, T.Marti, U.Moser, J.Schacher, P.Schlatter, G.Viertel, W.Zeller

Muon Decay in Sulphur

NUCLEAR REACTIONS ³²S(μ^-, e^-), E at rest; measured σ(E(e)); deduced weak vector, axial vector couplings, initial, final state Coulomb interaction effects.

doi: 10.1016/0375-9474(81)90766-1
Citations: PlumX Metrics

1978BA59      Phys.Lett. 79B, 371 (1978)

A.Badertscher, K.Borer, G.Czapek, A.Fluckiger, H.Hanni, B.Hahn, E.Hugentobler, H.Kaspar, A.Markees, U.Moser, R.P.Redwine, J.Schacher, H.Scheidiger, P.Schlatter, G.Viertel

Search for μ^- → e⁺ Conversion on Sulfur

NUCLEAR REACTIONS ³²S(μ^-, e⁺), E=at rest; measured Ee+; deduced upper limit for reaction process.

doi: 10.1016/0370-2693(78)90385-4
Citations: PlumX Metrics