A Remeasurement of the Panofsky Ratio

Spuller, J.; Berghofer, D.; Hasinoff, M.D.; Macdonald, R.; Measday, David F.; Salomon, M.; Suzuki, T.; Poutissou, J.M.; Poutissou, R.; Lee, J.K.P.

doi:10.1016/0370-2693(77)90449-X

A Remeasurement of the Panofsky Ratio

J. Spuller
(
- British Columbia U.
)
,
D. Berghofer
(
- British Columbia U.
)
,
M.D. Hasinoff
(
- British Columbia U.
)
,
R. Macdonald
(
- British Columbia U.
)
,
David F. Measday
(
- British Columbia U.
)

1977

4 pages

Published in:

Phys.Lett.B 67 (1977) 479-482

Published: 1977

DOI:

10.1016/0370-2693(77)90449-X

View in:

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Abstract: (Elsevier)

By stopping π − in a liquid hydrogen target, we have measured the Panofsky ratio to be P =1.546±0.009. The measurement was carried out by using a large 46 cm φ × 51 cm NaI crystal to detect the high energy photons from the π − p→ π o n and π − p→ γ n reactions. Our value of the Panofsky ratio represents a factor of two increase in precision over the previous best value of P =1.533 ±0.021.

PI- P: INTERACTION
INTERACTION: PI- P
PI-: ABSORPTION
ABSORPTION: PI-
HYDROGEN
PHOTON: EMISSION
EMISSION: PHOTON
DIFFERENTIAL CROSS SECTION: PANOFSKY RATIO
COUNTERS AND DETECTORS: EXPERIMENTAL RESULTS
EXPERIMENTAL RESULTS: COUNTERS AND DETECTORS