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Title: Measurement of the differential cross section at 3, 4, 5, 6 GeV/c for the reactions π -p→ K°Λ° and π -p→ K°Σ° and of Λ° polarization at 5GeV/c

Abstract

Thesis. Submitted to Chicago Univ., Ill. Dept. of Physics. The differential cross section in the reaction π -p→ K°Λ°, π -p→ K°Σ° was measured at incident beam momenta of 3, 4 and 6 GeV/c and at momentum transfers to t approximates - 2.0. The polarization of Λ° was also measured at 5 GeV/c using the parity violating decay Λ° → pπ -. Wire spark chambers with magnetostrictive readout, scintillators, and Cerenkov counters were used and most of the calculations were performed on-line with an EMR6050 computer. Due to the experimental method the results have much smaller error than previous bubble chamber measurements.

Authors:
 [1]
+ Show Author Affiliations
  1. Univ. of Chicago, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
US Atomic Energy Commission (AEC)
OSTI Identifier:
4306583
Report Number(s):
ANL/HEP-7364
NSA Number:
NSA-29-025244
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis. Submitted to Chicago Univ., Ill. Dept of Physics. Orig. Receipt Date: 30-JUN-74
Country of Publication:
United States
Language:
English
Subject:
N64140* -Physics (High Energy)-Particle Interactions & Properties (Experimental)-Strong (Meson-induced); 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; *LAMBDA PARTICLES- POLARIZATION; *PION-PROTON INTERACTIONS- DIFFERENTIAL CROSS SECTIONS; DIFFRACTION MODELS; ENERGY DEPENDENCE; GEV RANGE 01- 10; ISOSPIN; KAONS NEUTRAL; LINEAR MOMENTUM; P INVARIANCE; PARTICLE PRODUCTION; PIONS MINUS; PROTONS; SIGMA NEUTRAL

Citation Formats

Lesnik, Abraham. Measurement of the differential cross section at 3, 4, 5, 6 GeV/c for the reactions π-p→ K°Λ° and π-p→ K°Σ° and of Λ° polarization at 5GeV/c. United States: N. p., 1973. Web. doi:10.2172/4306583.
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Lesnik, Abraham. Measurement of the differential cross section at 3, 4, 5, 6 GeV/c for the reactions π-p→ K°Λ° and π-p→ K°Σ° and of Λ° polarization at 5GeV/c. United States. doi:10.2172/4306583.
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Lesnik, Abraham. Sat . "Measurement of the differential cross section at 3, 4, 5, 6 GeV/c for the reactions π-p→ K°Λ° and π-p→ K°Σ° and of Λ° polarization at 5GeV/c". United States. doi:10.2172/4306583. https://www.osti.gov/servlets/purl/4306583.
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@article{osti_4306583,
title = {Measurement of the differential cross section at 3, 4, 5, 6 GeV/c for the reactions π-p→ K°Λ° and π-p→ K°Σ° and of Λ° polarization at 5GeV/c},
author = {Lesnik, Abraham},
abstractNote = {Thesis. Submitted to Chicago Univ., Ill. Dept. of Physics. The differential cross section in the reaction π-p→ K°Λ°, π-p→ K°Σ° was measured at incident beam momenta of 3, 4 and 6 GeV/c and at momentum transfers to t approximates - 2.0. The polarization of Λ° was also measured at 5 GeV/c using the parity violating decay Λ° → pπ-. Wire spark chambers with magnetostrictive readout, scintillators, and Cerenkov counters were used and most of the calculations were performed on-line with an EMR6050 computer. Due to the experimental method the results have much smaller error than previous bubble chamber measurements.},
doi = {10.2172/4306583},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Dec 01 00:00:00 EST 1973},
month = {Sat Dec 01 00:00:00 EST 1973}
}
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Thesis/Dissertation:
View Thesis/Dissertation (2.25 MB)
DOI:  10.2172/4306583
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  • ; ; ; ...
    We have measured the differential cross sections for the associated production reactions π -p → K°Λ°and π -p → K°Σ° at 3, 4, 5 and 6 GeV/c, with a total of over 40, 000 events.

  • We present a pole-extrapolation measurement of the K -π - elastic scattering cross section for two intervals in K -π - invariant mass from threshold to 0.84 GeV.

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  • The results of a measurement of the π -p → π 0n and π -p → η n differential cross sections at six pion beam momenta from 20 to 200 GeV/c are presented. The data for these cross sections were collected at the Fermi National Accelerator Laboratory in Batavia, Illinois. A 73.5 x 73.5 cm lead--scintillator hodoscope was used to detect the two photons from the decay of the π 0 and the eta; all other reactions were eliminated by detection of their charged particles and additional photons in an array of veto counters. The zero-degree charge exchange cross sectionsmore » determined from these measurements are shown to be consistent with the measured π +p and π -p total cross section differences. Effective Regge trajectories for the rho and the A$sub 2$ also extracted from the data.« less