Leptonic decays of the - And - hyperons

W. Tanenbaum; V. Hungerbhler; R. Majka; J. N. Marx; P. Némethy; J. Sandweiss; W. J. Willis; M. Atac; S. Ecklund; P. J. Gollon; J. Lach; J. MacLachlan; A. Roberts; R. Stefanski; D. Theriot; C. L. Wang

doi:10.1103/PhysRevD.12.1871

Leptonic decays of the - And - hyperons

W. Tanenbaum, V. Hungerbhler, R. Majka, J. N. Marx, P. Némethy, J. Sandweiss, W. J. Willis, M. Atac, S. Ecklund, P. J. Gollon, J. Lach, J. MacLachlan, A. Roberts, R. Stefanski, D. Theriot, C. L. Wang

Research output: Contribution to journal › Article › peer-review

Abstract

The decays - ne-», - e-» (-p), and e-» (-p) were studied using unpolarized hyperons from the Yale-Fermilab-BNL hyperon beam at the Brookhaven National Laboratory Alernating Gradient Synchrotron. The -, -, e-, and -decay-product momenta were measured by magnetic spectrometers with magnetostrictive wire spark chambers. A threshold Cerenkov counter and a total absorption calorimeter identified the electron and neutron, respectively. From a sample of 3507 reconstructed - ne-» events we have found gAgV=0.4350.035. From a sample of 55 reconstructed e-» events we have found gVgA=-0.170.35 assuming that the conserved vector current hypothesis correctly predicts the weak magnetic form factor. A new one-angle Cabibbo fit gives f=0.4360.010, d=0.8120.011, and,=0.2320.003 radian.

Original language	English (US)
Pages (from-to)	1871-1883
Number of pages	13
Journal	Physical Review D
Volume	12
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevD.12.1871
State	Published - 1975

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Physics and Astronomy (miscellaneous)

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@article{434434f763d44224abb38e872792ae66,

title = "Leptonic decays of the - And - hyperons",

abstract = "The decays - ne-», - e-» (-p), and e-» (-p) were studied using unpolarized hyperons from the Yale-Fermilab-BNL hyperon beam at the Brookhaven National Laboratory Alernating Gradient Synchrotron. The -, -, e-, and -decay-product momenta were measured by magnetic spectrometers with magnetostrictive wire spark chambers. A threshold Cerenkov counter and a total absorption calorimeter identified the electron and neutron, respectively. From a sample of 3507 reconstructed - ne-» events we have found gAgV=0.4350.035. From a sample of 55 reconstructed e-» events we have found gVgA=-0.170.35 assuming that the conserved vector current hypothesis correctly predicts the weak magnetic form factor. A new one-angle Cabibbo fit gives f=0.4360.010, d=0.8120.011, and,=0.2320.003 radian.",

author = "W. Tanenbaum and V. Hungerbhler and R. Majka and Marx, {J. N.} and P. N{\'e}methy and J. Sandweiss and Willis, {W. J.} and M. Atac and S. Ecklund and Gollon, {P. J.} and J. Lach and J. MacLachlan and A. Roberts and R. Stefanski and D. Theriot and Wang, {C. L.}",

note = "Funding Information: Operated by Universities Research Association, Inc. under contract with the U. S. Atomic Energy Commission. Funding Information: Research supported by the U. S. Atomic Energy Commission under Contract No. AT (11-1). ",

year = "1975",

doi = "10.1103/PhysRevD.12.1871",

language = "English (US)",

volume = "12",

pages = "1871--1883",

journal = "Physical review D: Particles and fields",

issn = "1550-7998",

publisher = "American Institute of Physics",

number = "7",

}

TY - JOUR

T1 - Leptonic decays of the - And - hyperons

AU - Tanenbaum, W.

AU - Hungerbhler, V.

AU - Majka, R.

AU - Marx, J. N.

AU - Némethy, P.

AU - Sandweiss, J.

AU - Willis, W. J.

AU - Atac, M.

AU - Ecklund, S.

AU - Gollon, P. J.

AU - Lach, J.

AU - MacLachlan, J.

AU - Roberts, A.

AU - Stefanski, R.

AU - Theriot, D.

AU - Wang, C. L.

N1 - Funding Information: Operated by Universities Research Association, Inc. under contract with the U. S. Atomic Energy Commission. Funding Information: Research supported by the U. S. Atomic Energy Commission under Contract No. AT (11-1).

PY - 1975

Y1 - 1975

N2 - The decays - ne-», - e-» (-p), and e-» (-p) were studied using unpolarized hyperons from the Yale-Fermilab-BNL hyperon beam at the Brookhaven National Laboratory Alernating Gradient Synchrotron. The -, -, e-, and -decay-product momenta were measured by magnetic spectrometers with magnetostrictive wire spark chambers. A threshold Cerenkov counter and a total absorption calorimeter identified the electron and neutron, respectively. From a sample of 3507 reconstructed - ne-» events we have found gAgV=0.4350.035. From a sample of 55 reconstructed e-» events we have found gVgA=-0.170.35 assuming that the conserved vector current hypothesis correctly predicts the weak magnetic form factor. A new one-angle Cabibbo fit gives f=0.4360.010, d=0.8120.011, and,=0.2320.003 radian.

AB - The decays - ne-», - e-» (-p), and e-» (-p) were studied using unpolarized hyperons from the Yale-Fermilab-BNL hyperon beam at the Brookhaven National Laboratory Alernating Gradient Synchrotron. The -, -, e-, and -decay-product momenta were measured by magnetic spectrometers with magnetostrictive wire spark chambers. A threshold Cerenkov counter and a total absorption calorimeter identified the electron and neutron, respectively. From a sample of 3507 reconstructed - ne-» events we have found gAgV=0.4350.035. From a sample of 55 reconstructed e-» events we have found gVgA=-0.170.35 assuming that the conserved vector current hypothesis correctly predicts the weak magnetic form factor. A new one-angle Cabibbo fit gives f=0.4360.010, d=0.8120.011, and,=0.2320.003 radian.

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U2 - 10.1103/PhysRevD.12.1871

DO - 10.1103/PhysRevD.12.1871

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SN - 1550-7998

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Leptonic decays of the - And - hyperons

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