First measurement of the Λ→nγ branching ratio | Zendy

S.F. Biagi | Zendy; M. Bourquin | Zendy; R. M. Brown | Zendy; H. Burckhart | Zendy; Ch. Doré | Zendy; P. Extermann | Zendy; M. Gailloud | Zendy; C. N. P. Gee | Zendy; W. M. Gibson | Zendy; R. J. Gray | Zendy; P. Jacot-Guillarmod | Zendy; P.W. Jeffreys | Zendy; W. C. Louis | Zendy; Th. Modis | Zendy; P. Mühlemann | Zendy; R. C. Owen | Zendy; J. Perrier | Zendy; Ken Ragan | Zendy; Ph. Rosselet | Zendy; B.J. Saunders | Zendy; P. Schirato | Zendy; H.W. Siebert | Zendy; V. J. Smith | Zendy; K. -P. Streit | Zendy; J.J. Thresher | Zendy; R. Weill | Zendy; A. T. Wood | Zendy; C. Yanagisawa | Zendy

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First measurement of the Λ→nγ branching ratio

Author(s) -

S.F. Biagi,

M. Bourquin,

R. M. Brown,

H. Burckhart,

Ch. Doré,

P. Extermann,

M. Gailloud,

C. N. P. Gee,

W. M. Gibson,

R. J. Gray,

P. Jacot-Guillarmod,

P.W. Jeffreys,

W. C. Louis,

Th. Modis,

P. Mühlemann,

R. C. Owen,

J. Perrier,

Ken Ragan,

Ph. Rosselet,

B.J. Saunders,

P. Schirato,

H.W. Siebert,

V. J. Smith,

K. -P. Streit,

J.J. Thresher,

R. Weill,

A. T. Wood,

C. Yanagisawa

Publication year - 1986

Publication title -

zeitschrift für physik c

Language(s) - English

Resource type - Journals

eISSN - 1431-5858

pISSN - 0170-9739

DOI - 10.1007/bf01575427

Subject(s) - physics , nuclear physics , large hadron collider , branching fraction , photon , neutron , branching (polymer chemistry) , hadron , momentum (technical analysis) , materials science , optics , composite material , finance , economics

In an experiment performed at the CERN-SPS charged hyperon beam, we have observed the radiative decay Λ→nγ, using well identified Λ from the decays of Ο− of 116 GeV/c momentum. Neutrons and photons from the Λ decays were observed in liquid argon and lead glass detectors. From a sample of 31 candidates, containing an estimated background of 7.3 events, the decay branching ratio was measured to be Γ(Λ→nγ)/Γ(Λ→all)=(1.02±0.33)×10−3.

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