T. Nakaya
Osaka University
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Featured researches published by T. Nakaya.
Physics Letters B | 1994
E. Ramberg; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; R. Tschirhart; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; P. Krolak; G. Makoff; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; E. M. Collins; G. D. Gollin; T. Nakaya
Abstract We have measured the polarization of Λ and Λ hyperons produced by 800 GeV protons on a Be target at a fixed targeting angle of 4.8 mrad. Comparison with previous data at 400 GeV production energy and twice the targeting angle shows no significant energy dependence for the Λ polarization. This is in striking contrast to the energy dependence found for σ+ and Ξ− polarizations. We find no evidence for Λ polarization at 800 GeV.
Physical Review Letters | 1993
D. A. Harris; R. A. Briere; E. Cheu; G. Makoff; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; K. Arisaka; D. Roberts; W. Slater; M. Weaver; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya; T. Yamanaka
We report the results of a search for the decay [ital K][sub [ital L]][r arrow][pi][sup 0][ital e+][ital e[minus]] conducted by E799 at Fermilab. The largest contribution to this decay mode is expected to be [ital CP] violating. Observations of this decay could either confirm the standard model mechanisms for [ital CP] violation or point to physics beyond the standard model. No such events were seen in our search. The 90% confidence level upper limit is determined to be [ital B]([ital K][sub [ital L]][r arrow][pi][sup 0][ital e+][ital e[minus]])[lt]4.3[times]10[sup [minus]9].
Physics Letters B | 1994
P. Krolak; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; K. Arisaka; D. Roberts; W. Slater; M. Weaver; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya; T. Yamanaka
Abstract A FNAL E799 Collaboration has carried out a search for the lepton-family number violating decay π0 → μ±e∓ using π0s produced from KL → π0π0π0 decays in flight. No events were observed. Assuming that lepton-family number violation is charge independent, the 90% confidence level upper limit on 1 2 [ BR (π 0 → μ + e − ) + BR (π 0 → μ − e + )] was determined to be 8.6 × 10−9.
Physical Review Letters | 1995
M. B. Spencer; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; P. Krolak; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya
We report on a measurement of the decay
Physical Review Letters | 1994
T. Nakaya; T. Yamanaka; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; S. Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; P. Gu
K_Lrightarrowmu^+mu^-gamma
Physical Review D | 1994
D. Roberts; K. Arisaka; J. Kubic; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya; T. Yamanaka
from Fermilab experiment E799. We observe
Physical Review Letters | 1993
D. A. Harris; R. A. Briere; E. Cheu; G. Makoff; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; K. Arisaka; D. Roberts; W. Slater; M. Weaver; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; T. Nakaya; T. Yamanaka
207
Physical Review Letters | 1994
P. Gu; P. Haas; W. P. Hogan; S. K. Kim; J. N. Matthews; S. S. Myung; S. Schnetzer; G. B. Thomson; Y. Zou; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford
candidate signal events with an estimated background of
Physical Review Letters | 1996
P. Gu; P. Haas; W. P. Hogan; S. K. Kim; J. N. Matthews; S. S. Myung; S. Schnetzer; G. B. Thomson; Y. Zou; K. Arisaka; D. Roberts; W. Slater; M. B. Spencer; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; P. Krolak; K. S. McFarland; A. Roodman; B. Schwingenheuer; Sunil Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler
10.5 pm 4.0
Physical Review Letters | 1994
T. Nakaya; T. Yamanaka; K. Arisaka; D. Roberts; W. Slater; M. Weaver; R. A. Briere; E. Cheu; D. A. Harris; K. S. McFarland; A. Roodman; B. Schwingenheuer; S. V. Somalwar; Y. W. Wah; B. Winstein; R. Winston; A. R. Barker; E. C. Swallow; G. J. Bock; R. Coleman; M. Crisler; J. Enagonio; R. Ford; Y. B. Hsiung; D. A. Jensen; E. Ramberg; R. Tschirhart; E. M. Collins; G. D. Gollin; P. Gu
events and establish
