H
H. Yamamoto
Researcher at University of Chicago
Publications - 16
Citations - 501
H. Yamamoto is an academic researcher from University of Chicago. The author has contributed to research in topics: Limit (mathematics) & Meson. The author has an hindex of 10, co-authored 16 publications receiving 491 citations. Previous affiliations of H. Yamamoto include University of Colorado Boulder.
Papers
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Journal ArticleDOI
Measurement of the CP-violation parameter Re( epsilon '/ epsilon ).
L. K. Gibbons,A. R. Barker,R. A. Briere,G. Makoff,V. Papadimitriou,J. R. Patterson,B. Schwingenheuer,Sunil Somalwar,Y. W. Wah,B. Winstein,Roland Winston,M. Woods,H. Yamamoto,E. C. Swallow,E. C. Swallow,G. J. Bock,R. Coleman,J. Enagonio,Y. B. Hsiung,E. J. Ramberg,K. Stanfield,R. Tschirhart,T. Yamanaka,George D Gollin,M. Karlsson,J. K. Okamitsu,P. Debu,B. Peyaud,R. Turlay,B. Vallage +29 more
TL;DR: In this paper, a measurement of the [ital CP]-violation parameter Re([var epsilon][prime]/[var Epsilon]) has been made using the full E731 data set.
Journal ArticleDOI
First result on a new measurement of epsilon '/ epsilon in the neutral-kaon system.
M. Woods,K. Nishikawa,J. R. Patterson,Y. W. Wah,B. Winstein,Roland Winston,H. Yamamoto,E. C. Swallow,E. C. Swallow,G. J. Bock,R. Coleman,Y. B. Hsiung,K. Stanfield,R. J. Stefanski,T. Yamanaka,George D Gollin,G. Grazer,J. K. Okamitsu,Patrick Jarry,R. Daudin,P. Debu,B. Peyaud,R. Turlay +22 more
TL;DR: A new beam line and detector were constructed to increase statistical precision and greatly reduce systematic uncertainty on the ratio of the CP-nonconserving parameters epsilon'/epsilon and a result from a first run shows the precision is better than earlier measurements yet the result is still consistent with the superweak mechanism.
Journal ArticleDOI
Determination of Re( epsilon '/ epsilon ) by the simultaneous detection of the four KL,S--> pi pi decay modes.
J. R. Patterson,A. R. Barker,R. A. Briere,L. K. Gibbons,G. Makoff,V. Papadimitriou,Sunil Somalwar,Y. W. Wah,B. Winstein,Roland Winston,M. Woods,H. Yamamoto,E. C. Swallow,E. C. Swallow,G. J. Bock,R. Coleman,J. Enagonio,Y. B. Hsiung,K. Stanfield,R. J. Stefanski,T. Yamanaka,G.A. Blair,George D Gollin,M. Karlsson,J. K. Okamitsu,R. Tschirhart,J. C. Brisson,P. Debu,B. Peyaud,R. Turlay,B. Vallage +30 more
Journal ArticleDOI
Simultaneous measurement of KS and KL decays into π+π-γ
E. Ramberg,G. J. Bock,R. Coleman,J. Enagonio,Y. B. Hsiung,K. Stanfield,R. Tschirhart,T. Yamanaka,A. R. Barker,R. A. Briere,L. K. Gibbons,G. Makoff,V. Papadimitriou,J. R. Patterson,Sunil Somalwar,Y. W. Wah,B. Winstein,Roland Winston,M. Woods,H. Yamamoto,E. C. Swallow,E. C. Swallow,G.A. Blair,George D Gollin,M. Karlsson,J. K. Okamitsu,P. Debu,B. Peyaud,R. Turlay,B. Vallage +29 more
TL;DR: The photon energy spectrum of the direct emission decay of the K L is consistent with the presence of a vector meson propagator in the form factor after removing the inner-bremsstrahlung contribution.
Journal ArticleDOI
New measurements of the neutral kaon parameters Δm, τs, Φ00-Φ+-, and Φ+-
L. K. Gibbons,A. R. Barker,R. A. Briere,G. Makoff,V. Papadimitriou,J. R. Patterson,B. Schwingenheuer,Sunil Somalwar,Y. W. Wah,B. Winstein,Roland Winston,M. Woods,H. Yamamoto,E. C. Swallow,E. C. Swallow,G. J. Bock,R. Coleman,J. Enagonio,Y. B. Hsiung,E. J. Ramberg,K. Stanfield,R. Tschirhart,T. Yamanaka,George D Gollin,M. Karlsson,J. K. Okamitsu,P. Debu,B. Peyaud,R. Turlay,B. Vallage +29 more
TL;DR: The full E731 data set is used to provide precise determinations of several parameters of the neutral kaon, including the K s lifetime τ s, the K L -K S mass difference Δm, and the phase difference between Φ 00 and Φ +- , ΔΦ=-1.6 o ±1.2 o .