Hiromasa Ozaki | Researchain

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Featured researches published by Hiromasa Ozaki.

Physical Review Letters | 2006

Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e{sup +}e{sup -} Annihilation at Belle

R. Seidl; K. Hasuko; M. Grosse Perdekamp; A. Ogawa; K. Abe; Y. Hoshi; I. Adachi; J. Dragic; T. Gershon; M. Hazumi; A. Ishikawa; R. Itoh; Y. Iwasaki; N. Katayama; H. Kichimi; A. Limosani; I. Nakamura; M. Nakao; S. Nishida; Hiromasa Ozaki

The Collins effect connects transverse quark spin with a measurable azimuthal dependence in the yield of hadronic fragments around the quarks momentum vector. Using two different reconstruction methods, we find evidence of statistically significant azimuthal asymmetries for charged pion pairs in e(+)e(-) annihilation at a center-of-mass energy of 10.52 GeV, which can be attributed to a transverse polarization of the primordial quarks. The measurement was performed using a sample of 79 x 10(6) hadronic events collected with the Belle detector.

Physical Review D | 2006

Search for the decay B°γγ

S. Villa; A. Bay; L. Hinz; Ch. Jacoby; T. Schietinger; O. Schneider; J. Wicht; D. Zuercher; K. Abe; I. Adachi; Timothy Gershon; J. Haba; M. Hazumi; R. Itoh; Y. Iwasaki; H. Kichimi; I. Nakamura; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki

Physical Review Letters | 2009

Measurement of the Decay B{sub s}°D{sub s}{sup +} and Evidence for B{sub s}°D{sub s}{sup {+-}}K{sup {+-}} in e{sup +}e Annihilation at (s)10.87 GeV

R. Louvot; O. Schneider; A. Bay; K. Vervink; N. Zwahlen; J. Wicht; I. Adachi; J. Dalseno; J. Haba; M. Hazumi; R. Itoh; Norihiro Katayama; H. Kichimi; P. Krokovny; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; K. Sumisawa

Physical Review D | 2009

Search for the X(1812) in B{sup {+-}}K{sup {+-}}

Chuanlei Liu; Z. P. Zhang; I. Adachi; J. Dalseno; J. Haba; M. Hazumi; R. Itoh; Y. Iwasaki; Norihiro Katayama; P. Krokovny; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; M. Tanaka; S. Uehara; S. Uno; M. Yamauchi; H. Aihara

Physical Review D | 2009

Measurements of charmless hadronic bs penguin decays in the {sup +}K{sup +} final state and first observation of B°°K{sup +}

S.-H. Kyeong; Y. Kwon; I.-S. Cho; J. H. Kang; I. Adachi; J. Dalseno; J. Haba; T. Hara; R. Itoh; Norihiro Katayama; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; K. Sumisawa; K. Trabelsi; S. Uehara; H. Aihara; Masahiko Iwasaki

Physical Review Letters | 2008

Measurement of B(D{sub s}{sup +}{sup +}{sub })

L. Widhalm; F. Mandl; W. Mitaroff; I. Adachi; J. Brodzicka; J. Haba; M. Hazumi; R. Itoh; Y. Iwasaki; Norihiro Katayama; H. Kichimi; P. Krokovny; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai; S. Suzuki; F. Takasaki; M. Tanaka; K. Trabelsi

Physical Review Letters | 2008

Observation of BppK* with a Large K* Polarization

Jinghuan Chen; Michael Zhuo Wang; Y. Chao; K.-F. Chen; W.-S. Hou; Y. B. Hsiung; J. G. Shiu; K. Ueno; C.-H. Wang; I. Adachi; J. Haba; M. Hazumi; R. Itoh; Norihiro Katayama; H. Kichimi; P. Krokovny; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai

Physical Review Letters | 2008

Observation of B{sub s} and Search for B{sub s} Decays at Belle

J. Wicht; A. Bay; O. Schneider; K. Vervink; S. Villa; N. Zwahlen; I. Adachi; J. Haba; M. Hazumi; R. Itoh; Y. Iwasaki; H. Kichimi; M. Nakao; Shin'ya Nishida; T. Nozaki; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; K. Sumisawa; F. Takasaki

Physical Review D | 2008

Improved search for D-D mixing using semileptonic decays at Belle

U. Bitenc; S. Fratina; Rok Pestotnik; M. Starič; A. Zupanc; I. Adachi; J. Brodzicka; J. Haba; M. Hazumi; R. Itoh; Norihiro Katayama; H. Kichimi; P. Krokovny; M. Nakao; Shin'ya Nishida; T. Nozaki; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; F. Takasaki

Physical Review Letters | 2007

Measurement of D-D Mixing Parameters in DK{sub s}{sup +} Decays

L. M. Zhang; Z. P. Zhang; I. Adachi; J. Brodzicka; J. Haba; M. Hazumi; R. Itoh; Y. Iwasaki; H. Kichimi; P. Krokovny; I. Nakamura; M. Nakao; Shin'ya Nishida; Hiromasa Ozaki; Y. Sakai; Jan Schuemann; K. Sumisawa; O. Tajima; F. Takasaki; K. Tamai

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