%X We report evidence for the exclusive two-body charmless hadronic B meson decay B ->eta(')pi, and improved measurements of B ->eta K-'. The results are obtained from a data sample of 386x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure B(B+->eta(')pi(+))=[1.76(-0.62)(+0.67)(stat)(-0.14)(+0.15)(syst)]x10(-6) and B(B-0 ->eta(')pi(0))= [2.79(-0.96)(+1.02)(stat)(-0.34)(+0.25)(syst)]x10(-6). We also find the ratio of B(B+->eta K-'(+))/B(B-0 ->eta K-'(0))=1.17 +/- 0.08(stat)+/- 0.03(syst) and measure the direct CP asymmetries for the charged modes.
%K DECAYS, BELLE, QCD, PHYSICS, SEARCH, ETA'
%J PHYS REV LETT
%T Evidence for B ->eta(')pi and improved measurements for B ->eta ' K
%A J Schumann
%A CH Wang
%A K Abe
%A I Adachi
%A H Aihara
%A D Anipko
%A K Arinstein
%A Y Asano
%A T Aushev
%A AM Bakich
%A V Balagura
%A E Barberio
%A M Barbero
%A A Bay
%A I Bedny
%A U Bitenc
%A I Bizjak
%A S Blyth
%A A Bondar
%A A Bozek
%A M Bracko
%A TE Browder
%A MC Chang
%A P Chang
%A Y Chao
%A A Chen
%A WT Chen
%A BG Cheon
%A Y Choi
%A YK Choi
%A A Chuvikov
%A S Cole
%A J Dalseno
%A M Danilov
%A M Dash
%A J Dragic
%A A Drutskoy
%A S Eidelman
%A D Epifanov
%A S Fratina
%A N Gabyshev
%A T Gershon
%A A Go
%A G Gokhroo
%A B Golob
%A A Gorisek
%A HC Ha
%A J Haba
%A T Hara
%A NC Hastings
%A K Hayasaka
%A H Hayashii
%A M Hazumi
%A L Hinz
%A T Hokuue
%A Y Hoshi
%A S Hou
%A WS Hou
%A YB Hsiung
%A T Iijima
%A A Imoto
%A K Inami
%A A Ishikawa
%A R Itoh
%A M Iwasaki
%A Y Iwasaki
%A JH Kang
%A P Kapusta
%A N Katayama
%A H Kawai
%A T Kawasaki
%A HR Khan
%A H Kichimi
%A SK Kim
%A SM Kim
%A K Kinoshita
%A R Kulasiri
%A R Kumar
%A CC Kuo
%A A Kuzmin
%A YJ Kwon
%A JS Lange
%A J Lee
%A T Lesiak
%A A Limosani
%A D Liventsev
%A J MacNaughton
%A G Majumder
%A F Mandl
%A D Marlow
%A T Matsumoto
%A A Matyja
%A W Mitaroff
%A H Miyake
%A H Miyata
%A Y Miyazaki
%A R Mizuk
%A GR Moloney
%A T Mori
%A T Nagamine
%A I Nakamura
%A E Nakano
%A M Nakao
%A Z Natkaniec
%A S Nishida
%A O Nitoh
%A S Ogawa
%A T Ohshima
%A T Okabe
%A S Okuno
%A SL Olsen
%A H Ozaki
%A P Pakhlov
%A H Palka
%A CW Park
%A H Park
%A N Parslow
%A LS Peak
%A R Pestotnik
%A LE Piilonen
%A M Rozanska
%A Y Sakai
%A TR Sarangi
%A N Sato
%A T Schietinger
%A O Schneider
%A C Schwanda
%A R Seidl
%A K Senyo
%A ME Sevior
%A M Shapkin
%A H Shibuya
%A B Shwartz
%A V Sidorov
%A A Sokolov
%A A Somov
%A N Soni
%A R Stamen
%A S Stanic
%A M Staric
%A K Sumisawa
%A S Suzuki
%A F Takasaki
%A K Tamai
%A N Tamura
%A M Tanaka
%A GN Taylor
%A Y Teramoto
%A XC Tian
%A K Trabelsi
%A T Tsuboyama
%A T Tsukamoto
%A S Uehara
%A T Uglov
%A K Ueno
%A S Uno
%A P Urquijo
%A Y Usov
%A G Varner
%A KE Varvell
%A S Villa
%A CC Wang
%A MZ Wang
%A Y Watanabe
%A E Won
%A QL Xie
%A A Yamaguchi
%A Y Yamashita
%A M Yamauchi
%A J Ying
%A Y Yusa
%A CC Zhang
%A LM Zhang
%A ZP Zhang
%A V Zhilich
%A D Zurcher
%A Belle Collaboration
%N 6
%I AMERICAN PHYSICAL SOC
%L discovery1308515
%V 97
%O © 2006 The American Physical Society
%D 2006