Precision measurement of charged pion and kaon differential cross sections in electron-positron annihilation at Q = 10.52 GeV

Belle Collaboration: M. Leitgab , R. Seidl , M. Grosse Perdekamp , A. Vossen , I. Adachi , H. Aihara , D. M. Asner , V. Aulchenko

show 142 more authors

T. Aushev A. M. Bakich B. Bhuyan A. Bondar A. Bozek M. Bra\v{c}ko J. Brodzicka T. E. Browder V. Chekelian A. Chen P. Chen B. G. Cheon K. Chilikin K. Cho V. Chobanova Y. Choi D. Cinabro J. Dalseno Z. Dr\'asal D. Dutta S. Eidelman D. Epifanov H. Farhat J. E. Fast V. Gaur N. Gabyshev R. Gillard F. Giordano Y. M. Goh B. Golob J. Haba K. Hayasaka H. Hayashii Y. Hoshi W.-S. Hou Y. B. Hsiung H. J. Hyun T. Iijima A. Ishikawa R. Itoh W. W. Jacobs T. Julius J. H. Kang P. Kapusta E. Kato T. Kawasaki H. J. Kim H. O. Kim J. B. Kim J. H. Kim M. J. Kim J. Klucar B. R. Ko P. Kody\v{s} R. T. Kouzes P. Kri\v{z}an P. Krokovny R. Kumar T. Kumita Y.-J. Kwon J. S. Lange S.-H. Lee Y. Li Z. Q. Liu D. Liventsev D. Matvienko K. Miyabayashi H. Miyata R. Mizuk A. Moll N. Muramatsu E. Nakano M. Nakao Z. Natkaniec M. Nayak E. Nedelkovska C. Ng N. Nellikunnummel O. Nitoh A. Ogawa S. Ogawa T. Ohshima S. Okuno S. L. Olsen C. Oswald P. Pakhlov H. Park H. K. Park T. K. Pedlar R. Pestotnik M. Petri\v{c} L. E. Piilonen M. R\"ohrken H. Sahoo Y. Sakai S. Sandilya L. Santelj T. Sanuki Y. Sato O. Schneider G. Schnell C. Schwanda K. Senyo O. Seon M. E. Sevior M. Shapkin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz A. Sibidanov F. Simon P. Smerkol Y.-S. Sohn A. Sokolov E. Solovieva M. Stari\v{c} M. Sumihama T. Sumiyoshi G. Tatishvili Y. Teramoto T. Tsuboyama M. Uchida T. Uglov Y. Unno S. Uno Y. Usov C. Van Hulse G. Varner V. Vorobyev M. N. Wagner C. H. Wang J. Wang M.-Z. Wang P. Wang M. Watanabe Y. Watanabe K. M. Williams E. Won Y. Yamashita V. Zhilich V. Zhulanov

Authors on Pith no claims yet

classification ✦ hep-ex

keywords crossmeasurementssectionsdifferentialelectron-positronenergykaonpion

0 comments

read the original abstract

Measurements of inclusive differential cross sections for charged pion and kaon production in electron-positron annihilation have been carried out at a center-of-mass energy of Q = 10.52 GeV. The measurements were performed with the Belle detector at the KEKB electron-positron collider using a data sample containing 113 million e+e- -> qqbar events, where q={u,d,s,c}. We present charge-integrated differential cross sections d\sigma_h+-/dz for h+- = pi+-, K+- as a function of the relative hadron energy z = 2*E_h / sqrt{s} from 0.2 to 0.98. The combined statistical and systematic uncertainties for pi+- (K+-) are 4% (4%) at z ~ 0.6 and 15% (24%) at z ~ 0.9. The cross sections are the first measurements of the z-dependence of pion and kaon production for z > 0.7 as well as the first precision cross section measurements at a center-of-mass energy far below the Z^0 resonance used by the experiments at LEP and SLC.

This paper has not been read by Pith yet.

Precision measurement of charged pion and kaon differential cross sections in electron-positron annihilation at Q = 10.52 GeV

discussion (0)