Radiative decay width measurements of neutral kaon excitations using the primakoff effect.

A Alavi-Harati,G Corti,J Hamm,V Jejer,C Bown,N Solomey,Y W Wah,K Senyo,P Shanahan,R F Barbosa,S Averitte,A Bellavance,S A Taegar,E C Swallow,V Prasad,R J Tesarek,A Roodman,A R Erwin,L Bellantoni,E Blucher,H G E Kobrak,J Ladue,S Childress,P Mikelsons,A Glazov,B Winstein,P A Toale,R Tschirhart,A Golossanov,S Bright,A Cunha,J Whitmore,E D Zimmerman,R Ford,K Arisaka,B Quinn,K S Nelson,A Ledovskoy,S E Turner,E Monnier,S Schnetzer,J Belz,P Mcbride ,E Cheu,R Coleman,K Hanagaki,T Nakaya,R Winston,P Shawhan ,A Tripathi,T Yamanaka,T Alexopoulos,X R Qi,R Stone ,G B Thomson,R Pordes,S Hidaka,H B White,G J Bock,B Cox,A Barker ,J Wang,V O’dell ,E Halkiadakis,D Medvigy,Gerard J Graham ,W Slater,E Ramberg ,John M Shields ,Y Hsiung ,M Barrio,A Lath,S Somalwar ,R E Ray,Hoang Dai Nghia Nguyen ,R Keßler ,M W Arenton ,M Corcoran ,D R Bergman,J Graham,D A Jensen

doi:10.1103/physrevlett.89.072001

Radiative decay width measurements of neutral kaon excitations using the primakoff effect.

A Alavi-Harati, G Corti + Show 79 more

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https://doi.org/10.1103/physrevlett.89.072001

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Journal: Physical review letters	Publication Date: Jul 26, 2002
Citations: 8

Affiliation: University of Wisconsin–Madison, University of Virginia, University of Arizona, University of Chicago, Osaka University, Fermilab, Rutgers, The State University of New Jersey, Rice University, University of California, San Diego, University of Colorado Boulder, University of California, Los Angeles

#Naive Quark Model #Primakoff Effect + Show 8 more

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Abstract

We use K(L)'s in the 100-200 GeV energy range to produce 147 candidate events of the axial vector pair K1(1270)-K1(1400) in the nuclear Coulomb field of a Pb target and determine the radiative widths Gamma(K1(1400)-->K0+gamma)=280.8+/-23.2(stat)+/-40.4(syst) keV and Gamma(K1(1270)-->K0+gamma)=73.2+/-6.1(stat)+/-28.3(syst) keV. These first measurements appear to be lower than the quark-model predictions. We also place upper limits on the radiative widths for K(*)(1410) and K(*)(2)(1430) and find that the latter is vanishingly small in accord with SU(3) invariance in the naive quark model.

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