Study of the K{sup +}{pi}{sup +}{pi}{sup -} final state in B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -}

Journal Article · Tue Feb 01 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.032005· OSTI ID:21504848

Guler, H ^[1]; Aihara, H ^[2]; Arinstein, K; Aulchenko, V; Eidelman, S; Kuzmin, A; Poluektov, A; Zhilich, V; Zhulanov, V ^[3]; Aushev, T ^[4]; Bakich, A M; McOnie, S ^[5]; Balagura, V; Liventsev, D; Mizuk, R; Pakhlov, P ^[6]; Barberio, E; Julius, T; Sevior, M E ^[7]; Belous, K ^[8]

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1. University of Hawaii, Honolulu, Hawaii 96822 (United States)
2. Department of Physics, University of Tokyo, Tokyo (Japan)
3. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
4. Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzerland)
5. School of Physics, University of Sydney, NSW 2006 (Australia)
6. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
7. University of Melbourne, School of Physics, Victoria 3010 (Australia)
8. Institute of High Energy Physics, Protvino (Russian Federation)

Using 535x10{sup 6} B-meson pairs collected by the Belle detector at the KEKB e{sup +}e{sup -} collider, we measure branching fractions of (7.16{+-}0.10(stat){+-}0.60(syst)x10{sup -4} for B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and (4.31{+-}0.20(stat){+-}0.50(syst))x10{sup -4} for B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -}. We perform amplitude analyses to determine the resonant structure of the K{sup +}{pi}{sup +}{pi}{sup -} final state in B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -} and find that the K{sub 1}(1270) is a prominent component of both decay modes. There is significant interference among the different intermediate states, which leads, in particular, to a striking distortion of the {rho} line shape due to the {omega}. Based on the results of the fit to the B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} data, the relative decay fractions of the K{sub 1}(1270) to K{rho}, K{omega}, and K*(892){pi} are consistent with previous measurements, but the decay fraction to K{sub 0}*(1430) is significantly smaller. Finally, by floating the mass and width of the K{sub 1}(1270) in an additional fit of the B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} data, we measure a mass of (1248.1{+-}3.3(stat){+-}1.4(syst)) MeV/c{sup 2} and a width of (119.5{+-}5.2(stat){+-}6.7(syst)) MeV/c{sup 2} for the K{sub 1}(1270).

• OSTI ID: 21504848
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevD.83.032005; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
B MESONS
BRANCHING RATIO
ELECTRON-POSITRON COLLISIONS
ELECTRONS
INTERFERENCE
J PSI-3097 MESONS
K*-892 MESONS
K1-1270 MESONS
KAONS PLUS
KEK LINAC
MASS
PARTICLE DECAY
PIONS MINUS
PIONS PLUS
POSITRONS
ACCELERATORS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
AXIAL VECTOR MESONS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARMONIUM
COLLISIONS
DECAY
DIMENSIONLESS NUMBERS
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
KAONS
LEPTONS
LINEAR ACCELERATORS
MATTER
MESONS
PIONS
POSITRON COLLISIONS
PSEUDOSCALAR MESONS
QUARKONIUM
STRANGE MESONS
STRANGE PARTICLES
VECTOR MESONS