Collins Asymmetries in Inclusive Charged KK and Kπ Pairs Produced in e⁺e⁻ Annihilation

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Collins Asymmetries in Inclusive Charged KK and Kπ Pairs Produced in e⁺e⁻ Annihilation

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Title: Collins Asymmetries in Inclusive Charged KK and Kπ Pairs Produced in e⁺e⁻ Annihilation
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Grauges, E.;
Palano, A.;
Eigen, G.;
Stugu, B.;
Izen, Joseph M.;
Lou, Xinchou;
BaBar Collaboration
Date Created: 2015-12-22
Format: Text
Item Type: Article
Keywords: Hadrons
Kaons
Transverse momentum
Annihilation reactions
Abstract: We present measurements of Collins asymmetries in the inclusive process e⁺e⁻ → h₁h₂Χ, h₁h₂ = KK, Kπ, ππ at the center-of-mass energy of 10.6 GeV, using a data sample of 468 fb⁻¹ collected by the BABAR experiment at the PEP-II B factory at SLAC National Accelerator Center. Considering hadrons in opposite thrust hemispheres of hadronic events, we observe clear azimuthal asymmetries in the ratio of unlike sign to like sign, and unlike sign to all charged h₁h₂ pairs, which increase with hadron energies. The Kπ asymmetries are similar to those measured for the ππ pairs, whereas those measured for high-energy KK pairs are, in general, larger.
Publisher: American Physical Society
ISSN: 1550-7998
Source: Physical Review D - Particles, Fields, Gravitation and Cosmology
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.92.111101
Persistent Link: http://hdl.handle.net/10735.1/4939
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, et al. 2015. "Collins asymmetries in inclusive charged KK and Kπ pairs produced in e⁺e⁻ annihilation." Physical Review D - Particles, Fields, Gravitation and Cosmology 92(11), doi:10.1103/PhysRevD.92.111101.
Terms of Use: ©2015 American Physical Society

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