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Study of pi(0) pair production in single-tag two-photon collisions

Title
Study of pi(0) pair production in single-tag two-photon collisions
Author
천병구
Keywords
TRANSITION FORM-FACTORS; RADIATIVE-CORRECTIONS; PHOTON; E(+)E(-); MESONS; BELLE
Issue Date
2016-02
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v. 93, NO 3, Article number 032003, Page. 32003-32003
Abstract
We report a measurement of the differential cross section of pi(0) pair production in single-tag two-photon collisions, gamma*gamma -˃ pi(0) pi(0), in e(+) e(-) scattering. The cross section is measured for Q(2) up to 30 GeV2, where Q(2) is the negative of the invariant mass squared of the tagged photon, in the kinematic range 0.5 GeV ˂ W ˂ 2.1 GeV and vertical bar cos theta*vertical bar ˂ 1.0 for the total energy and pion scattering angle, respectively, in the gamma*gamma center-of-mass system. The results are based on a data sample of 759 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider. The transition form factor of the f(0)(980) and that of the f(2)(1270) with the helicity-0, -1, and -2 components separately are measured for the first time and are compared with theoretical calculations.
URI
https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.032003http://hdl.handle.net/20.500.11754/31907
ISSN
2470-0010; 2470-0029
DOI
10.1103/PhysRevD.93.032003
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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