Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-10-18
Phys.Rev. D65 (2002) 074031
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 15 figures in .eps format included, typesetted in RevTeX and epsfig.sty, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.65.074031
We discuss in detail the option to access the transversity distribution function $h_1(x)$ by utilizing the analyzing power of interference fragmentation functions in two-pion production inside the same current jet. The transverse polarization of the fragmenting quark is related to the transverse component of the relative momentum of the hadron pair via a new azimuthal angle. As a specific example, we spell out thoroughly the way to extract $h_1(x)$ from a measured single spin asymmetry in two-pion inclusive lepton-nucleon scattering. To estimate the sizes of observable effects we employ a spectator model for the fragmentation functions. The resulting asymmetry of our example is discussed as arising in different scenarios for the transversity.
Bianconi Andrea
Jakob Rainer
Radici Marco
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