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Title: Transverse momentum dependence of semi-inclusive pion production

Journal Article ·
OSTI ID:915101

Cross sections for semi-inclusive electroproduction of charged pions ($$\pi^{\pm}$$) from both proton and deuteron targets were measured for $0.2<0.5$, $2<4$ GeV$^2$, $0.3<1$, and $$P_t^2<0.2$$ GeV$^2$. We find the azimuthal dependence to be small and consistent with zero, for $$P_t<0.1$$ GeV. In the context of a simple fit, the initial transverse momenta of $$d$$ quarks tends to be larger than for $$u$$ quarks, while the transverse momentum width of the favored fragmentation function is slightly larger than that of the unfavored function.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE - Office of Energy Research (ER)
DOE Contract Number:
AC05-84ER40150
OSTI ID:
915101
Report Number(s):
JLAB-PHY-07-726; DOE/ER/40150-4328; TRN: US0804892
Country of Publication:
United States
Language:
English