Overview of SIDIS results from Hall B at Jefferson Lab

Conference · Thu Sep 01 04:00:00 EDT 2016

DOI:https://doi.org/10.2172/1986431· OSTI ID:1986431

Avakian, Harut ^[1]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

We present studies of spin and azimuthal asymmetries in pion production in semi-inclusive deep inelastic scattering (SIDIS), using the data sets from the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab with polarized $$NH_3$$ and unpolarized hydrogen targets. Three run periods, e1-6, e1-f and eg1-dvcs used respectively 5.7, 5.5 and 5.8 GeV longitudinally polarized electron beam and unpolarized liquid hydrogen (e1-6, e1-f) and polarized $$NH_3$$ (eg1-dvcs) targets. Pion channels ($$\pi^+$$, $$\pi^-$$, $$\pi^0$$) were studied over a broad kinematical range ($x = 0.1 - 0.6$, $Q^2 = 1.0 - 4.5 $ GeV$^2$, $z = 0.0 - 1.0$, $$\Phperp^2 = 0.0 - 1.0$$ GeV$^2$, and $$-180^\circ < \phi < 180^\circ$$). These measurements give insights into the transverse momentum dependence of parton distribution functions (PDFs) for different polarization states, describing the dynamics of quarks and gluons inside of the proton.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1986431
• Report Number(s): JLAB-PHY-17-2406; DOE/OR/23177-4066
• Country of Publication: United States
• Language: English