<html><body><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div data-marker="__QUOTED_TEXT__"><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #000000"><div style="">Dear all,<br style=""></div><div style="">Please find below the draft of the abstract for my Baryons 2016 (http://baryons2016.physics.fsu.edu/) talk. Please let me know if you have comments or corrections.</div><br><div><p style="line-height: 1.656; margin: 0px;"><b><span style="font-size: 17.333333333333332px; font-family: Arial; color: #000000; background-color: transparent; font-variant: normal; text-decoration: none; vertical-align: baseline;">New results on spin structure functions at very low momentum transfers from Jefferson Lab</span></b></p><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">Several experiments in Jefferson Lab have collected a large amount of data on the spin structure of nucleons using polarized electron beam directed on various polarized targets (NH</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">3</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> and ND</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">3</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">, </span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">3</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">He). In these double polarization experiments, either the double spin asymmetries A</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">||</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> and A</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">⊥</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> or the polarized cross section differences Δσ</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">||</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> and Δσ</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">⊥</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> are measured with an unprecedented precision over a wide kinematic range, with 0.02 GeV</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> < Q</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> < 5.0 GeV</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> and 1.08 GeV < W < 3.0 GeV and from these measurements, the spin structure functions and their moments are extracted. These data help us shed more light on the nucleon spin structure in the region of quark-confinement as well in the transition region between hadronic and partonic degrees of freedom. With these data, it is possible to put constraints on quark-hadron duality, test pQCD predictions for the quark polarization at large x, and test various predictions for moments of structure functions from sum rules and QCD based effective theories such as Chiral Perturbation Theory (χPT) as well as from phenomenological models. Additionally, these data make it possible to perform more precise calculations of higher-twist matrix elements in the framework of the Operator Product Expansion. At very low momentum transfers (Q</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">→0), the first moment (Γ</span><span style="font-size: 7.199999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">1</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">) of structure function </span><i><span style="font-size: 17.333333333333332px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">g</span></i><span style="font-size: 7.199999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">1</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> is constrained by the GDH sum rule and its </span><i><span style="font-size: 17.333333333333332px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">χ</span></i><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">PT extensions, which makes measurements of </span><i><span style="font-size: 17.333333333333332px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">g</span></i><span style="font-size: 7.199999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">1</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> in this region uniquely interesting. In this talk, I will present new results on spin structure functions from various experiments at Jefferson Lab with an emphasis on low Q</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> measurements. In particular, I will present new results from the EG4 experiment with CLAS, which measured the double polarized cross section difference on NH</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">3 </span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">and ND</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: sub;">3</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> (with both electron beam and targets longitudinally polarized) down to Q</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;"> = 0.02 GeV</span><span style="font-size: 8.799999999999999px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: super;">2</span><span style="font-size: 14.666666666666666px; font-family: Arial; color: #000000; background-color: transparent; font-weight: 400; font-variant: normal; text-decoration: none; vertical-align: baseline;">.</span></div></div><br></div><div>Thank you.<br></div><div>With best regards,<br></div><div>Krishna</div></div></div></div><br></div></div></body></html>