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<div class="moz-cite-prefix">Hi Krishna,<br>
<br>
Very nice abstract and well written. I have no other comments. <br>
<br>
Volker<br>
<br>
On 3/15/16 2:06 AM, Krishna Adhikari wrote:<br>
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<div style="">Dear all,<br style="">
</div>
<div style="">Please find below the draft of the
abstract for my Baryons 2016
(<a class="moz-txt-link-freetext" href="http://baryons2016.physics.fsu.edu/">http://baryons2016.physics.fsu.edu/</a>) 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>
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<br>
</div>
<div>Thank you.<br>
</div>
<div>With best regards,<br>
</div>
<div>Krishna</div>
</div>
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<br>
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