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<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Dear Colleagues,</span></div>
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<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">This
is the 1st circular of the 2022 edition of the Correlations in Partonic and Hadronic Interactions (CPHI 2022) workshop.</span></div>
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">After previous iterations
taking place in Yerevan (2009, 2018) and at CERN (2020), we are planning for a 4 day workshop which will take place
</span><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">in person</span><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">
at</span><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap"> Duke University March 7-12.</span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">The workshop will
take place in Love Auditorium on Duke’s West campus. This workshop venue will provide ample space for social distancing and we strive to make the workshop as safe as possible by implementing measures like masking and distancing.</span></div>
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Duke university
is easily reached using RDU airport which is about 20 miles away and served by all major airlines. Several hotels of varying price range are located close to Duke Campus with several within walking distance and most providing shuttles to campus.</span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">While a majority
of the program will be by invitation, the organizers encourage the submission of abstracts for contributed talks. The
</span><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">abstracts can be submitted</span><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">
at </span><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__indico.cern.ch_event_854338_abstracts_&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=TI1-uR1CNrL-lIqQDSyKdxNA8TlS9bg3dZbKl21HDQU&m=Vsz5okbPQanlaaGE1PzJBhHKftsZJn2BXaF8IQg7XbxOC2XF8sFwXMKylB_k93GG&s=pyWmrGRfmWDlcf3j7AjJctz5OtqanqGtfqT9air8GIg&e=" class="" style="text-decoration:none"><span class="" style="font-size:11pt; font-family:Arial; color:rgb(17,85,204); font-variant-ligatures:normal; font-variant-east-asian:normal; text-decoration:underline; text-decoration-skip:none; vertical-align:baseline; white-space:pre-wrap">https://indico.jlab.org/event/498/abstracts/.</span></a><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">
Limited funding to support travel is available. </span></div>
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">The organizers encourage
in particular early career scientists to submit abstracts and participate in the workshop. The support of early career scientists and those from underrepresented groups will be a priority when considering funding requests.</span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">The main goal of
the workshop is to discuss important and recent results on the study of the 3D structure of protons, hadronization dynamics and initial-final state correlations from JLab12, CERN, BNL, DESY and KEK experiments as well as the resulting theory and phenomenology
challenges for the extraction and interpretation of TMDs and GPDs from existing data. A further focus will be to identify relevant systematic uncertainties in the measurements and to inform possible future measurements. </span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Registration and
additional information on the workshop will be available on the workshop homepage
<a href="https://indico.jlab.org/event/498/" class="">https://indico.jlab.org/event/498/</a></span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Below are key questions
that we plan to address:</span></div>
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<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap"> </span><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Transverse
Structure of nucleon and QCD issues associated with 3D structure</span></div>
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<li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Factorization issues in hadron production</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Study of the QCD evolution properties
of 3D PDFs.</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Unintegrated and Generalized Transverse
Momentum Distributions</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Evolution of TMDs and fits to physical
cross sections</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">MC generators for global analysis of
3D PDFs</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Phenomenology of 3D parton distribution
and fragmentation functions.</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">3D PDFs from Lattice QCD.</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Extraction of PDFs from di-hadron production.</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Radiative corrections to hard scattering
in exclusive and semi-inclusive processes</span></div>
</li></ul>
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<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Partonic
Structure beyond Densities</span></div>
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<li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-weight:400; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Nuclear modifications
of distribution functions.</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Target fragmentation and conditional
probabilities</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Higher twist asymmetries in SIDIS</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">New insights on 3D PDFs from non-perturbative
models</span></div>
</li></ul>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Essential
observables, which will direct the future experimental effort in</span></div>
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<li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Leptoproduction with fixed target facilities
at CERN, JLab and EIC</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Drell-Yan lepton pair production and
Drell-Yan plus jets</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Higgs boson production and Higgs boson
plus jets</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Heavy flavor production</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Soft particle production and multi-parton
interactions</span></div>
</li></ul>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">QCD
in the Nuclear Environment</span><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">}</span></div>
<ul class="" style="margin-top:0; margin-bottom:0">
<li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">PDF nuclear modifications and short-range
nucleon correlations</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Flavor dependence of nuclear modification
effects</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Nuclear partonic distributions including
</span><span class="" style="font-size:11pt; font-weight:700; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">x>1</span><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">
region </span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Tagged SIDIS processes off nuclear
targets</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Hadronization processes in Nuclear
SIDIS</span></div>
</li><li dir="ltr" aria-level="1" class="" style="list-style-type:disc; font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Hard nuclear QCD processes and Color
transparency</span></div>
</li></ul>
<br class="">
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Please direct questions
about the conference, travel or funding to the organizers.</span></div>
<br class="">
<div class="" style="line-height:1.38; margin-top:0pt; margin-bottom:0pt"><span class="" style="font-size:11pt; font-family:Arial; font-variant-ligatures:normal; font-variant-east-asian:normal; vertical-align:baseline; white-space:pre-wrap">Miguel Arratia,
Harut Avakian, Alessandro Bacchetta, Zhongbo Kang, Bakur Pasamyan, Anselm Vossen</span></div>
</div>
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