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Congratulations! Thank you, Colin!</div>
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Regards,</div>
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Chris</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Hadstruct <hadstruct-bounces@jlab.org> on behalf of David Richards via Hadstruct <hadstruct@jlab.org><br>
<b>Sent:</b> 20 March 2023 11:10<br>
<b>To:</b> Colin Egerer <cegerer@jlab.org><br>
<b>Cc:</b> hadstruct@jlab.org <hadstruct@jlab.org><br>
<b>Subject:</b> Re: [Hadstruct] Quark Helicity Published</font>
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<div class="" style="word-wrap:break-word; line-break:after-white-space">Hi Colin,
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<div class="">That is great news! </div>
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<div class="">David<br class="">
<div><br class="">
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<div class="">On Mar 20, 2023, at 10:28 AM, Colin Egerer via Hadstruct <<a href="mailto:hadstruct@jlab.org" class="">hadstruct@jlab.org</a>> wrote:</div>
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Hi All,</div>
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As the title states, the quark helicity paper is published now with JHEP:</div>
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<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam11.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Flink.springer.com-252Farticle-252F10.1007-252FJHEP03-282023-29086-26data-3D05-257C01-257Ccjmonahan-2540wm.edu-257C4072e926b8ba4f12546008db29556fd2-257Cb93cbc3e661d40588693a897b924b8d7-257C0-257C0-257C638149219162734255-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C3000-257C-257C-257C-26sdata-3DvNraVLfeQ7-252BgNXJX2UoEJufe9LuXXn2E444BG-252FIwR1s-253D-26reserved-3D0&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=92TXa6Mymc4HFiEgEpT5fTFRxphMxDL4tFH5fba-VPyH5_4mD98T77pMFYnXa7tK&s=1dbew8VyUedzoh814GrPaTIXD6Ek_BqeHroBYmfLdzc&e=" originalsrc="https://link.springer.com/article/10.1007/JHEP03(2023)086" shash="TmbbONmiacS2ZevONUhCa3J49ADgE5ZVdvq0jClLEfUBp07OPhI86aSHXoIi0BQWAkL4XlE9NmMEgVEU9KQQpKnMDL8eeCaDLM2OexDbcYx242aFmlKHNt6dSfWF19TaJfJrQ0Woqw7ZfNjYDvT3WsQDMEDdxTEeH5jZXMa9FJM=" id="LPlnkOWALinkPreview" class="">https://link.springer.com/article/10.1007/JHEP03(2023)086</a></div>
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<a target="_blank" id="LPImageAnchor164942" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam11.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Flink.springer.com-252Farticle-252F10.1007-252FJHEP03-282023-29086-26data-3D05-257C01-257Ccjmonahan-2540wm.edu-257C4072e926b8ba4f12546008db29556fd2-257Cb93cbc3e661d40588693a897b924b8d7-257C0-257C0-257C638149219162734255-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C3000-257C-257C-257C-26sdata-3DvNraVLfeQ7-252BgNXJX2UoEJufe9LuXXn2E444BG-252FIwR1s-253D-26reserved-3D0&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=92TXa6Mymc4HFiEgEpT5fTFRxphMxDL4tFH5fba-VPyH5_4mD98T77pMFYnXa7tK&s=1dbew8VyUedzoh814GrPaTIXD6Ek_BqeHroBYmfLdzc&e=" originalsrc="https://link.springer.com/article/10.1007/JHEP03(2023)086" shash="TmbbONmiacS2ZevONUhCa3J49ADgE5ZVdvq0jClLEfUBp07OPhI86aSHXoIi0BQWAkL4XlE9NmMEgVEU9KQQpKnMDL8eeCaDLM2OexDbcYx242aFmlKHNt6dSfWF19TaJfJrQ0Woqw7ZfNjYDvT3WsQDMEDdxTEeH5jZXMa9FJM=" class=""><img id="LPThumbnailImageId164942" alt="" width="112" height="160" class="" style="display:block" src="https://media.springernature.com/w200/springer-static/cover/journal/13130.jpg"></a></div>
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<a target="_blank" id="LPUrlAnchor164942" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__nam11.safelinks.protection.outlook.com_-3Furl-3Dhttps-253A-252F-252Flink.springer.com-252Farticle-252F10.1007-252FJHEP03-282023-29086-26data-3D05-257C01-257Ccjmonahan-2540wm.edu-257C4072e926b8ba4f12546008db29556fd2-257Cb93cbc3e661d40588693a897b924b8d7-257C0-257C0-257C638149219162734255-257CUnknown-257CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0-253D-257C3000-257C-257C-257C-26sdata-3DvNraVLfeQ7-252BgNXJX2UoEJufe9LuXXn2E444BG-252FIwR1s-253D-26reserved-3D0&d=DwMFCQ&c=CJqEzB1piLOyyvZjb8YUQw&r=phC8jtUHUVIl1OXaA25HKnc5L16EvLwhrqx4rXYGPWA&m=92TXa6Mymc4HFiEgEpT5fTFRxphMxDL4tFH5fba-VPyH5_4mD98T77pMFYnXa7tK&s=1dbew8VyUedzoh814GrPaTIXD6Ek_BqeHroBYmfLdzc&e=" originalsrc="https://link.springer.com/article/10.1007/JHEP03(2023)086" shash="TmbbONmiacS2ZevONUhCa3J49ADgE5ZVdvq0jClLEfUBp07OPhI86aSHXoIi0BQWAkL4XlE9NmMEgVEU9KQQpKnMDL8eeCaDLM2OexDbcYx242aFmlKHNt6dSfWF19TaJfJrQ0Woqw7ZfNjYDvT3WsQDMEDdxTEeH5jZXMa9FJM=" class="" style="text-decoration:none">Non-singlet
quark helicity PDFs of the nucleon from pseudo-distributions - Journal of High Energy Physics</a></div>
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The non-singlet helicity quark parton distribution functions (PDFs) of the nucleon are determined from lattice QCD, by jointly leveraging pseudo-distributions and the distillation spatial smearing paradigm. A Lorentz decomposition of appropriately isolated
space-like matrix elements reveals pseudo-distributions that contain information on the leading-twist helicity PDFs, as well as an invariant amplitude that induces an additional z2 contamination of the leading-twist signal. An analysis of the short-distance
behavior of the space-like matrix elements using matching coefficients computed to next-to-leading order (NLO) exposes the desired PDF up to this additional z2 contamination. Due to the non-conservation of the axial current, we elect to isolate the helicity
PDFs normalized by the nucleon axial charge at the same scale ì2. The leading-twist helicity PDFs as well as several sources of systematic error, including higher-twist effects, discretization errors, and the aforementioned z2 contaminating amplitude</div>
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Best,</div>
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Colin<br class="">
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