
<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class="">Hi Everyone</div><div class=""><br class=""></div>That is indeed an interesting paper. There is also a theoretical follow up today suggesting it is a K1 K molecule. It is hard to know a lot, but if it is one of the I=0 1-+ hybrid states, <div class="">it could be the s-sbar like state which would likely be a few hundred MeV more massive than the pi(1600) as well as narrower than the other states in that nonet. </div><div class=""><br class=""></div><div class="">Curtis<br class=""><div class="">

<meta charset="UTF-8" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div><br class=""><br class=""><div class="preview active-sig-style" id="theme-6" style="opacity: 1;"><div class=""><span style="margin: 0px; padding: 0px; font-family: Helvetica, Arial, sans-serif; font-size: 10px; line-height: 12px; color: rgb(33, 33, 33); display: block;" class=""><span style="font-weight: bold; font-size: 1.4em; line-height: 1em; color: rgb(204, 0, 43);" class="">Curtis A. Meyer</span><span class="Apple-converted-space"> </span>|<span class="Apple-converted-space"> </span><span style="font-size: 1.2em; line-height: 1.2em;" class="">MCS Associate Dean for Research<span class="Apple-converted-space"> </span><br class="">The Otto Stern Professor of Physics<span class="Apple-converted-space"> </span></span><br class=""><a href="mailto:cmeyer@cmu.edu" style="color: rgb(71, 124, 204); text-decoration: none; display: inline;" class="">cmeyer@cmu.edu</a><span class="Apple-converted-space"> </span>|<span class="Apple-converted-space"> </span>412 260 6290</span><div style="margin: 0px; padding: 0px; line-height: 10px; width: 219px; font-size: 1px;" class=""><img src="https://s3.amazonaws.com/htmlsig-assets/spacer.gif" width="508" height="10" style="display: block; width: 219px; height: 5px;" class=""></div><span style="margin: 0px; padding: 0px; font-family: Helvetica, Arial, sans-serif; font-size: 10px; line-height: 12px; display: block;" class=""><span style="font-weight: bold; color: rgb(204, 0, 43);" class="">Carnegie Mellon University</span><span class="Apple-converted-space"> </span><br class=""><span style="color: rgb(33, 33, 33);" class=""></span><span style="color: rgb(33, 33, 33);" class=""></span><span style="color: rgb(33, 33, 33);" class="">Department of Physics, Wean Hall 8410</span><span class="Apple-converted-space"> </span><br class=""><span style="color: rgb(33, 33, 33);" class="">5000 Forbes Ave., Pittsburgh PA, 15213</span><span class="Apple-converted-space"> </span><br class=""><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.curtismeyer.com&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p3b5acpwYNkmZ3alLqoe1DpcHi6vq5JvK_7ohJe1WqI&m=ignBV95QrsRMFnxyXkGwBAzM7ANDpHB_KwWcOAVlIOjiSfRsKS7j1VnggGg5382Q&s=kQbfZEqyNxqBtEF5idVHB3Rj8ugGjSpeBMJJsjpEp4U&e=" style="color: rgb(71, 124, 204); text-decoration: none; display: inline;" class="">www.curtismeyer.com</a><div style="margin: 0px; padding: 0px; line-height: 10px; width: 219px; font-size: 1px;" class=""><img src="https://s3.amazonaws.com/htmlsig-assets/spacer.gif" width="508" height="10" style="display: block; width: 219px; height: 5px;" class=""></div></span><span style="margin: 0px; padding: 0px; line-height: 9px; font-size: 1px; display: block; font-family: Helvetica, Arial, sans-serif;" class=""></span><div style="margin: 0px; padding: 0px; line-height: 10px; width: 219px; font-size: 1px;" class=""><img src="https://s3.amazonaws.com/htmlsig-assets/spacer.gif" width="508" height="10" style="display: block; width: 219px; height: 5px;" class=""></div></div></div></div><div class=""><br class=""></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">

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<div><br class=""><blockquote type="cite" class=""><div class="">On Feb 2, 2022, at 19:30, Shepherd, Matthew <<a href="mailto:mashephe@indiana.edu" class="">mashephe@indiana.edu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class=""><br class="">Hi all,<br class=""><br class="">Tonight on the arXiv is an interesting new result of relevance to GlueX:<br class=""><br class=""><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_2202.00621&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p3b5acpwYNkmZ3alLqoe1DpcHi6vq5JvK_7ohJe1WqI&m=awYX0H9pabs1osN2z2e0FgFI3DSzDaCgyxGqwzQO1k4wp3Pyr1xL8b9VCHgRCWBq&s=NcE_wnz8qmlCU-GNnBK5MYsaKiG_ErOxVLxrpKiYRkg&e=" class="">https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_2202.00621&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p3b5acpwYNkmZ3alLqoe1DpcHi6vq5JvK_7ohJe1WqI&m=awYX0H9pabs1osN2z2e0FgFI3DSzDaCgyxGqwzQO1k4wp3Pyr1xL8b9VCHgRCWBq&s=NcE_wnz8qmlCU-GNnBK5MYsaKiG_ErOxVLxrpKiYRkg&e=</a> <br class=""><br class="">"Observation of an isoscalar resonance with exotic JPC=1−+ quantum numbers in J/ψ→γηη′"<br class=""><br class="">submitted to PRL, and the companion long article for PRD:<br class=""><br class=""><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_2202.00623&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p3b5acpwYNkmZ3alLqoe1DpcHi6vq5JvK_7ohJe1WqI&m=awYX0H9pabs1osN2z2e0FgFI3DSzDaCgyxGqwzQO1k4wp3Pyr1xL8b9VCHgRCWBq&s=s58I4cXPOd8g7m4v_KVFzIpyiQwImEoW2u8cOBPa3-M&e=" class="">https://urldefense.proofpoint.com/v2/url?u=https-3A__arxiv.org_abs_2202.00623&d=DwIGaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=p3b5acpwYNkmZ3alLqoe1DpcHi6vq5JvK_7ohJe1WqI&m=awYX0H9pabs1osN2z2e0FgFI3DSzDaCgyxGqwzQO1k4wp3Pyr1xL8b9VCHgRCWBq&s=s58I4cXPOd8g7m4v_KVFzIpyiQwImEoW2u8cOBPa3-M&e=</a> <br class=""><br class="">It is interesting that the state is relatively narrow (~200 MeV).<br class=""><br class="">Happy Chinese New Year!<br class=""><br class="">Matt<br class=""><br class=""><br class=""><br class="">_______________________________________________<br class="">Halld-physics mailing list<br class=""><a href="mailto:Halld-physics@jlab.org" class="">Halld-physics@jlab.org</a><br class="">https://mailman.jlab.org/mailman/listinfo/halld-physics</div></div></blockquote></div><br class=""></div></body></html>