<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 dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><span class="" style="font-size: 14px;">Dear all,</span></div><div class=""><span class="" style="font-size: 14px;"><br class=""></span></div><div class=""><span class="" style="font-size: 14px;">next week there will be one Theory Seminar, on Wednesday July 11 at 1:00pm.</span></div><div class=""><span class="" style="font-size: 14px;">Details below:</span></div><div class=""><span class="" style="font-size: 14px;"><br class=""></span></div><div class=""><span class="" style="font-size: 14px;"><b class="">Wednesday, July 11</b> - </span><span class="" style="font-size: 14px;">1:00pm - CEBAF Center, Room L102</span></div><div class=""><span style="font-size: 14px;" class="">Alessandro Bacchetta (Pavia U. and INFN): </span></div><div class=""><span style="font-size: 14px;" class=""><span class="">"Effect of flavor-dependent partonic transverse momentum </span>on the determination of the W boson mass in hadronic collisions"</span></div><span class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class=""><br class=""></span></div></span><div class=""><span class="" style="font-size: 14px;">The link to attend the seminar remotely via Bluejeans is available at <a href="https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html" class="">https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html</a> </span></div><div class=""><span class="" style="font-size: 14px;">Looking forward to seeing you next week,</span><br class=""><br class=""><span class="" style="font-size: 14px;"> Alessandro, Andrea, Bipasha</span></div><div class=""><span class="" style="font-size: 14px;"><br class=""></span></div><div class=""><span style="font-size: 14px;" class="">---------------------------------------------- </span></div><span class="">Abstract: </span></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="">Within the framework of transverse-momentum-dependent factorization, we investigate for the first time the impact of a flavor-dependent intrinsic transverse momentum of quarks on the production of W^± bosons in proton-proton collisions at \sqrt{s} = 7 TeV. </span></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="">We estimate the shift in the extracted value of the W boson mass (M_W) induced by different choices of flavor-dependent parameters for the intrinsic quark transverse momentum by means of a template fit to the transverse-mass and the lepton transverse-momentum distributions of the W-decay products. </span></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="">We obtain − 11 ≤ ∆MW^+ ≤ 4MeV and−6 ≤ ∆MW^− ≤ 2 MeV with a statistical uncertainty of ± 4 MeV. </span></div><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><span class="">These findings call for more detailed investigations of flavor-dependent nonperturbative effects linked to the proton structure at hadron colliders.</span></div></body></html>