APCTP	■ Introduction · Greetings · Milestones · Organization Chart · Board Members · Staff Members · Former Board Members · Annual Reports · APCTP Logo · Contact us ■ Members · Member Countries · Partnership Institutions ■ Media · APCTP in Media · AAPPS Bulletin ■ Visitor Information · Plan Your Visit · Directions · Tips for Visitors · Facilities Guide · Map ■ Sponsors

Activities	■ Scientific Activities · Scientific Programs · Seminars & Lectures · ICTP Affiliated Center (ICAC) · Scientific Calendar · Call for Programs · Past Scientific Programs · Past Seminars & Lectures · Payment ■ Awards and Visitors · Benjamin Lee Professorship · Visitors · Visitor Information · Visitor Application ■ Outreach Programs · Web Journal <Crossroads> · APCTP Books · Events · Science at Pohang · Past Events

Research	■ Junior Research Groups ■ Young Scientist Training Program ■ Senior Advisory Group ■ APCTP-POSTECH Fellows ■ Publications

Asia Pacific Network	■ Academic Activities in the AP Region · Seminars at IBS: Theoretical Physics of Complex Systems · Center For QUANTUM SPACETIME · Association of Asia Pacific Physical Societies · FIST - Asia Network on HEP · ANPhA - Asian Nuclear Physics Association · APCTP Japan Committee · ICTP Asian Network on Condensed Matter and Complex Systems

Seminars & Lectures

* TITLE

[APCTP JRG Seminar] Order-alpha(s) corrections to the quarkonium electromagnetic current at all orders in the heavy-quark velocity

* SPEAKERS

Name	Affiliation	E-mail
Prof. Jungil Lee	Korea Univ.	Prof. Youngman Kim(APCTP) ykim(at)apctp.org

* HOST(Applicant)

Name	Affiliation	E-mail
-

* DATE / TIME

2009-10-06, 4:30pm

* PLACE

Seminar Room 512, APCTP Headquarters, POSTECH, Pohang, Korea

* ABSTRACT

We compute in order alpha_s the nonrelativistic QCD (NRQCD) short-distance coefficients that match quark-antiquark operators of all orders in the heavy- quark velocity v to the electromagnetic current. We employ a new method to compute the one-loop NRQCD contribution to the matching condition. The new method uses full-QCD expressions as a starting point to obtain the NRQCD contribution, thus greatly streamlining the calculation. Our results show that, under a mild constraint on the NRQCD operator matrix elements, the NRQCD velocity expansion for the quark-antiquark-operator contributions to the electromagnetic current converges. The velocity expansion converges rapidly for approximate J/psi operator matrix elements.

Map

How to get to APCTP

Scientific Activities Calendar

Scientific programs

Modal title

Modal title