Welcome

• Organizers

Room: 02.430

Kaon electromagnetic form factor from lattice QCD

• Christine Davies

Room: 02.430

Discussing the light-meson DAs

• Kornelija Passek-Kumerički

Room: 02.430 The light-cone distribution amplitudes of the pseudoscalar and scalar light mesons are (re)analyzed in the pure perturbative QCD approach to the meson transition form factors, as well as, in the combined analysis of several hard exclusive processes. The informations obtained from the confrontation with the experimental data, the open questions and the limitations of the approach will be discussed.

Renormalization of B-meson light-cone distribition amplitudes

• Yao Ji

Room: 02.430 The B-meson light-cone distribution amplitudes (LCDAs) are matrix elements of operators involving one heavy-quark field sandwiched between the B-meson state and the vacuum. In this talk, I will present the recent developments regarding the evolution of higher-twist LCDAs as well as the renormalization of the leading-twist LCDA at the two-loop order. In particular, I will discuss how the renormalization group equations (RGEs) of higher-twist operators are completely integrable from spin chain models. I will also explain how to calculate the evolution kernel of the leading-twist LCDA using conformal symmetry.

QED effects and B-meson LCDAs

• Robert Szafron

Room: 02.430

Probing pion and kaon LCDAs with data on pion and kaon timelike form factors

• Rusov Aleksey

Room: 02.430

LCDAs for mesons, baryons, and pentaquarks

• Edward Shuryak

Room: 02.430

B_{uds} -> gamma Form Factors in LCSRs @ NLO and 1/lambda_B

• Roman Zwicky

Room: 02.430

Gravitational form factors and light-cone distributions for pseudoscalar mesons

• Kazuhiro Tanaka

Room: 02.430 The gravitational form factors for a hadron, the form factors for the hadron matrix element of the QCD energy-momentum tensor, not only describe the coupling of the hadron with a graviton, but also serve as unique quantities for describing the shape inside the hadron reflecting dynamics of quarks and gluons, such as the internal shear forces acting on the quarks/gluons and their pressure distributions. The gravitational form factors are also relevant to understanding the origin of hadron mass. We consider the quark/gluon contributions to the gravitational form factors for a pseudoscalar meson, and also for the nucleon. We derive the relations satisfied by the gravitational form factors as direct consequences of the symmetries and the equations of motion in QCD, and connections to the generalized (off-forward) parton distributions. Our results show the connections between the gravitational form factors and the higher-twist quark-gluon correlation effects inside the hadrons. Furthermore, we are able to constrain the twist-four gravitational form factors by the trace anomalies in QCD, and derive the corresponding relations at three loop. We mention properties of the gravitational form factors for a heavy meson in the heavy quark limit, and also prospects to calculate the gravitational form factors using the LCSRs.

Moments of light-cone distribution amplitudes from lattice QCD

• Gunnar Bali

Room: 02.430

Quarkonium LCDAs from NRQCD

• Hee Sok Chung
• Wai Kin Lai

Room: 02.430

LCDAs from Euclidean correlation functions

• Philipp Wein

Room: 02.430

Chiral dynamics in hard exclusive reactions

• Maxim Polyakov

Room: 02.430

Pion form factor at large momentum transfers from lattice QCD

• Sara Collins

Room: 02.430

Cold Case: Nucleon Form Factor, factor of 2

• Goran Duplančić

Room: 02.430 Calculation of electromagnetic nucleon form factor in perturbative QCD is an old and seamingly over-discussed story, but there is still a shadow hanging over that straightforward calculation. Namely, there is factor of 2 discrepancy among results obtained by different groups. The usual suspects were normalizations of the nucleon wave function. Different explanations were offered but without conclusive answer and the final statement was that there are simply two different normalizations which both are equally reasonable. Consequently, the problem appeared: two different physical results. The unpleasant situation was circumvented by taking ratio between various amplitudes and everyone was happy. But no one should be. Years passed, we stumbled upon the problem, decided to reopen the case and definitely solve the mystery. The outcome was surprising and, of course, the answer was where no one expected it.

tbd

• Nikolay Kivel

Room: 02.430

LCSRs with B-meson LCDAs

• Yu-Ming Wang

Room: 02.430