6 M ay 1 99 9 Intrinsic Kinematics Oscar

6 M ay 1 99 9 Difficult Problems Having Easy Solutions

We discuss how a class of difficult kinematic problems can play an important role in an introductory course in stimulating students’ reasoning on more complex physical situations. The problems presented here have an elementary analysis once certain symmetry features of the motion are revealed. We also explore some unexpected directions these problems lead us.

ar X iv : a st ro - p h / 99 05 37 6 v 1 2 8 M ay 1 99 9 A 6 . 4 - hr positive superhump period in TV

ar X iv : h ep - p h / 99 05 49 0 v 1 2 6 M ay 1 99 9 1 Single transverse spin asymmetries in inclusive hadron production

A consistent phenomenological approach to the computation of transverse single spin asymmetries in inclusive hadron production is presented, based on the assumed generalization of the QCD factorization theorem to the case in which quark intrinsic motion is taken into account. New k⊥ and spin dependent quark distribution and fragmentation functions are considered: some of them are fixed by fitti...

- th / 9 60 50 18 v 1 1 3 M ay 1 99 6 The deformation of the interacting nucleon in the Skyrme model

Changes in the nucleon shape are investigated by letting the nucleon deform under the strong interactions with another nucleon. The parameters of the axial deformations are obtained by minimizing the static energy of the two nucleon system at each internucleon distance R. It is shown that the intrinsic quadrupole moment of the interacting proton, Qp, is about 0.02fm at distances near R ∼ 1.25 f...

ar X iv : n uc l - th / 9 90 50 49 v 2 2 6 M ay 1 99 9 η - and η ′ - meson production in the reaction pn → dM near threshold