DSpace Collection:
http://hdl.handle.net/2440/12354
2016-05-04T11:42:22ZOn the QCD evolution of the spin structure function of the proton
http://hdl.handle.net/2440/98488
Title: On the QCD evolution of the spin structure function of the proton
Author: Schreiber, A.W.; Thomas, A.W.; Londergan, J.T.
Abstract: We examine the proposal that the value of the first moment of the spin structure function of the proton g1p(x, Q2) found by the EMC is explained through QCD evolution, taking into consideration the effect of the anomaly. We conclude that this is unlikely to be the complete explanation as we find that the accurate prediction of the first moment implies a distribution g1p(x, Q2) that does not agree with the data. It does not seem to be possible to fit both the shape of g1p(x, Q2) and its first moment simultaneously in such a picture.1990-01-01T00:00:00ZA new approach to nuclear structure functions
http://hdl.handle.net/2440/98487
Title: A new approach to nuclear structure functions
Author: Thomas, A.W.; Michels, A.; Schreiber, A.W.; Guichon, P.A.M.
Abstract: We calculate the structure function of an MIT bag model nucleon bound in self-consistent scalar and vector mean fields corresponding to nuclear matter at an appropriate density. This approach enables us to investigate a number of features of the usual binding correction for the EMC effect. When Fermi motion is included the calculation reproduces the main features of the data.1989-01-01T00:00:00ZSpin dependent structure functions in the cloudy bag model
http://hdl.handle.net/2440/98486
Title: Spin dependent structure functions in the cloudy bag model
Author: Schreiber, A.W.; Thomas, A.W.
Abstract: We derive expressions for the integrals of the spin dependent structure functions g1(x) for the proton and the neutron in the context of the cloudy bag model. We find that the neutron contributes 5–10% to the Bjorken sum rule, while there is a corresponding decrease for the proton's contribution. It is difficult to reconcile these results with those reported in a recent experiment.1988-01-01T00:00:00ZCoherent pions as the origin of excessive soft photons in hadron collisions
http://hdl.handle.net/2440/98485
Title: Coherent pions as the origin of excessive soft photons in hadron collisions
Author: Lo, S.Y.; Schreiber, A.
Abstract: The published inclusive photon spectrum resulting from 70 GeV/c K+ p interactions can be fitted by using a simple model of semi-coherent π0-production. The model relies on the fact that the size of the production region is of the order of fermis and hence the uncertainty relation plays a dominant role in the production of coherent pions.1986-01-01T00:00:00Z