1 1 1 M ar 1 99 4 DIAS - STP - 94 - 05 February 1994

ar X iv : h ep - p h / 94 05 25 5 v 1 9 M ay 1 99 4 6453 April , 1994 ( T / E ) Spin , Mass , and Symmetry

ar X iv : h ep - p h / 94 05 28 5 v 1 1 3 M ay 1 99 4 TUTP – 94 - 10

We consider dyon configurations in the standard electroweak model. In the presence of a θ term and no fermions, the usual result q = (n+ θ/2π)e is obtained for the electric charge spectrum. The effect of including standard model fermions is discussed qualitatively.

6 M ay 1 99 4 DIAS − STP − 94 − 18 Revised

The BH n (l, m) algebra is defined by two sets of generators one of which satisfy the relations of the braid group and the other the relations of the Hecke algebra of projectors.These algebras are then combined by additional relations in a way which generalize the Birman-Wenzl algebra C n (l, m). In this paper we Yang-Baxterize the algebra BH and compute solutions of the Yang-Baxter equation.Th...

ar X iv : h ep - t h / 94 10 05 5 v 1 9 O ct 1 99 4 RESOLUTION OF DIAGONALS AND MODULI SPACES

ar X iv : a st ro - p h / 94 05 03 3 v 1 1 3 M ay 1 99 4 Delayed Hard Photons from Gamma - Ray Bursts

The delayed hard (up to 25 GeV) photons observed more than an hour following a gamma-ray burst on February 17, 1994 may result from the collisions of relativistic nucleons with a dense cloud, producing π 0. The required cloud density is ∼ 2 × 10 11 cm −3. This cloud may be the remains of the disrupted envelope of a neutron star, and may survive as an excretion disc of ∼ 10 14 –10 15 cm radius a...