ar X iv : h ep - p h / 03 08 29 0 v 1 2 9 A ug 2 00 3 Holography , Entropy and Extra Dimensions

ar X iv : h ep - e x / 00 08 06 5 v 1 2 6 A ug 2 00 0 Search for Large Extra Dimensions in Dielectron and Diphoton Production

ar X iv : h ep - p h / 03 08 24 0 v 1 2 4 A ug 2 00 3 Glueballs , closed fluxtubes and η ( 1440 )

The ηL(1410) component of the η(1440) pseudoscalar has strong affinity for glue. But its mass is incompatible with lattice simulations that predict a much higher value for the 0 glueball. As a consequence it has been suggested that ηL(1410) could signal physics beyond the Standard Model. Here we argue that if glueballs are closed gluonic fluxtubes then ηL(1410) is a prime candidate for the 0 −+...

ar X iv : h ep - p h / 03 08 31 0 v 1 2 9 A ug 2 00 3 1 Ground State Baryons in Covariant Level - Classification Scheme

O(3, 1)L symmetry, the ground state baryons and antibaryons are assigned to the (12× 12× 12)Sym = 364-multiplet in the spin-flavor Ũ(12)SF symmetry. This multiplet includes, in addition to the ordinary 56-multiplet of the static SU(6)SF , the extra chiral 56 ′ and 70-multiplets, called “chiralons,” which are expected to exist with masses in 1 ∼ 2 GeV region. Their electro-magnetic properties, m...

ar X iv : h ep - p h / 03 08 31 8 v 1 2 9 A ug 2 00 3 On the structure of the scalar and D mesons

The qq spectrum is studied within a chiral constituent quark model. It provides with a good fit of the available experimental data from light (vector and pseudoscalar) to heavy mesons. The new D states measured at different factories are studied. The 0 ++ light mesons are analyzed as q ¯ q pairs or tetraquark structures.

ar X iv : h ep - e x / 01 08 01 5 v 1 7 A ug 2 00 1 Search for Large Extra Dimensions at the Tevatron

We report a search for large extra spatial dimensions in p¯ p collisions at a center of mass energy of 1.8 TeV at the Tevatron. We present recent DØ results on graviton-mediated exchange processes, using events containing a pair of electrons or photons. No evidence for signal is found, allowing to place the most restrictive lower limits on the effective Planck scale at the order of 1 TeV for se...