HADRON '97 covered a wide spectrum of particle physics, from high-Q 2 events in e +-proton collisions at DESY to the recent discovery of 1 ?+ exotic mesons. This paper reviews progress reported at the conference, in particular the status of glueballs and hybrids. Personal views and interpretations are oofered, sometimes at variance with accepted views. The role of gluons in hadron spectroscopy ...

Single s-channel production of sleptons, such as τ̃ ’s and/or ν̃τ , with their subsequent decay into purely leptonic or dijet final states is possible in hadronic collisions via R-parity violating couplings. We examine the impact of slepton production on bump searches in both the Drell-Yan and dijet channels and examine whether the lepton charge asymmetry in the lν channel provides for additional...

We study the collider phenomenology of a Littlest Higgs model with T-parity. We first stress the important role of the T-odd SU(2) doublet fermions (introduced to make the model T-parity invariant) in high energy scattering processes, such as qq̄ → W HW H where W± H are the T-odd partners of W -bosons. Because the mass of the T-odd SU(2) doublet fermions cannot be too heavy to be consistent with...

We study the s-channel production of a single top squark in hadron collisions through an R-parity-violating mechanism, examining in detail the case in which the squark decays through an R-parity-conserving process into a bottom quark, a lepton, and missing energy. We show that the top squark can be discovered if its mass is less than 400 GeV, or that the current bound on the size of the R-parit...

Single s-channel production of sleptons, such as ~ 's and/or ~ , with their subsequent decay into purely leptonic or dijet nal states is possible in hadronic collisions via R-parity violating couplings. We examine the impact of slepton production on bump searches in both the Drell-Yan and dijet channels and examine whether the lepton charge asymmetry in the ` channel provides for additional sea...

We investigate in detail the effects of the R-parity lepton number violation in the minimal supersymmetric standard model (MSSM) on the parent process pp → ee+X at the CERN Large Hadron Collider (LHC). The numerical comparisons between the contributions of the R-parity violating effects to the parent process via the Drell-Yan subprocess and the gluongluon fusion are made. We find that the R-vio...

We examine whether the fact that QCD is chirally invariant at short distances necessarily leads to the prediction that hadrons form approximate parity doublets, as has been recently put forward by Glozman and collaborators. We show that this is not the case, and we exhibit some of the pitfalls of trying to link the operator product expansion to the hadron spectrum. We illustrate our arguments w...

Single s-channel production of sleptons, such as ~ 's and/or ~ , with their subsequent decay into purely leptonic or dijet nal states is possible in hadronic collisions via R-parity violating couplings. We examine the impact of slepton production on bump searches in both the Drell-Yan and dijet channels and examine whether the lepton charge asymmetry in the ` channel provides for additional sea...

The recent measurement of atomic parity violation in cesium atoms shows a 2.3σ deviation from the standard model prediction. We show that such an effect can be explained by four-fermion contact interactions with specific chiralities or by scalar leptoquarks which couple to the left-handed quarks. For a coupling of electromagnetic strength, the leptoquark mass is inferred to be 1.1 to 1.3 TeV. W...

The R parity odd renormalizable Yukawa interactions of quarks and leptons with the scalar superpartners have the ability to violate the baryon and lepton numbers, change the hadron and lepton flavors and make the lightest supersymmetric particle unstable. The existence of an approximate R parity symmetry would thus affect in a deep way the conventional framework of the Minimal Supersymmetric St...