Search for heavy leptons and hard penetrating radiation in the neutrino beam, study of diffraction scattering of neutrinos; study of deep inelastic vu scattering in a ne bubble chamber at NAL, and test of the delta s = delta q rule at high momentum transfer using inclusive reactions

We propose here an experiment designed to search for the existence of heavy leptons ({lambda}{sup +}) produced in the collisions of 400 GeV/c protons with matter in the beam dump. These charged leptons, which are assumed to decay by weak interaction will be detected by the interactions of their neutrinos ({upsilon}{sub {lambda}}, {bar {upsilon}}{sub {lambda}}) in a Ne bubble chamber. For leptons with masses of greater than 1 GeV, the {lambda} life time is expected to be too short for the lepton to be observed visually, therefore, the lepton must be identified by a detailed comparison with ordinary {upsilon}{sub {mu}} interactions. We request 200,000 pictures with the beam protons hitting the shield directly and 200,000 pictures with the normal high energy {upsilon}{sub {mu}} beam. In the latter pictures we will study deep inelastic {upsilon}{sub {mu}} scattering, search for muonless {upsilon}{sub {mu}} interactions, search for {upsilon}{sub {mu}} diffractive processes and search for {Delta}S = -{Delta}Q in strange particle production processes. This experiment does not require the E{Pi} or a plate in the bubble chamber although the latter would be very useful and can run without the horn

An Investigation of the Components of the Neutral Beam Produced by High Energy Protons at Nal Using the 30 Inch Bubble Chamber

We wish to search for new neutral particles by investigating the composition of a wide angle neutral beam produced by high energy protons on a Be target. Photons in the beam will be removed by a Pb converter. The resultant neutral beam will be incident on the 30 inch bubble chamber. The composition of the beam will be determined from the kinematic analysis of selected interactions in the bubble chamber, through the decays of neutral particles and through possible anomalies in the hydrogen interactions. As a byproduct we will measure the K-Long flux through the process K-Long + P {yields} K-Short + all. By a slight change in the geometry we can look at a region immediately downstream of the target and measure the characteristics of neutral particles arising from the decay of hyperons and other particles produced in the Be target. We do not require any external equipment besides beam monitoring equipment. We request an initial exposure of 20,000 pictures

Fifteen-year results of a randomized phase III trial of fenretinide to prevent second breast cancer

n/

Two-gluon form factor of the nucleon and J/ψJ/\psi photoproduction

We argue that the t-dependence of the two-gluon form factor of the nucleon should be given by $\Gamma(t)=(1-t/m_{2g}^2)^{-2}$ with $m_{2g}^2\approx 1 GeV^2$. We demonstrate that this form provides a good description of the t-dependence of the cross section of the elastic photoproduction of $J/\psi$-mesons between the threshold region of $E_{\gamma}=11 GeV$ (Cornell), $E_{\gamma}=19 GeV$ (SLAC) and $E_{\gamma}=100 GeV$ (FNAL) including the strong energy dependence of the t-slope. It is also well matched with the recent HERA data. The same assumption explains also the t-dependence of $\phi$-meson electroproduction near threshold at $W=2.3 GeV, Q^2=1.0 GeV^2$.Comment: 10 pages, 4 figure

Recent results in relativistic heavy ion collisions: from ``a new state of matter'' to "the perfect fluid"

Experimental Physics with Relativistic Heavy Ions dates from 1992 when a beam of 197Au of energy greater than 10A GeV/c first became available at the Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL) soon followed in 1994 by a 208Pb beam of 158A GeV/c at the Super Proton Synchrotron (SPS) at CERN (European Center for Nuclear Research). Previous pioneering measurements at the Berkeley Bevalac in the late 1970's and early 1980's were at much lower bombarding energies (~ 1 A GeV/c) where nuclear breakup rather than particle production is the dominant inelastic process in A+A collisions. More recently, starting in 2000, the Relativistic Heavy Ion Collider (RHIC) at BNL has produced head-on collisions of two 100A GeV beams of fully stripped Au ions, corresponding to nucleon-nucleon center-of-mass energy, sqrt(sNN)=200 GeV, total c.m. energy 200A GeV. The objective of this research program is to produce nuclear matter with extreme density and temperature, possibly resulting in a state of matter where the quarks and gluons normally confined inside individual nucleons (r < 1 fm) are free to act over distances an order of magnitude larger. Progress from the period 1992 to the present will be reviewed, with reference to previous results from light ion and proton-proton collisions where appropriate. Emphasis will be placed on the measurements which formed the basis for the announcements by the two major laboratories: "A new state of matter", by CERN on Feb 10, 2000 and "The perfect fluid", by BNL on April 19, 2005.Comment: 62 pages, 39 figures. Review article published in Reports on Progress in Physics on June 23, 2006. In this published version, mistakes, typographical errors, and citations have been corrected and a subsection has been adde

Charmonium absorption by nucleons

$J/\Psi$ dissociation in collisions with nucleons is studied within a boson exchange model and the energy dependence of the dissociation cross section is calculated from the threshold for $\Lambda_c{\bar D}$ production to high energies. We illustrate the agreement of our results with calculations based on short distance QCD and Regge theory. The compatibility between our calculations and the data on $J/\Psi$ photoproduction on a nucleon is discussed. We evaluate the elastic $J/\Psi{+}N$ cross section using a forward dispersion relation and demonstrate the overall agreement with the predictions from QCD sum rules. Our results are compatible with the phenomenological dissociation cross section evaluated from the experimental data on $J/\Psi$ production from $\gamma{+}A$, $p{+}A$ and $A{+}A$ collisions.Comment: 14 pages, revtex, including 13 figures, accepted for publication in Phys. Rev.

The Italian Network for Tumor Biotherapy (NIBIT): Getting together to push the field forward

As for a consolidated tradition, the 5th annual meeting of the Italian Network for Cancer Biotherapy took place in the Certosa of Pontignano, a Tuscan monastery, on September 20–22, 2007. The congress gathered more than 40 Italian leading groups representing academia, biotechnology and pharmaceutical industry. Aim of the meeting was to share new advances in cancer bio-immunotherapy and to promote their swift translation from pre-clinical research to clinical applications. Several topics were covered including: a) molecular and cellular mechanisms of tumor escape; b) therapeutic antibodies and recombinant constructs; c) clinical trials up-date and new programs; d) National Cooperative Networks and their potential interactions; e) old and new times in cancer immunology, an "amarcord". Here, we report the main issues discussed during the meeting