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Systematics of mid-rapidity E{sub T} and multiplicity distributions in nucleus and nucleon collisions at AGS energies

Description: In the period 1986--1992, the E802 Collaboration at the BNL-AGS made systematic measurements of transverse energy (E{sub T}) emission in an electromagnetic calorimeter (PbGl) which covered the pseudorapidity interval 1.25 {le} {eta} {le} 2.50 and half the azimuth (where mid-rapidity for these energies is y{sub cm}{sup N N} {approx_equal} 1.6 - 1.7 depending the species). The other half of the azimuth was occupied by a 25 msr magnetic spectrometer with full particle identification. Runs were als… more
Date: December 31, 1998
Creator: Tannenbaum, M.J. & Collaboration, E802
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Partner: UNT Libraries Government Documents Department
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The BRAHMS experiment at RHIC goals and status

Description: The BRAHMS experiment is designed to measure semi-inclusive spectra of charged hadron over a wide range of rapidity. It will yield information on particle production, both at central rapidity and in the baryon rich fragmentation region. Examples of measures for soft as well as for hard physics are presented. The present status of BRAHMS is discussed, as well as the plans for measurements in the first year of running at RHIC.
Date: December 1, 1998
Creator: Videbaek, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MEGA -- A search for {mu} {r_arrow} e{gamma}

Description: The MEGA experiment is a search for the decay {mu} {r_arrow} e{gamma}. Even though there is no fundamental reason to expect lepton number to be a conserved quantity, processes such as {mu} {r_arrow} e{gamma} have not been observed. (The present upper limit for the branching ratio for {mu} {r_arrow} e{gamma} is 4.9 x 10{sup {minus}11}.) The minimal standard model of electroweak interactions, which is enormously successful, builds in lepton number conservation. However, the decay {mu} {r_arrow} e… more
Date: December 1, 1998
Creator: Mischke, R. E.
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Partner: UNT Libraries Government Documents Department
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Investigation of rare particle production in high energy nuclear collisions. Progress report, December 15, 1997--December 14, 1998

Description: The program is an investigation of the hadronization process through experimental measurement of rare particle production in high energy nuclear interactions. These interactions provide an environment similar in energy density to the conditions in the Big Bang. The authors are currently involved in two major experiments to study this environment, E896 at the AGS and STAR at RHIC. They have completed the first physics running of E896, a search for the H dibaryon and measurement of hyperon produc… more
Date: November 1, 1998
Creator: Crawford, H.J. & Engelage, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Research in theoretical and experimental elementary particle physics. Final report]

Description: This report gives summaries of particle physics research conducted by different group members for Task A. A summary of work on the CLEO experiment and detector is included for Task B along with a list of CLEO publications. During the present grant period for Task C, the authors had responsibility for the design, assembly, and programming of the high-resolution spectrometer which looks for narrow peaks in the output of the cavity in the LLNL experiment. They successfully carried out this task. V… more
Date: November 1, 1998
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Search for quark-lepton compositeness using the Drell-Yan process at D-Zero

Description: We present preliminary results on the search for quark-lepton compositeness using the Drell-Yan process in p{anti p} collisions at {radical}s = 1.8 TeV. If quarks and leptons were composite with common substructure, the dielectron mass spectrum would show an excess in the high mass region relative to the Standard model. We observe no such excess. We set a 95% confidence level lower limit on the compositness scale using a contact interaction model.
Date: September 1, 1998
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Final report of the High Energy Physics Group at the University of South Alabama, April 15, 1990--April 14, 1997

Description: The experimental high energy physics group at the University of South Alabama worked on three experiments conducted at the Fermi National Accelerator Laboratory. These experiments were E-705, E-771, and E-871. The group helped in taking data, analysis of data, and for one experiment in the construction of a new spectrometer. Experiment E-705 used 300 GeV/c p, {pi}{sup {minus}}, {anti p} and {pi}{sup +} on Li to study hadronic production of charmonium and direct photon production. The authors pa… more
Date: August 15, 1998
Creator: Jenkins, C.M. & Clark, R.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Particle physics with kaons, muons and neutrinos. Summary of JHF K-Arena working groups 1a/1b

Description: The areas of rare K and {mu} decays and of neutrino oscillations are very active at the present time, and there is little reason to doubt that this will continue to be the case in the JHF era. The session featured talks describing the present status and projected future activity in these areas.
Date: August 1, 1998
Creator: Kuno, Yoshitaka & Littenberg, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Proceedings of PIXEL98 -- International pixel detector workshop

Description: Experiments around the globe face new challenges of more precision in the face of higher interaction rates, greater track densities, and higher radiation doses, as they look for rarer and rarer processes, leading many to incorporate pixelated solid-state detectors into their plans. The highest-readout rate devices require new technologies for implementation. This workshop reviewed recent, significant progress in meeting these technical challenges. Participants presented many new results; many o… more
Date: August 1, 1998
Creator: Anderson, D.F. & Kwan, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Research in theoretical physics. Final report

Description: This report summarizes the research carried out under Grant DE-FG02-85ER40211. The main topics covered are: astroparticle physics at very high and ultrahigh energies; search for new physics by means of detectors of ultrahigh energy particles of extraterrestrial origin. Methods for searching in heavy quark decays for signatures of physics beyond the standard model are developed.
Date: June 1, 1998
Creator: Domokos, G. & Kovesi-Domokos, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Studying the spin structure of the proton using the solenoidal tracker at RHIC

Description: The primary goal of RHIC is to produce nuclear matter under extremes of temperature and density sufficient to excite the QCD vacuum, resulting in the creation of a deconfined plasma of quarks and gluons. A second goal central to the RHIC scientific program is to advance the study of the spin structure of the proton significantly beyond what has been learned from deep inelastic scattering (DIS) measurements by studying spin asymmetries in strong processes involving the partonic constituents of p… more
Date: May 1, 1998
Creator: Hallman, T.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Evidence of K{sup +} {r_arrow} {pi}{sup +}{nu}{anti {nu}}: The BNL E787 1995 result (How did we get here)

Description: The kaon was studied very thoroughly since its discovery some 50 years ago. In the study of charged kaon branching ratios, it was noticed that K{sup +} {r_arrow} {pi}{sup 0}e{sup +}{nu}{sub e} is allowed while K{sup +} {r_arrow} {pi}{sup +}{nu}{anti {nu}} is not. The latter was then empirically classified as a forbidden decay, leading to the so called strangeness changing current rule. The decay K{sup +} {r_arrow} {pi}{sup 0}e{sup +}{nu}{sub e} is mediated by the strangeness changing charged cu… more
Date: February 1, 1998
Creator: Chiang, I. H. & Collaboration, E787
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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