Intensity-Frontier Antiproton Physics with The Antiproton Annihilation Spectrometer (TAPAS) at Fermilab

Apollinari, Giorgio ; /Fermilab ; Asner, David M. ; /PNL, Richland ; Baldini, Wander ; /INFN, Ferrara ; Bartoszek, Larry ; Broemmelsiek, Daniel R. ; Brown, Charles N. ; /Fermilab ; Chakravorty, Alak ; /St. Xavier U., Chicago ; Colas, Paul ; /Saclay ; Derwent, Paul ; /Fe

关键词: ACCELERATORS;    ANNIHILATION;    ANTIMATTER;    ANTIPROTON SOURCES;    ANTIPROTONS;    ASYMMETRY;    BARYONS;    CHARMONIUM;    CROSS SECTIONS;    DATA ACQUISITION;    FERMILAB;    FERMILAB TEVATRON;    HADRONS;    HYPERONS;    MAGNETIC SPECTROMETERS;    PHYSICS;    SPECTROMETERS;    STANDARD MODEL;    TANKS Experiment-HEP;   

DOI  :  10.2172/1041570
RP-ID  :  FERMILAB-PROPOSAL-1022
PID  :  OSTI ID: 1041570
Others  :  TRN: US1202839

学科分类：物理（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The Fermilab Antiproton Source is the world's most intense source of antimatter. With the Tevatron program now behind us, this unique facility can help make the case for Fermilab's continued accelerator operations. The Antiproton Source can be used for unique, dedicated antimatter studies, including medium-energy {bar p}-annihilation experiments. We propose to assemble a powerful, yet cost-effective, solenoidal magnetic spectrometer for antiproton-annihilation events, and to use it at the Fermilab Antiproton Accumulator to measure the charm production cross section, study rare hyperon decays, search for hyperon CP asymmetry, precisely measure the properties of several charmonium and nearby states, and make the first measurements of the Drell-Yan continuum in medium-energy antiproton annihilation. Should the charm production cross section be as large as some have proposed, we will also be able to measure D{sup 0}-{bar D}{sup 0} mixing with high precision and discover (or sensitively limit) charm CP violation. The observation of charm or hyperon CP violation would be evidence for physics beyond the Standard Model, with possible implications for the origin of the baryon asymmetry of the universe - the question of what happened to all the antimatter that must have been produced in the Big Bang. The experiment will be carried out by an international collaboration and will require some four years of running time. As possibly the sole hadron experiment in progress at Fermilab during that time, it will play an important role in maintaining a broad particle physics program at Fermilab and in the U.S. It will thus help us to continue attracting creative and capable young people into science and technology, and introducing them to the important technologies of accelerators, detectors, and data acquisition and analysis - key roles in society that accelerator-based particle physics has historically played.