Search For The H Dibaryon At The Brookhaven 2 Gev C Kaon Beam Line PDF Download
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| Total Pages | : 7 |
| Release | : 1991 |
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Download Search for the H-dibaryon at the Brookhaven 2 GeV/c Kaon Beam Line Book in PDF, ePub and Kindle
In this talk I will summarize the motivation for H-dibaryon searches and describe efforts at Brookhaven to find this particle. The most recently run experiment, using a new 2 GeV/c kaon beam line, has looked for the H in the at-rest formation reaction (?− + d){sub atom} {r arrow} H + n, where the monoenergetic neutron was detected. This experiment is sensitive to an H in the range near the?? mass, a region largely unconstrained by other measurements. Data analysis is in progress, so no results are available yet. A second search technique using a 3He target is also described.
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| Total Pages | : 4 |
| Release | : 1991 |
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Download The Search for the H Dibaryon with the BNL 2. 0 GeV Book in PDF, ePub and Kindle
The status is given for two experiments being carried out to search for evidence of the H dibaryon. BNL experiments E813 and E836 will use the new 2 GeV/c kaon beam line. The former has recently begun data taking. They cover complementary regions of mass-sensitivity and promise to provide sensitive tests of the existence of the H. 12 refs.
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| Release | : 2001 |
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Download H Particle Searches at Brookhaven Book in PDF, ePub and Kindle
Following the suggestion by R.L. Jaffe twenty years ago, researchers have been trying to establish the existence of a six-quark object, termed the H dibaryon, predicted by the phenomenological quark bag model. This object quickly became the focus of experimental searches at several locations, including the AGS. This search still continues, with perhaps the most active program being carried out at the 2.0 GeV/c beam line at the BNL-AGS. The research was considerably enhanced by the writing of two notable papers at BNL by Aerts and Dover, which gave quantitative predictions for H-production cross sections in two very different reaction mechanisms. One of these, the formation of cascade atomic deuterium to form the H by fusion, had been first suggested by P.D. Barnes. The 2.0 GeV/c line at the AGS was specifically designed to provide an adequate kaon flux for double strangeness and charge exchange reactions. It has been used for two H searches, E813 and E836, as well as for several[Lambda][Lambda] searches, E885 and E906. These four experiments are setting significant limits on H-production. The results of these experiments are discussed, and descriptions of related H searches at Brookhaven are given.
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| Total Pages | : 754 |
| Release | : 1993 |
| Genre | : Power resources |
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Download Energy Research Abstracts Book in PDF, ePub and Kindle
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| Release | : 1986 |
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Download Future Dibaryon Research at BNL. Book in PDF, ePub and Kindle
An experiment designed to search for a strangeness -1 dibaryon is discussed. The experiment will use the 3He(K−, .pi.)nD/sub s/ reaction and is expected to begin near the end of the year at the BNL AGS using the existing LESB-I beamline and hypernuclear spectrometer system. Planned searches for a strangeness -2 dibaryon are also discussed. The strangeness -2 dibaryon searches will however require the construction of a new 1.8 GeV/c kaon beam line at the AGS.
| Author | : S Oneda |
| Publisher | : World Scientific |
| Total Pages | : 946 |
| Release | : 1992-05-07 |
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| ISBN | : 9814554782 |
Download Hadron '91 - Proceedings Of The International Conference Book in PDF, ePub and Kindle
In this volume, the structure and reactions of radioactive nuclei are described. The relevance of halo nuclei to nuclear astrophysics is stressed in different contributions. Other topics included are: three-body aspects of light neutron-rich nuclei, elastic scattering, charge exchange and Coulomb excitation, fragment moment distribution, mass at half-life measurement and electromagnetism-induced fission.
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| Release | : 2005 |
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Download Search for the H Dibaryon (S Book in PDF, ePub and Kindle
The observed hadrons are understood as bound states of three quarks (baryons) or of quarks and antiquarks (mesons). To date no six quark bound state other than the loosely bound deuteron has been observed. Quantum Chromodynamics permits other color-singlet bound states of quarks, and a number of phenomenological models extended from the baryon (q3) and meson (q{bar q}) sectors predict bound six quark states (q6). The most probable candidate is the H dibaryon, composed of two each of the lightest three quarks (udsuds), with quantum numbers J{sup P} = 0, I = 0 and S = -2. Its mass would likely be between the deuteron mass and twice the [Lambda] (uds) mass. This dissertation describes a search for the H dibaryon conducted in a neutral beam at the Brookhaven National Laboratory's Alternating Gradient Synchrotron. In the experiment a 24.1 GeV/c proton beam struck a 1.35 interaction length platinum target producing a collimated neutral beam (62 [mu]sr at 65 mrad from the incident proton direction) which propagated through a 18 m vacuum decay tank before entering a double arm spectrometer. Approximately 20 m from the production target a 10 cm (0.15 interaction length) long active scintillator dissociator was placed in the beam.
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| Total Pages | : 7 |
| Release | : 1993 |
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Download Search for the H Dibaryon By?− Capture on the Deuteron Book in PDF, ePub and Kindle
The present status of the H-dibaryon search experiment at Brookhaven (E813) using the formation reaction through?− atomic operation on the deuteron, (?−, d){sub atom} → H n, is reported with emphasis placed on the analysis of the data collected with the 1992 slow extracted proton beam run.
| Author | : M. Anselmino |
| Publisher | : IOS Press |
| Total Pages | : 496 |
| Release | : 2008-07-14 |
| Genre | : Science |
| ISBN | : 1607503484 |
Download Strangeness and Spin in Fundamental Physics Book in PDF, ePub and Kindle
Strangeness and Spin in Fundamental Physics is dedicated to the discussion of the role played by two subtle and somehow puzzling quantum numbers, the strangeness and the spin, in fundamental physics. They both relate to basic properties of the fundamental quantum field theories describing strong and electro-weak interactions and to their phenomenological applications. In some instances, like the partonic spin structure of the proton, they are deeply correlated. The many puzzling results recently obtained by measuring several spin asymmetries have stimulated gigantic progresses in the study of the spin structure of protons and neutrons. Intense theoretical activity has discovered new features of non-perturbative QCD, like strong correlations between the spin and the intrinsic motions of quarks inside the nucleons. The purpose of this publication is that of providing a complete, updated and critical account of the most recent and relevant discoveries in the above fields, both from the experimental and theoretical sides.
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| Release | : 2005 |
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Download Search for the H Dibaryon by [Xi][sup [minus] Capture on the Deuteron Book in PDF, ePub and Kindle
The present status of the H-dibaryon search experiment at Brookhaven (E813) using the formation reaction through [Xi][sup [minus]] atomic operation on the deuteron, ([Xi][sup [minus]], d)[sub atom] [yields] H n, is reported with emphasis placed on the analysis of the data collected with the 1992 slow extracted proton beam run.
