Observation of Narrow Structures in the P-p Analyzing Power Around 1 GeV. PDF Download
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Languages : en
Pages : 8
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The momentum dependence of the analyzing power Ay in proton-proton elastic scattering has been measured in small steps using an internal target inserted into a polarized proton beam during acceleration from 1 to 3 GeV/c. The momentum bin size ranges from 5 to 18 MeV/c. The relative uncertainty of the analyzing power, [Delta]Ay, is typically less than 0.01 for each momentum bin. Narrow structures have been observed in the two-proton invariant mass distribution of the analyzing power. 15 refs., 5 figs., 1 tab.
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Category :
Languages : en
Pages : 8
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Book Description
The momentum dependence of the analyzing power Ay in proton-proton elastic scattering has been measured in small steps using an internal target inserted into a polarized proton beam during acceleration from 1 to 3 GeV/c. The momentum bin size ranges from 5 to 18 MeV/c. The relative uncertainty of the analyzing power, [Delta]Ay, is typically less than 0.01 for each momentum bin. Narrow structures have been observed in the two-proton invariant mass distribution of the analyzing power. 15 refs., 5 figs., 1 tab.
Author: H. Shimizu
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Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
The momentum dependence of the p-p elastic analyzing power has been measured in small steps using an internal target during polarized beam acceleration from 1 to 3 GeV/c. The momentum bin size ranges from 5 to 18 MeV/c. The relative uncertainty of the analyzing power is typically less than 0.01 for each momentum bin. Narrow structures have been observed in the two-proton invariant mass distribution of the analyzing power. A brief discussion on the interpretation of the present results is also given. 11 refs., 7 figs., 1 tab.
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Category :
Languages : en
Pages :
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![Observation of a Narrow Resonance in the D[sub S][sup +] [pi][sup 0] System at 2.32 GeV/C[sup 2] with BABAR. PDF](https://books.google.com/books/content/images/frontcover/LmyiDAEACAAJ?fife=w80-h100)
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Languages : en
Pages :
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A new state with invariant mass near 2.32 GeV=c[sup 2] has been observed by the BABAR Collaboration in the inclusive D[sub s][sup +] [pi][sup 0] mass distribution using 91 fb[sup -1] of e[sup +]e[sup -] annihilation data taken at the PEP-II asymmetric-energy storage ring at energies near 10.6 GeV. The new state is narrow, with an observed width that is consistent with the experimental resolution. This narrow width combined with the quantum numbers of the final state imply that the decay is isospin-violating. The state has natural spin-parity, and its low mass suggests a J[sup P] = 0[sup +] assignment.
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Category :
Languages : en
Pages : 7
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The authors study initial-state radiation events, ee− →?{sub ISR}?+?− J/?, with data collected with the BABAR detector. They observe an accumulation of events near 4.26 GeV/c2 in the invariant-mass spectrum of?+?− J/?. Fits of the mass spectrum indicate that a broad resonance with a mass of about 4.26 GeV/c2 is required to describe the observed structure. The presence of additional narrow resonances cannot be excluded. The fitted width of the broad resonance is 50 to 90 MeV/c2, depending on the fit hypothesis.
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Category : Power resources
Languages : en
Pages : 424
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Author:
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Category :
Languages : en
Pages :
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This is a brief report on the first measurement of the continuous momentum dependence of the analyzing power in proton-proton elastic scattering during polarized beam acceleration from 1.1 to 4.4 GeV/c. The measurement was done in the KEK-PS tunnel using an internal polyethylene thread target. The momentum bin size ranges from 5 to 18 MeV/c. Statistical uncertainty of the analyzing power is typically 0.5% per momentum bin. A small narrow structure has been observed at the incident proton momentum of 1.23 GeV/c. 2 refs., 4 figs.
Author: Roberto Cherubini
Publisher: World Scientific
ISBN: 9814632996
Category :
Languages : en
Pages : 668
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Book Description
The main goal of the School is to guide the young physicists on the methods of carrying out research and to propose to them some present open problems on fundamental modern physics. The School permits the encounter and the exchange of ideas of expert scientists belonging to different areas of research in fundamental modern physics.
Author: V V Burov
Publisher: World Scientific
ISBN: 9814555665
Category :
Languages : en
Pages : 669
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Book Description
The volume of proceedings of the Xth International Seminar on High Energy Physics, Relativistic Nuclear Physics and Quantum Chromodynamics brings together reports from the major experimental collaborations at JINR, Fermilab, Brookhaven, SATURNE, Orsay, GSI Darmstadt, Riken Cyclotron Lab. KEK, SLAC, Novosibirsk, MIT Bates, IHEP USSR and summaries of the major theoretical and experimental advances made in relativistic and nuclear physics over the last two years. The focus of the volume is upon relativistic nuclear physics, but the coverage of topics is sufficiently comprehensive to include many important results of cumulative reactions, polarization phenomena in nuclear physics, non nucleon degrees of freedom in nuclei.
