J/. Psi. And. Psi. Prime Production with 800 GeV Protons PDF Download
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Category :
Languages : en
Pages : 9
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Author:
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Category :
Languages : en
Pages : 9
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Author: Matthew Scott Kowitt
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Category :
Languages : en
Pages : 248
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![Hadronic Production of J/[psi] at Large [chi]{sub F} in 800 GeV P+Cu and P+Be Collisions PDF](https://books.google.com/books/content/images/frontcover/clFsAQAACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages : 110
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The differential cross-section d[sigma]/dx[sub F] for J/[psi] production in 800 GeV proton-nucleus collisions has been measured in the kinematic range 0.30 [le] x[sub F] [le] 0.95 and x[sub F] [lt] p[perpendicular] [lt] 5 GeV through the decay mode J/[psi] [yields] [mu][sup +][mu][sup [minus]]. The nuclear dependence of J/[psi] production over this range was measured using copper and beryllium targets. The differential cross sections are in good agreement with the predictions of the symbolical parton duality model. The data show no evidence for an intrinsic charm component in the proton. The ratio of the differential cross sections for copper and beryllium shows a suppression of J/[psi] production in copper which increases with increasing x[sub F].
Author: Paul A. Draper
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Category : Collisions (Nuclear physics)
Languages : en
Pages : 438
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![A Measurement of the Ψ' [psi'] to J/ψ [J-psi] Production Ratio in 920 GeV Proton-nucleus Interactions PDF](https://books.google.com/books/content/images/frontcover/3BHKzQEACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages : 20
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Languages : en
Pages :
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FNAL E866/NuSea has made a number of measurements of J/[psi] and[psi][prime] production by 800 GeV protons on fixed targets of Be, Fe and W. Preliminary results are presented and discussed in the context of nuclear effects such as energy loss and multiple scattering of the partons, absorption of the produced c[bar c] pairs, and shadowing. Production mechanisms involving color-singlet or color-octet states for the c[bar c] pair which eventually forms a J/[psi] or[psi][prime] have implications on the strength of absorption in the nucleus. These nuclear dependence studies arc critical in furthering the authors understanding of these processes towards future measurements at RHIC and the LHC, where J/[psi] suppression is predicted to be an important signature of the creation of quark-gluon plasma in heavy-ion collisions.
![Production of J/[Psi] in 800 GeV/c P-Si Interactions PDF](https://books.google.com/books/content/images/frontcover/c3WSAQAACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages : 8
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The authors report on the analysis of high mass opposite sign dimuon states produced in pSi interactions at √s = 38.7 GeV. These data have been collected with an open geometry fixed target spectrometer in the Fermilab Experiment E771. J/[psi] and [psi](2S) total cross section sand J/[psi] x{sub f} and p{sub t} differential cross sections have been measured and compared with extrapolations from data at lower energies. Evidence for [Upsilon] meson production is also presented.
![Kinematic Distributions and Nuclear Effects of J/ψ [J-psi] Production in 920 GeV Fixed-target Proton-nucleus Collisions PDF](https://books.google.com/books/content/images/frontcover/HLrIzQEACAAJ?fife=w80-h100)
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Category :
Languages : en
Pages : 19
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Author: Ahmed F. Al-Jamel
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Category : Particles (Nuclear physics)
Languages : en
Pages : 244
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Languages : en
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We have studied the production of the J/? and associated particles using the E672/E706 spectrometer at Fermilab. Preliminary results are presented from the first run in 1987--1988 with 530 GeV/c p/? and ?/sup −/ beams on a variety of nuclear targets. The A-dependance of J/? production with /pi//sup /minus// beam was found to agree with an A/sup ?/ parametrization with /alpha/ = 0.85 /plus minus/ 0.06 for X/sub F/ > 0.1. We have found that (41 /plus minus/ 22)% of the J//psi/'s produced in the p//pi//sup +/ beam are consistent with the radiative decay /chi/ /yields/J//psi/+?. The future analysis goals of the experiment are also discussed. 10 refs., 9 figs.
