1,729,324 research outputs found
HD 4370/ PSYCH 4370/ COGST 4500/ LING 4450 Course Syllabus - Spring 2009
No full textHD 4370/ PSYCH 4370/ COGST 4500/ LING 4450 Language Development Lab Course, Course Syllabus, Instructor B. Lust, Spring 200
Hendrix, Alan Wayne, 428-88-4450
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/391778Surname: HENDRIX. Given Name(s) or Initials: ALAN WAYNE. Military Service Number or Last Known Location: 428-88-4450. Missing, Wounded and Prisoner of War Enquiry Card Index Number: SEA-5332.209128
Item: [2016.0049.24071] "Hendrix, Alan Wayne, 428-88-4450
Heavy pentaquark states Pc(4380) and Pc(4450) in the J/ψ production induced by pion beams off the nucleon
No full textAbstractIn this study, we investigate the J/ψ production induced by pion beams off the nucleon, particularly the heavy pentaquarks Pc(4380) and Pc(4450) in intermediate states, based on a hybridized Regge model. The process involving ρ and π meson exchange in the t channel is considered as background, and the heavy pentaquark exchange is included in the s channel. The coupling constants such as the ρNN and πNN vertices are taken from the NN potentials, whereas those for the J/ψρπ and J/ψππ vertices are determined by using experimental data based on the branching ratios. In order to estimate the Pc(4380) and Pc(4450) coupling constants, we use the experimental upper limit on the total cross section as a guide for the πN→J/ψN reaction. The background total cross section is the order of 10−4–10−3 nb. In the vicinity of the heavy pentaquark masses, the total cross section reaches about 1 nb
Block Card 4450 Holly Hill Drive
No full textThis image was produced by the Auditor's Office in Lucas County, Ohio for tax assessment purposes. Associated dates are approximate. Descriptive terms related to this photograph include: 4450 Holly Hill Drive (Toledo, Ohio) | Glen Ellyn Park (Toledo, Ohio) | South Toledo Area (Toledo, Ohio) | Dutch Colonial Style | Side gabled | Dwellin
Studying the P_c(4450) Resonance in J/psi Photoproduction Off Protons
No full textThe LHCb has reported the observation of a resonancelike structure, the Pc(4450), in the J/ψ p
invariant masses. In our work, we discuss the feasibility of detecting this structure in J/ψ photoproduction,
e.g. in the measurements that have been approved for the experiments in Hall A/C and
in Hall B with CLAS12 at JLab. Also the GlueX Collaboration has already reported preliminary
results. We take into account the experimental resolution effects, and perform a global fit to world
J/ψ photoproduction data in order to study the possibility of observing the Pc(4450) signal in future
JLab data. We present a first estimate of the upper limit for the branching ratio of the Pc(4450) into
the J/ψ p channel, and we study the angular distributions of the differential cross sections. This
will shed light on the nature and couplings of the Pc(4450) structure in the future photoproduction
experiments
Studying the Pc(4450) resonance in J/psi photoproduction off protons
No full textA resonancelike structure, the Pc(4450), has recently been observed in the J/ψ p spectrum by the LHCb Collaboration. We discuss the feasibility of detecting this structure in J/ψ photoproduction in the CLAS12 experiment at JLab. We present a first estimate of the upper limit for the branching ratio of the Pc(4450) to J/ψ p. Our estimates, which take into account the experimental resolution effects, predict that it will be possible to observe a sizable cross section close to the J/ψ production threshold and shed light on the Pc(4450) resonance in the future photoproduction measurements
Studying the resonance in photoproduction off protons
No full textA resonance-like structure, the P(4450), has recently been observed in the J/ p spectrum by the LHCb collaboration. We discuss the feasibility of detecting this structure in J/ photoproduction in the CLAS12 experiment at JLab. We present a first estimate of the upper limit for the branching ratio of the P(4450) to J/ p. Our estimates, which take into account the experimental resolution effects, predict that it will be possible to observe a sizable cross section close to the J/ production threshold and shed light on the P(4450) resonance in the future photoproduction measurements
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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