Specific Heat of the Order-Disorder Transition in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>β</mml:mi></mml:math>Brass

Ashman, John; Handler, Paul

doi:10.1103/physrevlett.23.1008.2

Cited by 19 publications

(31 citation statements)

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“…We set the stage by discussing our results for the Gottfried sum rule (46) in table 3. The value of this integral remains unchanged in the process of transforming to the IMF as well as the subsequent leading order DGLAP evolution.…”

Section: Discussion Of Numerical Resultsmentioning

confidence: 99%

“…Σ = 2S q . Its study has lead to the proton spin puzzle as the EMC [46], SMC [47] and SLAC [48,49] measurements combined with the assumption of flavor symmetry and data from semileptonic hyperon decays indicated that Σ was unexpectedly small [11]. In addition that analysis yielded a large polarization of the strange sea in the nucleon, i.e.…”

Section: Polarized Structure Functionsmentioning

confidence: 99%

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Nucleon structures functionsin the three-flavor NJL soliton model

1999

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We study the relevance of strange degrees of freedom for nucleon structure functions.For this purpose we employ the three flavor generalization of the collective quantization approach to the chiral soliton of the bosonized Nambu-Jona-Lasinio model.Contrary to many other soliton models the hadronic tensor is tractable in this model. By applying the Bjorken limit to the hadronic tensor we extract the leading twist contributions to the nucleon structure functions at the low energy scale at which the model is assumed to approximate QCD. After transforming to the infinite momentum frame and performing the DGLAP evolution program to these structure functions we compare with available data for deep inelastic electron-nucleon scattering.

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Section: Discussion Of Numerical Resultsmentioning

confidence: 99%

Section: Polarized Structure Functionsmentioning

confidence: 99%

Nucleon structures functionsin the three-flavor NJL soliton model

1999

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“…Since the European Muon Collaboration (EMC) measured the first moment I EMC p = 0.112 (at Q 2 =3 (GeV/c) 2 ) of the proton spin structure function g p 1 [1], there has been a great deal of discussion about the spin content of the proton. An immediate and unexpected consequence of the EMC measurement was that the quark contribution to the spin of the proton was very small (∆Σ ≈ 0).…”

Section: Introductionmentioning

confidence: 99%

Hyperon semileptonic decays and quark spin content of the proton

2000

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We investigate the hyperon semileptonic decays and the quark spin content of the proton $\Delta \Sigma$ taking into account flavor SU(3) symmetry breaking. Symmetry breaking is implemented with the help of the chiral quark-soliton model in an approach, in which the dynamical parameters are fixed by the experimental data for six hyperon semileptonic decay constants. As a result we predict the unmeasured decay constants, particularly for $\Xi^0 \to \Sigma^+$, which will be soon measured and examine the effect of the SU(3) symmetry breaking on the spin content $\Delta \Sigma $ of the proton. Unfortunately large experimental errors of $\Xi^-$ decays propagate in our analysis making $\Delta \Sigma$ and $\Delta s$ practically undetermined. We conclude that statements concerning the values of these two quantities, which are based on the exact SU(3) symmetry, are premature. We stress that the meaningful results can be obtained only if the experimental errors for the $\Xi$ decays are reduced.Comment: The final version accepted for publication in Phys. Rev. D. 18 pages, RevTex is used with 4 figures include

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“…(7) Since many ofthe fluids which we plan to study are electrically conductive, the heater and thermistor cannot be in contact with the fluid.…”

Section: Design Of Sample Cell and Circuitrymentioning

confidence: 99%

High resolution calorimeter for the investigation of melting in organic and biological materials

Tanasijczuk

Oja

1978

Review of Scientific Instruments

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A high-resolution, high-sensitivity ac calorimeter has been developed to investigate the ''melting'' of organic and biological materials. The heart of this system is a simple yet very versatile sample cell which can be reused. High-temperature-resolution studies of the melting of n-octadecane and tert-butyl alcohol indicate interesting premelting and prefreezing phenomena in the specific heat capacity in these substances. With pure dipalmitoyl L-alpha-lecithin (DPL), in water, we obtain a very sharp (FWHM=0.38 degrees C) first-order phase transition showing no pretransition broadening or post-transition tails in the specific heat curves near the 41.2 degrees C transition point.

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Specific Heat of the Order-Disorder Transition inβBrass

Cited by 19 publications

References 0 publications

Nucleon structures functionsin the three-flavor NJL soliton model

Nucleon structures functionsin the three-flavor NJL soliton model

Hyperon semileptonic decays and quark spin content of the proton

High resolution calorimeter for the investigation of melting in organic and biological materials

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