Letteratura scientifica selezionata sul tema "Quark models"

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Articoli di riviste sul tema "Quark models"

1

EVANS, P. W., and B. A. ROBSON. "COMPARISON OF QUARK MIXING IN THE STANDARD AND GENERATION MODELS." International Journal of Modern Physics E 15, no. 03 (April 2006): 617–25. http://dx.doi.org/10.1142/s0218301306004077.

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The different interpretations of quark mixing involved in weak interaction processes in the Standard Model and the Generation Model are discussed with a view to obtaining a physical understanding of the Cabibbo angle and related quantities. It is proposed that hadrons are composed of mixed-quark states, with the quark mixing parameters being determined by the Cabibbo-Kobayashi-Maskawa matrix elements. In this model, protons and neutrons contain a contribution of about 5% and 10%, respectively, of strange valency quarks.
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Metsch, B. "Quark models⋆." European Physical Journal A 35, no. 3 (March 2008): 275–80. http://dx.doi.org/10.1140/epja/i2007-10557-4.

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BALL, R. D. "MESONS, SKYRMIONS AND BARYONS." International Journal of Modern Physics A 05, no. 23 (December 10, 1990): 4391–426. http://dx.doi.org/10.1142/s0217751x90001847.

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We review the construction of low energy effective actions for QCD expressed in terms of mesons and baryons rather than quarks and gluons. The mesons consist of quark-antiquark pairs bound by effective gluon exchange, while the baryons contain three valence quarks, also bound by effective gluon exchange, but enveloped in a meson cloud (the “sea quarks”), which may take the form of a chiral soliton. Such a “chiral quark soliton model” offers a unified approach to the various superficially dissimilar models of baryons currently popular, in particular constituent quark models, chiral bags, and Sk
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HUANG, HONGXIA, JIALUN PING, HOURONG PANG та FAN WANG. "STUDY OF NΔ AND ΔΔ RESONANCE STATES IN CONSTITUENT QUARK MODELS". Modern Physics Letters A 25, № 25 (20 серпня 2010): 2155–65. http://dx.doi.org/10.1142/s0217732310033074.

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To look for nonstrange dibaryon resonances, a systematic calculation of nucleon–nucleon scattering phase shifts of two interacting baryon clusters of quarks with explicit coupling to NΔ and ΔΔ states is done. Two phenomenological nonrelativistic quark models giving similar low-energy NN properties are found to give significantly different dibaryon resonance structures. In the chiral quark model, the dibaryon system does not resonate in the NNS waves. In the quark delocalization color screening model, the S wave NN resonances appear with nucleon size b = 0.6. There is a IJ = 12NΔ resonance stat
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PASQUINI, B., S. BOFFI, and P. SCHWEITZER. "THE SPIN STRUCTURE OF THE NUCLEON IN LIGHT-CONE QUARK MODELS." Modern Physics Letters A 24, no. 35n37 (December 7, 2009): 2903–12. http://dx.doi.org/10.1142/s021773230900111x.

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The quark spin densities related to generalized parton distributions in impact-parameter space and to transverse-momentum dependent parton distributions are reviewed within a light-cone quark model, with focus on the role of the different spin-spin and spin-orbit correlations of quarks. Results for azimuthal spin asymmetries in semi-inclusive deep inelastic scattering due to T -even transverse-momentum dependent parton distributions are also discussed.
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LAI, XIAOYU, and RENXIN XU. "QUARK-CLUSTER STARS: THE STRUCTURE." International Journal of Modern Physics: Conference Series 23 (January 2013): 213–22. http://dx.doi.org/10.1142/s2010194513011331.

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The nature of pulsar-like compact stars is still in controversy although the first pulsar was found more than 40 years ago. Generally speaking, conventional neutron stars and non-mainstream quark stars are two types of models to describe the inner structure of pulsars, with the former composed mainly of hadrons and the latter of a peculiar kind of matter whose state equation should be understood in the level of quarks rather than hadrons. To construct a more realistic model from both theoretical and observational points of view, we conjecture that pulsars could be "quark-cluster stars" which a
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Contrera, Gustavo A., Milva Orsaria, I. F. Ranea-Sandoval, and Fridolin Weber. "Hybrid Stars in the Framework of NJL Models." International Journal of Modern Physics: Conference Series 45 (January 2017): 1760026. http://dx.doi.org/10.1142/s2010194517600266.

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We compute models for the equation of state (EoS) of the matter in the cores of hybrid stars. Hadronic matter is treated in the non-linear relativistic mean-field approximation, and quark matter is modeled by three-flavor local and non-local Nambu−Jona-Lasinio (NJL) models with repulsive vector interactions. The transition from hadronic to quark matter is constructed by considering either a soft phase transition (Gibbs construction) or a sharp phase transition (Maxwell construction). We find that high-mass neutron stars with masses up to [Formula: see text] may contain a mixed phase with hadro
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Weigel, H., and J. P. Blanckenberg. "Heavy baryons with strangeness in soliton models." International Journal of Modern Physics: Conference Series 39 (January 2015): 1560088. http://dx.doi.org/10.1142/s2010194515600885.

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We present some recent results from soliton model calculations for the spectrum of baryons with a single heavy quark. The model comprises chiral symmetry for light flavors and (approximate) heavy spin–flavor symmetry for the heavy quarks. We focus on flavor symmetry breaking for strangeness degrees of freedom.
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Tadić, D., and S. Žganec. "Covariant and heavy quark symmetric quark models." Physical Review D 50, no. 9 (November 1, 1994): 5853–64. http://dx.doi.org/10.1103/physrevd.50.5853.

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ZHANG, BIN. "J/ψ PRODUCTION FROM CHARM COALESCENCE IN RELATIVISTIC HEAVY ION COLLISIONS". International Journal of Modern Physics E 16, № 07n08 (серпень 2007): 2061–65. http://dx.doi.org/10.1142/s0218301307007465.

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J/ψ production is closely related to the production of the strongly interacting Quark-Gluon Plasma (sQGP) in relativistic heavy ion collisions. To study the effects of charm quark dynamics on J/ψ production, the phase space distributions of charm and anti-charm quarks are generated using A Multi-Phase Transport (AMPT) model. These charm quarks then coalesce into J/ψ particles. The production and flow of J/ψ show strong sensitivity to final state charm interactions. The results are compared to charm quark and D meson results from the AMPT model and recent predictions from other models.
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Tesi sul tema "Quark models"

1

Gomshi, Nobary M. A. "Heavy quark fragmentation models." Thesis, Durham University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328988.

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Wambach, Achim. "Consistent application of quark models to heavy flavour physics." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386750.

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Potter, Christopher Thomas. "A search for the rare decay B⁰ (arrow tau⁺ tau⁻) at the Babar experiment /." view abstract or download file of text, 2005. http://wwwlib.umi.com/cr/uoregon/fullcit?p3181121.

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Thesis (Ph. D.)--University of Oregon, 2005.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 219-223). Also available for download via the World Wide Web; free to University of Oregon users.
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Murphy, Philip. "Nonrelativistic quark model calculation of the K-P --> [Lambda gamma] and K-P --> [Sigma]0[gamma] branching ratios." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30167.

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The radiative annihilation of K⁻p atoms to Λγ and ∑°γ is investigated using a non-relativistic harmonic oscillator quark model. A nonrelativistic reduction of the first order Feynman diagrams is performed to yield a gauge invariant interaction, which is sandwiched between three quark wave functions. Pseudoscalar and pseudovector coupling schemes are used for the strong vertex and the effects of SU(3)flavour breaking is explored. We obtain results which are in agreement with experiment for the ∑°γ but are somewhat high for the Λγ calculation.<br>Science, Faculty of<br>Physics and Astronomy, Dep
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Smith, Jason. "Quarks and antiquarks in nuclei /." Thesis, Connect to this title online; UW restricted, 2005. http://hdl.handle.net/1773/9750.

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Detmold, William. "Nonperturbative approaches to quantum chromodynamics." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phd4817.pdf.

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Makke, Nour. "Measurement of the polarization of strange quark in the nucleon and determination of quark fragmentation functions into hadrons." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00673486.

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Understanding the nucleon structure is currently one of the main challenges encountered in nuclear physics. The present work represents a contribution to the study of the nucleon structure and deals, in particular, with the study of the role of strange quarks in the nucleon. The latter can be investigated by determing the strange quark distribution in the nucleon as well as the contribution of the spins of strange quarks to the nucleon spin ($\Delta s$). This work first presents a measurement of $\Delta s$ performed via Deeply Inelastic Scattering of a muon beam off polarized proton and deuter
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Signal, Anthony Ian. "Deep inelastic scattering and bag model." Title page, abstract and contents only, 1988. http://web4.library.adelaide.edu.au/theses/09PH/09phs578.pdf.

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Irwin, Blake A. "Calculation of the meson decays of vector Œ vector + pseudoscalar using Q.C.D." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63992.

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Morales, Patrícia Soares [UNESP]. "Limite de acoplamento forte da QCD e a interação méson-méson." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/91868.

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Made available in DSpace on 2014-06-11T19:25:30Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-03Bitstream added on 2014-06-13T19:26:30Z : No. of bitstreams: 1 morales_ps_me_ift.pdf: 900348 bytes, checksum: 11b8ab9b4c422ec3a42face91d5074e6 (MD5)<br>O mecanismo de rearranjo de tubos de fluxo predito no limite de acoplamento forte da formulação Hamiltoniana da QCD na rede foi implementado num modelo de quarks constituintes e suas consequências investigadas para o espalhamento méson-méson. O rearranjo de tubos de fluxo leva a efeitos similares aos tradicionais efeitos de troca de quarks
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Libri sul tema "Quark models"

1

1944-, Le Yaouanc A., ed. Hadron transitions in the quark model. New York: Gordon and Breach Science Publishers, 1988.

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2

A, Ivanov M., ed. The quark confinement model of hadrons. Bristol [England]: Institute of Physics Pub., 1993.

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3

Mann, Robert. An introduction to particle physics and the standard model. Boca Raton: Taylor & Francis, 2010.

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Mann, Robert. An introduction to particle physics and the standard model. Boca Raton: CRC Press, 2010.

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5

Ripka, Georges. Quarks bound by chiral fields: The quark structure of the vacuum and of light mesons and baryons. Oxford: Clarendon Press, 1997.

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Experimental investigations of the proton and deuteron structure functions. Uppsala: Academia Upsaliensis, 1991.

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The spin structure of the proton. Singapore: World Scientific, 2008.

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8

An introduction to particle physics and the standard model. Boca Raton: Taylor & Francis, 2010.

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9

Bo, Andersson. The Lund model. Cambridge, U.K: Cambridge University Press, 1998.

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10

V, Anisovich V., ed. Quark model and high energy collisions. Singapore: World Scientific, 1985.

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Capitoli di libri sul tema "Quark models"

1

Metscha, B. "Quark models." In NSTAR 2007, 46–51. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-85144-8_9.

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2

Plessas, W. "Baryon Resonances in Constituent-Quark Models." In Few Body Systems, 235–46. Vienna: Springer Vienna, 2001. http://dx.doi.org/10.1007/978-3-7091-6114-2_25.

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Lieb, Elliott H. "Baryon Mass Inequalities in Quark Models." In Inequalities, 313–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-55925-9_26.

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Ortega, P. G., D. R. Entem, and F. Fernández. "Quark Models for Baryon-Baryon Interactions." In Handbook of Nuclear Physics, 1–26. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-15-8818-1_49-1.

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Valcarce, A., F. Fernández, and P. González. "NN Interaction in Chiral Constituent Quark Models." In Nuclear Dynamics: From Quarks to Nuclei, 25–36. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6014-5_3.

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Golli, B., W. Broniowski, and G. Ripka. "Baryons as Solitons in Chiral Quark Models." In Few-Body Problems in Physics ’02, 1–6. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_1.

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Stancu, Fl. "The Nucleon-Nucleon Problem in Quark Models." In Few-Body Problems in Physics ’02, 83–88. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_19.

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De Sanctis, E., A. Kaidalov, L. A. Kondratyuk, P. Rossi, N. Bianchi, P. Levi Sandri, V. Muccifora, E. Polli, and A. R. Reolon. "Deuteron Photodisintegration at Intermediate Energy and Quark Models." In Few-Body Problems in Physics, 229–35. Vienna: Springer Vienna, 1992. http://dx.doi.org/10.1007/978-3-7091-7581-1_22.

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Capstick, Simon. "Constituent Quark Models of Baryon Structure and Strong Decays." In Hadron Spectroscopy and the Confinement Problem, 311–28. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0375-6_11.

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Thomas, Anthony W. "Chiral Quark/Parton Models: The Way QCD is Realized?" In New Aspects of Nuclear Dynamics, 47–69. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4613-0547-7_2.

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Atti di convegni sul tema "Quark models"

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Santopinto, E., and R. Bijker. "Quark models." In THE 8TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS: NSTAR 2011. AIP, 2012. http://dx.doi.org/10.1063/1.3701196.

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Weber, H. J. "Chiral Quark Models." In PARTICLES AND FIELDS: Eight Mexican Workshop. AIP, 2002. http://dx.doi.org/10.1063/1.1489751.

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BARDEEN, WILLIAM A. "Top Quark Condensate Models." In In Commemoration of the 60th Birthday of M Veltman. WORLD SCIENTIFIC, 1992. http://dx.doi.org/10.1142/9789812796011_0005.

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Close, F. E. "Effective heavy quark theory: matching HQET and quark models." In Proceedings of the XXVI international conference on high energy physics. AIP, 1992. http://dx.doi.org/10.1063/1.43385.

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Isgur, Nathan. "Models of semileptonic decays." In Internatinal symposium on heavy quark physics. AIP, 1989. http://dx.doi.org/10.1063/1.38901.

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DE SANCTIS, M. "PAIR EFFECTS IN RELATIVISTIC QUARK MODELS." In Proceedings of the 9th Conference on Problems in Theoretical Nuclear Physics. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812705143_0011.

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Fiolhais, Manuel. "Electroweak amplitudes in chiral quark models." In IX HADRON PHYSICS AND VII RELATIVISTIC ASPECTS OF NUCLEAR PHYSICS: A Joint Meeting on QCD and QCP. AIP, 2004. http://dx.doi.org/10.1063/1.1843599.

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Santopinto, E., R. Bijker, J. Ferretti, and G. Galatà. "Constituent quark models for baryon spectroscopy." In 11TH CONFERENCE ON THE INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS: (CIPANP 2012). AIP, 2013. http://dx.doi.org/10.1063/1.4826816.

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Schwinn, Christian. "Top quark signatures of Higgsless models." In SUSY06: THE 14TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP, 2007. http://dx.doi.org/10.1063/1.2735215.

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Scopetta, S., A. Courtoy, F. Fratini, and V. Vento. "SIVERS FUNCTION IN CONSTITUENT QUARK MODELS." In Proceedings of the Second Workshop on Transverse Polarization Phenomena in Hard Processes. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814277785_0016.

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Rapporti di organizzazioni sul tema "Quark models"

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Langfeld, K., and M. Rho. Quark confinement in a constituent quark model. Office of Scientific and Technical Information (OSTI), July 1995. http://dx.doi.org/10.2172/96960.

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Martin, S. P. A tumbling top-quark condensate model. Office of Scientific and Technical Information (OSTI), July 1992. http://dx.doi.org/10.2172/10155865.

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Ito, Hiroshi, W. W. Buck, and F. Gross. Covariant quark model of pion structure. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/6332887.

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Martin, S. P. A tumbling top-quark condensate model. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/5167599.

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Benesh, C. J., J. T. Goldman, and G. J. Stephenson. Quark model calculations of symmetry breaking in parton distributions. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/114022.

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Kim, Y., Hyun Kyu Lee, and M. Rho. Finite-temperature corrections in the dilated chiral quark model. Office of Scientific and Technical Information (OSTI), March 1995. http://dx.doi.org/10.2172/85044.

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Roberts, C. D., K. L. Mitchell, P. C. Tandy, and R. T. Cahill. {rho}-{omega} mixing self-energy and model quark-gluon dynamics. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/166440.

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Chopra, Sailesh. Measurement of top quark top anti-quark production cross-section and search for new physics beyond the standard model. Office of Scientific and Technical Information (OSTI), January 1998. http://dx.doi.org/10.2172/1421689.

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Ji, Chueng-Ryong. Quantum chromodynamic quark model study of hadron and few hadron systems. Office of Scientific and Technical Information (OSTI), October 1990. http://dx.doi.org/10.2172/6424024.

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Fasano, C., and T. S. H. Lee. Quark compound Bag model for NN scattering up to 1 GeV. Office of Scientific and Technical Information (OSTI), January 1987. http://dx.doi.org/10.2172/6342290.

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