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Relevant bibliographies by topics / Pion-proton interactions

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Academic literature on the topic 'Pion-proton interactions'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Pion-proton interactions"

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Degtyarenko, P. V., E. A. Doroshkevich, A. A. Kurzenkov, G. A. Leksin, A. V. Stavinsky, and A. V. Vlassov. "Proton-pion and two- pion correlations in eA interactions." Zeitschrift für Physik A Hadrons and Nuclei 357, no. 4 (December 1997): 419–24. http://dx.doi.org/10.1007/s002180050261.

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Ahmad, Tufail. "CHARACTERISTICS OF PARTICLES PRODUCED IN HADRON-NUCLEUS COLLISIONS." JOURNAL OF ADVANCES IN PHYSICS 6, no. 1 (November 1, 2014): 1066–71. http://dx.doi.org/10.24297/jap.v6i1.1825.

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A detailed study on mean multiplicities of secondary charged particles is presented. The average number of grey, black and heavy particles are found to be independent of energy in proton-nucleus interactions whereas for pion-nucleus collisions the data deviates from its independence with energy. The ratio of mean number of charged particles produced in pion-nucleus collisions to its number in proton-nucleus interactions at almost the same energy is found to be similar at different energies.

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SIBIRTSEV, A. "STRANGENESS PRODUCTION." International Journal of Modern Physics E 18, no. 02 (February 2009): 271–80. http://dx.doi.org/10.1142/s021830130901229x.

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The general features of strangeness production in pion-proton and proton-proton collisions are discussed. Systematic analysis of the p+p data allows to conclude that the dynamics of strangeness production at high energies is dominated by the pion exchange mechanism. That actually explains similarities between pion and proton induced reactions. Among many others features the excitation of baryon resonances coupled to strangeness is most prominent observation. However at low energies the p+p interactions allow as well for the vector meson and strange meson exchanges. The question is whether such distinctive picture of the strangeness production in proton collisions is appropriate or not? I will propose how this point can be tested with polarization measurement, which will be done in near future.

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MESSCHENDORP, J. G. "FEW-NUCLEON STUDIES AT INTERMEDIATE ENERGIES." Modern Physics Letters A 24, no. 11n13 (April 30, 2009): 810–15. http://dx.doi.org/10.1142/s0217732309000061.

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Observables in proton-deuteron scattering are sensitive probes of the nucleon-nucleon interaction and three-nucleon force effects. Several facilities, including the KVI, allow a detailed study of few-nucleon interactions below the pion-production threshold exploiting polarized proton and deuteron beams. In this contribution, some recent results are discussed and interpreted exploiting rigorous Faddeev calculations. Furthermore, experimental inconsistencies between two measurements of the cross section in elastic proton-deuteron scattering at 135 MeV/nucleon are reviewed.

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Machado, M. V. T. "Investigating the Soft Processes within the QCD Color Dipole Picture." Ukrainian Journal of Physics 64, no. 8 (September 18, 2019): 705. http://dx.doi.org/10.15407/ujpe64.8.705.

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We consider the QCD parton saturation models to describe the soft interactions at the high-energy limit. The total and elastic cross-sections, as well as the elastic slope parameter, are obtained for proton-proton and pion-proton collisions and compared to recent experimental results.

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MAI, MAXIM, PETER C. BRUNS, and ULF-G. MEIßNER. "PION PHOTOPRODUCTION IN A GAUGE-INVARIANT CHIRAL UNITARY FRAMEWORK." International Journal of Modern Physics: Conference Series 26 (January 2014): 1460075. http://dx.doi.org/10.1142/s2010194514600751.

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We investigate pion photoproduction off the proton in a manifestly gauge-invariant chiral unitary extension of chiral perturbation theory. In a first step, we consider meson-baryon scattering taking into account all next-to-leading order contact interactions. The resulting low-energy constants are determined by a fit to s-wave pion-nucleon scattering and the low-energy data for the reaction π-p → ηn. Having determined the low-energy constants, we then analyse the data on the s-wave multipole amplitudes E0+ of pion and eta photoproduction. These are parameter-free predictions, as the two new low-energy constants are determined by the neutron and proton magnetic moments.

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PALCZEWSKI, TOMASZ JAN. "PION PRODUCTION MEASUREMENT IN NA61/SHINE EXPERIMENT." International Journal of Modern Physics A 26, no. 03n04 (February 10, 2011): 754–56. http://dx.doi.org/10.1142/s0217751x11052748.

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This paper presents one of the physics goals of the NA61/SHINE experiment: measurements of hadron production needed for neutrino (T2K) and cosmic-ray (Pierre Auger and KASKADE) experiments. Preliminary results from the proton-Carbon interactions at 31 GeV/c for the T2K experiment at J-PARC are presented. Knowledge of pion and kaon production is important for improving the accuracy of neutrino flux simulations. Three different methods of the pion spectra extractions are presented. Finally, preliminary differential cross section dsigma/ dp in several intervals of emission angles of charged pion in p + C interactions at 31 GeV/c.

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EL-METWALLY, KHALED A., TAREK I. HAWEEL, and MAHMOUD Y. EL-BAKRY. "A UNIVERSAL NEURAL NETWORK REPRESENTATION FOR HADRON–HADRON INTERACTIONS AT HIGH ENERGY." International Journal of Modern Physics C 11, no. 03 (May 2000): 619–28. http://dx.doi.org/10.1142/s0129183100000535.

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An efficient neural network (NN) has been designed to simulate the hadron–hadron interaction at high energy. Two cases have been considered simultaneously, the proton–proton (p–p) and the pion–proton (π-p) interactions. The neural network has been trained to produce the charged multiplicity distribution for both cases based on samples from the overlapping functions. The trained NN shows a good performance in matching the trained distributions. The NN is then used to predict the distributions that are not present in the training set and matched them effectively. The robustness of the designed NN in the presence of uncertainties, in the overlapping functions has been demonstrated.

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BARROS, C. C., and Y. HAMA. "ANTIHYPERON POLARIZATION IN HIGH-ENERGY INCLUSIVE PROCESSES." International Journal of Modern Physics E 17, no. 02 (February 2008): 371–92. http://dx.doi.org/10.1142/s0218301308006144.

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We propose a model for the antihyperon polarization in high-energy proton-nucleus inclusive reactions, based on the final-state interactions between the antihyperons and other produced particles (predominantly pions). To formulate this idea, we use the previously obtained low-energy pion-(anti-)hyperon interaction using effective chiral Lagrangians, and a hydrodynamic parametrization of the background matter, which expands and decouples at a certain freezeout temperature.1.

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Gutierrez, T. D., and R. Vogt. "Asymmetries between strange and antistrange particle production in pion–proton interactions." Nuclear Physics A 705, no. 3-4 (July 2002): 396–432. http://dx.doi.org/10.1016/s0375-9474(02)00658-9.

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Dissertations / Theses on the topic "Pion-proton interactions"

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Yang, Hao. "Diffractive production of pion-f1 in pion-proton interactions at COMPASS (CERN)." Diss., lmu, 2012. http://nbn-resolving.de/urn:nbn:de:bvb:19-150065.

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McAlister, John. "Triple proton coincidences following pion absorption in helium." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/27985.

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An experimental investigation of the absorption reaction ⁴He(π⁺,ppp) has been undertaken on the M11 beamline at the TRIUMF cyclotron. Positive pions at an average kinetic energy of 165 MeV were directed onto a cylindrical liquid 4He target and the outgoing protons were measured by a combination of two time-of-flight arrays and two plastic scintillator telescopes. A description of the apparatus, experimental technique and calibration is presented. Results from triple proton coincidences at a single orientation of three of the detectors are discussed. Their angular settings with respect to the pion beam were 40°, 136° and —55°. Comparisons are made with Monte-Carlo simulations of three and four body phase spaces. Identification of a quasi-free three nucleon absorption mode is made for the first time at this energy. An integrated cross-section for this process is determined (σQ₃N = 4.4 ± 0.6mb). The quantitative agreement between these results and those of another recent experiment¹ indicate that a small fraction(≈10%) of the coincidences could be due to a two step absorption mechanism. ¹Backenstoss et al. Phys. Rev. Lett 61:923(1988)
Science, Faculty of
Physics and Astronomy, Department of
Graduate

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Mebarki, Noureddine. "Large [transverse momentum] direct photon production by [pion minus, pion plus], [proton and anti-proton] beams in perturbative quantum chromodynamics." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=65946.

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Yang, Hao [Verfasser], and Martin [Akademischer Betreuer] Faessler. "Diffractive production of pion-f1 in pion-proton interactions at COMPASS (CERN) / Hao Yang. Betreuer: Martin Faessler." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2012. http://d-nb.info/1028191502/34.

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Mora, Corral Maria Jesus. "Production de photons directs et de mésons neutres à grande impulsion transverse lors de collision proton et pion sur noyau à 160 GeV." Nantes, 2002. http://www.theses.fr/2002NANT2030.

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Depuis 1996 l'accélérateur SPS (Super Proton Synchroton) au CERN permet d'étudier de collisions d'ions lourds à 17,3 GeV par nucléon où, selon une estimation de la densité d'énergie atteinte, une phase partonique thermalisée peut avoir lieu. Les signatures expérimentales de la création d'un plasma de quarks et de gluons (QGP), sont basées sur la mesure des observables qui sont modifiées par rapport à une réaction où la création d'une telle phase n'est pas possible. Une de ces signatures est la production thermique des photons pendant la phase partonique ; cette contribution s'ajoute à deux autres sources de photons : la création dans les processus durs et la décroissance des mésons neutres. La collaboration WA98 a mesuré le spectre des photons directs ce qui comprend les photons thermiques et durs, dans les collisions centrales plomb sur plomb à 158 AGeV. Les conclusions sur l'éventuelle origine thermique de ces photons nécessite la mesure de la production de photons durs dans les premières étapes de la collision. .
Since 1996, the SPS accelerator (Super Proton Synchrotron) at CERN allows one to study heavy ion collisions at 17. 3 GeV per nucleon. According to an estimation of the energy-density reached, a partonic thermalized phase can be created. The experimental signatures for the creation of a quark gluon plasma (QGP) are based on measurable observables which are expected to be modified as compared to a reaction where the creation of such a phase is not possible. .

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White, Glen R. "Tests of perturbative and non-perturbative QCD from identified proton, kaon and pion studies in deep inelastic scattering ep interactions at HERA." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369500.

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Goy, Jérôme. "Mesures des observables tensorielles dans la réaction H(p,d)pion pour des énergies comprises entre 580 et 1300 MeV et stabilité des systèmes borroméens." Université Joseph Fourier (Grenoble), 1997. http://www.theses.fr/1997GRE10019.

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L'essentiel du travail de cette these se rapporte a la mesure des observables tensorielles de polarisation dans la reaction h(p,d)pion pour des energies comprises entre 580 et 1300 mev. Ces observables sont obtenues en mesurant la polarisation des protons incidents et la polarisation tensorielle des deutons de recul par le polarimetre polder. Les resultats concernant les pouvoirs polarisants et les coefficients de transfert de spin de cette reaction apportent des contraintes nouvelles sur les analyses en ondes partielles et permettent d'acceder a une meilleure comprehension du processus d'absorption du pion pour des energies superieures au pic d'excitation de la resonance delta. La mesure du pouvoir d'analyse vectoriel fait egalement ressortir une structure autour de l'energie centre de masse de 2. 38 gev qui n'est pas reproduite par les analyses en ondes partielles. L'etude detaillee des erreurs systematiques associees aux mesures de polarisation du deuton servira aussi dans l'analyse d'une experience de diffusion elastique electron-deuton qui se monte actuellement au tnjaf (usa) et qui doit permettre d'isoler les facteurs de forme de charge et quadrupolaire du deuton a haut moment de transfert. La seconde partie de la these se refere a un travail effectue sur les systemes borromeens. L'objectif etait de determiner par une methode variationnelle, le jeu des constantes de couplage des potentiels d'interaction qui autorise la stabilite a trois corps sans qu'aucun sous-systeme a deux corps ne puisse etre lie

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Michaud, Yonnel. "Etude phénoménologique de la réaction d'échange de charge (pi)-p -> (pi)[n à haute énergie]." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10097.

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La presente these est consacree a l'etude de la reaction d'echange de charge pion negatif proton donne pion nul neutron. Cette reaction fait partie des processus quasi-elastiques, caracterises par de petits moments transferes, et donc non interpretables par la chromodynamique quantique. Le modele de glauber, utilise avec succes dans le cadre de la diffusion elastique, est exploite ici pour l'etude de la reaction d'echange de charge. Une interaction effective entre quarks, incluant un terme central et un terme spinorbite, est employee afin de rendre compte de l'echange du meson rho. Les resultats obtenus permettent de conclure a la nature diffractive de la reaction etudiee, mais ne permettent pas de determiner avec precision les rayons moyens des densites de quarks interagissants

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Hadj, Henni Ahmed. "isolation des photons de grande impulsion transverse dans les collisions proton+proton à 200 GeV dans l'expérience PHENIX au RHIC." Phd thesis, Université de Nantes, 2007. http://tel.archives-ouvertes.fr/tel-00137654.

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Les collisions d'ions lourds ultra-relativistes permettent d'atteindre des conditions expérimentales extrêmes afin de mettre en évidence un nouvel état de la matière. Cet état, qui aurait prévalu au premier instant de notre univers d'après la théorie du Big Bang, est appelé Plasma de Quarks et de Gluons (PQG). L'expérience PHENIX, un des points d'interaction du collisionneur RHIC au Laboratoire National Brookhaven (USA), a pour objectif d'étudier les traces laissées par le PQG. Les photons insensibles à l'interaction forte représentent alors pour les physiciens un des outils privilégiés de prospection. Les photons gardent donc intacte toute information provenant de la collision. En outre ils sont émis durant toutes les phases de la réaction, phase de formation, phase d'équilibre, phase mixte PQG/hadrons, phase de gaz hadronique jusqu'à l'hadronisation complète du système (freeze-out). La difficulté réside dans la séparation de toutes ces sources. Dans ce mémoire, ce sont les photons directs à valeurs élevées en impulsion transverse émis par processus partoniques durs qui nous intéresse. Dans ce domaine en impulsion, le bruit dû à d'autres sources photoniques (notamment la décroissance électromagnétique du pion neutre) est diminué. Le travail de cette thèse se focalise sur des systèmes légers p+p qui permettrons une comparaison à des systèmes plus lourds Au+Au où la formation du PQG est supposée. Également une nouvelle méthode (SICA, Spectroscopic Isolation Cut Analysis) de différentiation des diverses sources photoniques est présentée. Le résultat principal, en plus d'autres spectres en impulsion transverse, est une nouvelle référence pour le taux de production de photons directs dans les collisions p+p à 200 GeV. Le spectre extrait par SICA est comparé aux résultats d'autres analyses de la sonde photonique ainsi qu'aux calculs pQCD.

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Tolba, Tamer [Verfasser]. "Experimental investigation of double-pion production in proton-proton interactions / von Tamer Tolba." 2010. http://d-nb.info/1009745921/34.

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Books on the topic "Pion-proton interactions"

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Mörtsell, Anders. Neutral pion production in proton-proton collisions close to the kinematical threshold. Uppsala: Academia Upsaliensis, 1995.

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Conference papers on the topic "Pion-proton interactions"

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Mokhov, N. V., and S. I. Striganov. "Model for pion production in proton-nucleus interactions." In The workshop on physics at the first muon collide r and at the front end of a muon collider. ASCE, 1998. http://dx.doi.org/10.1063/1.56242.

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Tolba, T., and WASA-at-COSY Collaboration. "Double pion production in proton-proton interactions at Tp=1.4 GeV." In THE 8TH INTERNATIONAL WORKSHOP ON THE PHYSICS OF EXCITED NUCLEONS: NSTAR 2011. AIP, 2012. http://dx.doi.org/10.1063/1.3701241.

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GIANI, SIMONE, VLADIMIR IVANCHENKO, JAAP PANMAN, and VLADIMIR GRICHINE. "GEANT4 PARAMETRIZATION AND MODELING OF PION PRODUCTION IN PROTON-NUCLEUS INTERACTIONS BASED ON HARP EXPERIMENTAL DATA: INCIDENT PROTON MOMENTA ARE FROM 3 GEV/C TO 12.9 GEV/C." In Proceedings of the 10th Conference. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812819093_0130.

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MEIER, RUDOLF. "PION–PROTON SCATTERING AT TRIUMF AND PSI." In Proceedings of the 7th International Workshop on Production, Properties and Interaction of Mesons. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812791351_0055.

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LANG, MICHAEL. "RESULTS OF THE HELICITY-DEPENDENT DOUBLE-PION PHOTOPRODUCTION ON THE PROTON AT MAMI." In Proceedings of the 7th International Workshop on Production, Properties and Interaction of Mesons. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812791351_0054.

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HERPAY, T., P. FORGACS, and P. KOVACS. "MASSIVE SCALAR SELF-INTERACTION IN CURVED BACKGROUND SPACE-TIME AND ITS APPLICATION TO PROTON-PION INTERACTION." In Proceedings of the MG12 Meeting on General Relativity. WORLD SCIENTIFIC, 2012. http://dx.doi.org/10.1142/9789814374552_0075.

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Murphy, Sebastien, B. S. Acharya, Maury Goodman, and Naba K. Mondal. "Measurement of charged pion cross section in proton carbon interaction at 30 GeV with the NA61∕SHINE apparatus." In 12TH INTERNATIONAL WORKSHOP ON NEUTRINO FACTORIES, SUPERBEAMS, AND BETABEAMS: NuFact10. AIP, 2011. http://dx.doi.org/10.1063/1.3644305.

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Reports on the topic "Pion-proton interactions"

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Dehnhard, D. Pion- and proton-nucleus interactions at intermediate energy. Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/7234671.

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Dehnhard, D. Pion- and proton-nucleus interactions at intermediate energy. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/7368728.

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Lebedev, Andrey V. Ratio of Pion Kaon Production in Proton Carbon Interactions. Office of Scientific and Technical Information (OSTI), May 2007. http://dx.doi.org/10.2172/948174.

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Experimental studies of the quark-gluon structure of nucleons and nuclei and of pion- and proton-nucleus interactions. Progress report, April 1, 1994--March 31, 1997. Office of Scientific and Technical Information (OSTI), October 1996. http://dx.doi.org/10.2172/465875.

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