118409646
Superfluidity of hadronic matter
SummaryThe mesons in the nucleon are associated with a Bose system with an energy excitation spectrum ε(p), wherep is the corresponding momentum. This spectrum can be investigated by studying the nucleon recoil in one-meson production processes. It turns out that
$$\mathop {\lim }\limits_{p \to 0} (\varepsilon /p) \ne 0$$
. This is the Landau criterion for superfluidity. Herefrom we infer that hadronic matter is superfluid. Possible manifestations of this phenomenon in strong interactions are a bootstrap relation between the masses of mesonic and baryonic resonances, the shift of the δ-resonance in nuclei, the existence of a maximum resonance mass equivalent to an ionization point and the existence of a critical temperature of hadronic matter instead of a maximum temperature.RiassuntoI mesoni nel nucleone sono associati per mezzo di un sistema di bose con uno spettro di energie di eccitazione ε(p), dovep è l'impulso corrispondente. Si può analizzare questo spettro studiando il rinculo del nucleone nei processi di produzione di un mesone. Risulta che
$$\mathop {\lim }\limits_{p \to 0} (\varepsilon /p) \ne 0$$
. Questo è il criterio di landau per la superfluidità. Da ciò si inferisce che la materia adronica è superfluida. Possibili manifestazioni di questo fenomeno nelle interazioni forti sono una relazione di bootstrap fra le masse delle risonanze mesoniche e barioniche, lo spostamento della risonanza δ nei nuclei, l'esistenza di una massa massima della risonanza equivalente ad un punto di ionizzazione e l'esistenza di una temperatura critica della materia adronica invece di una temperatura massima.РезюмеМезоны в нуклоне связываутся с Гозе-системой с энергетическим спектром возбуждения ε(p), гдеp есть соответствующии импульс. Этот спектр может быть исследован посредством изучения отдачи нуклона в процессе рождения одного пиона. Оказывается, что
$$\mathop {\lim }\limits_{p \to 0} (\varepsilon /p) \ne 0$$
. Это представляет критерий Ландау для сверхтекучести, из которого мы делаем вывод, что адронное вещество является сверхтекучим. Возможные проявления этого явления в сильных взаимодействиях представляют: соотношения бутстрепа между массами мезонных и барионных резонансов, сдвиг δ резонанса в ядрах, существование резонансной массы, эквивалентной точке ионизации, и существование критической температуры адронного вещества вместо максимальной темпатуры.
120768053
Dips in one-pion production processes from a statistical point of view
124420576
Possible Production of 'Collapsed' Hadronic Matter in Very High-energy Nucleon-nucleon Collisions
We speculate on the possible production of "collapsed" hadrons, i.e., color-singlet, electrically uncharged (or with small integral charge) clusters of quarks and antiquarks, in very-high-energy proton-proton collisions, the intermediate states of which contain relatively large numbers of quarks $q$, antiquarks $\overline{q}$, and gluons $g$. Using a thermodynamic model, we crudely estimate the numbers and kinetic energies of the $q$, $\overline{q}$, and $g$ in the intermediatestate gas mixture, and indicate how the properties of collapsed hadrons might depend on the quantum numbers of the $q$ and $\overline{q}$. A brief discussion of experimental signatures for identification of collapsed hadrons is presented, along with mention of the consequences of possible collapsed-hadron production in the early Universe.
13881394
Classical properties of generalized coherent states: from phase-space dynamics to Bell's inequality
We review classical properties of harmonic-oscillator coherent states. Then we discuss which of these classical properties are preserved under the group-theoretic generalization of coherent states. We prove that the generalized coherent states of quantum systems with Lie-group symmetries are the unique Bell states, i.e., the pure quantum states preserving the fundamental classical property of satisfying Bell's inequality upon splitting.
123016244
Observation of new particle production by high energy neutrinos and antineutrinos
117244289
Neutrino interactions with electrons and protons : an account of an experimental program in particle physics in the 1980s
Contents: The Neutrino Beam and the E-734 Detector. Neutrino-Electron Scattering. Neutrino-Proton Elastic Scattering. Intrinsic Properties of Neutrinos. Summary.
119813214
The Search for New Families of Elementary Particles
A new particle was observed at Fermilab having a mass and lifetime that place it in a region of the elementary-particle spectrum that remains almost unexplored. Its significance is that it reveals an entirely new family, the existence of which implies that there is some hitherto unobserved property matter that distinguishes the particles in the new family from all the more familiar ones. Particle properties are reviewed in order to explain the observation of the new particle. It is suggested that a new hadron is the most likely interpretation.