Topological theory of hadrons. I. Mesons
نویسندگان
چکیده
منابع مشابه
Excited hadrons on the lattice: Mesons
Ground-state hadron spectroscopy has been at the forefront of the studies performed by the lattice QCD community. The exponential decay behavior of the mass eigenstate contributions to Euclidean-time correlators makes extraction of the lightest state straightforward: at large time separations, the ground-state mass naturally dominates the correlator, which then displays a single exponential in ...
متن کاملTowards Understanding Spectral Degeneracies in Nonstrange Hadrons. Part I: Mesons as Hadron Strings vs. Phenomenology
The spectroscopic regularities of modern empirical data on the nonstrange mesons up to 2.4 GeV can be summarized as a systematic clustering of states near certain values of energy. It is getting evident that some unknown X-symmetry triggers the phenomenon. We perform a thorough phenomenological check of a recently proposed formula M 2 ∼ L + n, which explains the X-symmetry. A semiclassical hadr...
متن کاملIdentification of neutral B mesons using correlated hadrons.
The identification of the flavor of a neutral B meson can make use of hadrons produced nearby in phase space. Examples include the decay of “B” resonances or the production of hadrons as a result of the fragmentation process. Some aspects of this method are discussed, including time-dependent effects in neutral B decays to flavor states, to eigenstates of CP and to other states, and the effects...
متن کاملPhotoproduction of mesons from nuclei - In-medium properties of hadrons
Recent experimental results for the in-medium properties of hadrons obtained with photoproduction of mesons from nuclei are discussed. The experiments were done with the TAPS detector at the tagged photon beam of the MAMI accelerator in Mainz. Measured were the final states πoX, ηX, 2πoX, and πoπ±X for C, Ca, Nb, and Pb up to the second resonance region. The results were used for an investigati...
متن کاملM-Theory and Topological Strings–I
The RF 2g−2 terms of Type IIA strings on Calabi-Yau 3-folds, which are given by the corresponding topological string amplitudes (a worldsheet instanton sum for all genera), are shown to have a simple M-theory interpretation. In particular, a Schwinger one-loop computation in M-theory with wrapped M2 branes and Kaluza-Klein modes going around the loop reproduces the all genus string contribution...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 1983
ISSN: 0556-2821
DOI: 10.1103/physrevd.27.2445