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Showing 1 to 20 of 249 for “"Meson"”.
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Non-D meson anti D meson decays of the Psi'' meson(3770)
… After further background subtractions from D meson decays and particle misidentifiction and efficiency corrections no events are seen and upper limits are placed for each one of these decay channels.
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In-Medium QCD Sum Rules for omega Meson, Nucleon and D Meson
… This is exemplified for the cases of the omega meson, the nucleon and the D meson. By virtue of the sum rules, integrated spectral densities of these hadrons are linked to properties of the QCD ground state, quantified in condensates. For the cases of the omega meson and the nucleon it is …
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Many meson production in meson-nucleon collision in the chew-low formalism
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 1957
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Meson Theory of Nuclear Forces
Made available in DSpace on 2015-05-12T17:11:55Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0013478.PDF: 1641233 bytes, checksum: 9fc4279debfc1be54c93d5ed1fef31a0 (MD5) Previous issue date: 1955
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SEARCH FOR THE RARE DECAY OF A B MESON TO A K MESON AND TWO NEUTRINOS
… in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -> D(*)(npi) …
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An equation for meson states in the quark model and its application to a meson bootstrap
"A differential equation for meson states is derived from the Bethe-Salpeter equation under the conditions of the quark model. The equation is shown to imply mass relations of the form K* 2 - P2 = K2 2 - 1£ • The equation is used to attempt bootstrap calculations of the vector and pseudo-scalar …
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Exclusive Backward-Angle Omega Meson Electroproduction
Exclusive meson electroproduction at different squared four-momenta of the exchanged virtual photon, Q^2 , and at different four-momentum transfers, t and u, can be used to probe QCD’s transition from hadronic degrees of freedom at the long distance scale to quark-gluon degrees of freedom at the …
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Meson Contributions to Nucleonic Compton Scattering
Made available in DSpace on 2015-05-12T17:11:53Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0010540.PDF: 3161637 bytes, checksum: 7ec514bf4afd106870d5fe6c33ccac8c (MD5) Previous issue date: 1954
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Meson Production by Electrons in Hydrogen
Made available in DSpace on 2015-05-12T17:03:33Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0018125.PDF: 1422484 bytes, checksum: 247ee0b68bdc8c1260be3858104cb5b9 (MD5) Previous issue date: 1956
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Vector meson dominance and pion photoproduction
… theoretical treatment is given of the vector mesondominance approximation of a k2 dispersion relation for any of a large number of sets of invariant amplitudes for pion photoproduction. The resulting cross section always has a kinematic singularity; whether or not it is in the physical region …
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Dense matter in effective meson theories
… is thought to reduce to a theory in which mesons are the relevant degrees of freedom. Baryons emerge as topological solitons in such theories. Nucleon properties are well reproduced within these models--the agreement with experiment improving with the complexity of the theory.
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A Measurement of the Branching Fraction B(positive Strange D Meson Decays to Meson Positive Pion) at CLEO
I present a model-independent measurement of the ratio of branching fractions BD+s→ fp+ /BD0→K +p- by partially reconstructing the decay B0→D*+s D*- . Using 8.9fb-1 of on-resonance data collected with the CLEO II detector at CESR and the known value of BD0→K +p- , I determine …
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Meson Photo-Couplings From Lattice Quantum Chromodynamics
… operators designed to interpolate a single meson eigenstate, which are constructed as variationally optimized linear combination of meson interpolating fields within a large basis. In order to frame the results we also explore some well known phenomenology arising within the context of the …
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Photoproduction of the (Positive, Negative) D* Meson
… the photoproduction of the D('*+) (and D('*-)) meson, where D('*+) (--->) D('0)(pi)('+) and D('0) (--->) K('-)(pi)('+) (143 (+OR-) 20 events) or D('0) (--->) K(,s)(pi)('+)(pi)('-) (35 (+OR-) 11 events). The observation exploited the small D('*+)-D('0) mass difference to reduce the combinatoric …
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Determination of the Neutral B Meson and Neutral B(s) Meson Mixing Matrix Elements in 2+1 Lattice QCD
This report presents a calculation and results for the matrix elements relevant for the analysis of B0 -- B¯0 mixing using the Asqtad (light-quark) and Fermilab (heavy-quark) actions. The calculation is performed on the 2+1 MILC ensembles at three different lattice spacings, and uses staggered …
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Determination of the X(3872) Meson Quantum Numbers
… <p>Besides the well established mesons consisting of quark-antiquark pairs (qq-bar), it has been proposed that "exotic" qqq-barq-bar mesons could exist. One of the candidates for a four-quark state is the charmonium-like state X(3872) which was first observed by the Belle …
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The total muon polarization in Kμ3° meson decay
… form factor ratio will be presented. o . . 0 KL mesons, from the 31 neutral beam, decayed in vacuum in a magnetic field. The momenta of the ~ and the ~ + particles were measured by me,ans of foil spark chambers inside the magnet. A kinematic reconstruction of the KLo decay was made for each …
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