Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"D mesons"”.
-
Photoproduction of D± mesons
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2011-06-01T18:55:09Z No. of bitstreams: 1 1990_lingel.pdf: 15834105 bytes, checksum: cc0ff01cb45621ea6a8d9f5c978cafaf (MD5)
-
Photoproduction of D(+,-) mesons
U of I Only
-
Diffractive hadronic production of D mesons
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T20:09:28Z No. of bitstreams: 1 1980_mackay.pdf: 2689452 bytes, checksum: cee9b85e5c3e41a9222515dc68e61aed (MD5)
-
Four-body semileptonic decays of D mesons
Submitted by Carolyn Rauber (crauber2@illinois.edu) on 2012-01-20T18:29:01Z No. of bitstreams: 1 1993_culbertson.pdf: 4021258 bytes, checksum: 20c8b29e5b491da7cac693bfa4beef66 (MD5)
-
Studies of the Semileptonic Decays of D Mesons
We present new measurements of the branching ratios and decay distributions for the decays D+ → K¯ *0ℓ+nuℓ. We observe an asymmetry in the K¯*0 angular decay distribution that we interpret as evidence for a previously unobserved s-wave K-pi+ amplitude that interferes with the …
-
Direct measurement of the decays of charmed D mesons
Charmed D mesons produced in the decay of the t/1(3770) are observed by the Mark III detector at SPEAR. A new technique is applied to these data to derive D branching fractions which do not rely on the measurement of D production cross sections. Measurements are presented for three decay modes of …
-
First measurement of the gluon polarisation in the nucleon using D mesons at COMPASS
… and <br>is then tagged by detecting the charmed mesons in the final state. <br>This approach is used in this thesis and results in a theoretically very clean sample of PGF events, assuming that the intrinsic charm content in the nucleon is negligible. <br>Since the charm tagging of the PGF …
-
A Search for CP Violation in and a Dalitz Analysis of Neutral D Mesons Decaying to Pions, Antipions, and Neutral Pions in CLEO II.V
Using the 9fb-1 data sample collected with the CLEO II.V detector at the Cornell Electron Storage Ring, we study the resonant substructure of the Cabibbo suppressed decay D 0 → pi+pi-pi 0. We observe significant contributions from the rho- pi+, rho+pi-, rho 0pi0, and non-resonant channels, and …
-
A search for CP violation in and a Dalitz analysis of neutral D mesons decaying to pions, antipions, and neutral pions in CLEO II.V
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-26T22:56:52Z No. of bitstreams: 1 Plager.pdf: 17514166 bytes, checksum: 27b1713aca77a4cc45067c9293b881ef (MD5)
-
Measurement of the D*+- cross-section at HERMES
… are identified through the detection of D^{*+/-} mesons which are produced in the fragmentation of charm quarks. The D^{*+/-} mesons are reconstructed in the decay chain D^{*+} o D^0 pi^+_s o ( K^- pi^+ ) pi^+_s with the Delta M method. The total cross-section for the electroproduction of D^{*+/-} …
-
Production of Neutral D (1863) Mesons in 217 Gev/c Negative Pion Proton Interactions
… search for the hadronic production of charmed D mesons. A 217 Gev (pi)('-) beam was incident on a liquid hydrogen target. The trigger required a slow recoil proton in coincidence with a muon. A total of 26 (+OR-) 8 neutral D mesons were observed through their KO(pi)('+)(pi)('-) decay mode. The …
-
Study of D-star mesons produced in electron positron annihilations at 4.14 GeV center of mass energy
Charmed D* mesons produced in e+e-annihilations at a center of mass energy of 4.14 GeV are observed by the Mark III detector at SPEAR. The recoil mass spectrum of the D mesons is used to extract the branching fractions of the charged and neutral D*. Measurements are presented for the two decay …
-
Search For Cp Violation In Singly Cabibbo-Suppressed Charm Decays
… (SCS) weak decays of charged D mesons is predicted in the Standard Model (SM) to have asymmetries on the order of $10^{-3}$. $CP$ violation has not yet been observed in the Charm sector; however, the BaBar experiment now has extremely large data samples of charged D mesons which …
-
Search for semileptonic decays of photoproduced charmed mesons
… a search for photoproduction of charmed D mesons has been done using photons of 100 to 300 GeV. The reaction considered was [equation] s No statistically significant evidence for D production is observed based on the Ksnpi± mass spectrum. The sensitivity of the search is commensurate with …
-
Analysis of Neutral D Meson Two-Body Decays to a Neutral Kaon and a Neutral Pion
Decays of neutral D mesons to final states containing K + π's could provide evidence for CP-violation from a source not accounted for in the Standard Model. Due to the interference between Cabibbo-favored and Cabibbo-suppressed transitions, a decay rate asymmetry of D0 → K0S π0 compared to D0 → …
-
Open and Hidden Charm Mesons at Finite Temperature from Anisotropic Lattice QCD
… study the dissociation of open and hidden charm mesons. Lattice QCD provides a non-perturbative means of studying the spectral quantities of charmed mesons. The suppression of J= in medium is widely considered to be a signal for deconfinement. I will use J= to study the heavy quark diffusion …
-
Electron-Muon Correlations in Proton+Proton and Deuteron+Gold Collisions at PHENIX
… pairs result from the semileptonic decay of D mesons, which come from correlated charm pairs. The pairs are measured at forward rapidity, with ∣η∣ < 0.5 for the electron and 1.4 < ∣η∣ < 2.1 for the muon. Electron-muon pairs exhibit a characteristic peak at Δφ = π in the azimuthal distribution …
-
Photoproduction of the D*±
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-20T17:49:24Z No. of bitstreams: 1 1980_avery.pdf: 5040740 bytes, checksum: 110e9ff5e1d51ec57e8114affc3b4fcd (MD5)
-
Production of D(1863) mesons in 217 Gev/c pi-minus proton interactions
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-17T16:29:14Z No. of bitstreams: 1 1980_bender.pdf: 5325125 bytes, checksum: 7b80525ab8d4640846d90c1bf3feda8d (MD5)
-
Observations of new cabibbo suppressed decays of the D meson
"We have searched for new decay modes of the charmed D meson using the Mark III detector at the SPEAR e+e-storage ring. Observations of four new decay modes are presented along with upper limits for three others We have measured a cross section times branching ratio of .035 +-.008 +-.004 nb for the …
Page 1 of 2