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 23 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 → …
-
Untersuchung zur Rekonstruktion von D*+- -Mesonen in Photoproduktion am H1-Detektor bei HERA
… charmed particles, especially charged excited D-mesons, are produced via the process of boson gluon fusion, their decay particles being detected in the H1 detector. In this thesis the cross section for the production of these charmed mesons is determined, which leads to a better understanding of …
-
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)
Page 1 of 2