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Showing 1 to 20 of 26 for “"D± 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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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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Search for CP violation in D-meson decays
Using data from the Mark III detector at the $e\sp+e\sp-$ storage ring at SPEAR, an upper limit of.30 at the 90% confidence level is set on the magnitude of the CP asymmetry $A\sb{cp}$ for the CP eigenstate $D\sp0\to K\sp+K\sp-.$ This falls within the preexisting limit of.45 @ 90% CL set by FNAL …
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Search for CP violation in D-meson decays
Using data from the Mark III detector at the e+e- storage ring at SPEAR, an upper limit of .30 at the 90% confidence level is set on the magnitude of the CP asymmetry Acp for the CP eigenstate no -+ K+ K-. This falls within the preexisting limit of .45 @90% CL set by FNAL experiment E691 using the …
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Observations of new cabibbo suppressed decays of the D meson
… 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 …
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Measurement of the relative amplitude and strong phase between antineutral D meson decaying to kaon+ resonance kaon- and neutral D meson decaying to kaon+ resonance kaon- via Dalitz plot analysis of neutral D meson decaying to kaon+ kaon- neutral pion decays
Submitted by William Weathers (weathrs2@illinois.edu) on 2012-06-07T20:27:35Z No. of bitstreams: 1 2006_naik.pdf: 5438557 bytes, checksum: 786a12eff82533d45732c80afe2d2868 (MD5)
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Amplitude Analyses of the D meson(+),Dmeson(+)(s) Going to Kaon(-)kaon(+)pion(+) and D Meson(0) Going to Kaon(o)(s)kaon(+)kaon(-) Final States
Amplitude analysis of the D+,D+s→ K-K+p+ and D0→KosK+K - final states are presented using the data collected by the Fermilab high energy photoproduction experiment E831(FOCUS), during 96--97. Our data are fit to a model consisting of a sum of Breit-Wigner amplitudes for the intermediate …
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D meson reconstruction at star using the silicon vertex tracker (svt)
… results from actual neutral and charged D-meson measurements in minimum bias Au+Au collisions at sqrt(sNN) = 200 GeV at STAR using existing silicon detectors (SVT and SSD). The measurements are performed using a secondary vertexing technique that exploits the resolution given by the silicon …
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Measurement of branching factions of d meson with final state including kk
<p>Using 818pb−1 of CLEO-c data at √s =3770 MeV, we measure precisely the branching ratios for four D+ → K+K−X hadronic channels. Our measurement improves the errors of B(D+ → K+K−π+π0) and B(D+ → φπ+π0) by factors of 10 respectively. We report first observation of the decay D+ → φρ+, as well as …
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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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Messung diffraktiver D*+- Meson Produktion in tief-inelastischer ep-Streuung und Photoproduktion bei HERA
… Messungen fuer die Produktion diffraktiver D*-Mesonen in tief-inelastischer Streuung (DIS) und Photoproduktion bei HERA vorgestellt. Die Ereignis-Topologie ist durch ep-->eXY vorgegeben, wobei das zentrale System X mindestens ein D*-Meson enthaelt und deutlich durch eine Rapiditaets-Luecke vom …
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Short-distance matrix elements for D-meson mixing for 2+1 flavor lattice QCD
… short-distance hadronic matrix elements for $D$-meson mixing with partially quenched $N_f=2+1$ lattice QCD. We use a large set of the MIMD Lattice Computation Collaboration's gauge configurations with $a^2$ tadpole-improved staggered sea quarks and tadpole-improved L\""uscher-Weisz gluons. We use …
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Analysis of the neutral D-meson decay to a neutral kaon and two neutral pions
This thesis presents a Dalitz plot analysis of D0 to K0S PI0 PI0 using the CLEO-c data set of 818 inverse picobarns of positron-electron collisions accumulated at center-of-mass energy 3.77 GeV. This corresponds to about 3 million D0-anti-D0 pairs from which we select 1260 tagged candidates with a …
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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 → …
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A search for neutral D meson decaying to kaon electron anti-electron neutrino (via mixing) at CLEO
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-11-14T17:50:29Z No. of bitstreams: 1 Sedlack.pdf: 1496994 bytes, checksum: 6d2cdc5cec1be8af3b4524acb8c1997b (MD5)
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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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Measurement of the Strong Phase Delta (Kaon Pion) Through the Decay of Quantum-Correlated Neutral D-Anti-D Meson Pairs
We exploit quantum correlations in coherent D 0D0 pairs produced at the psi(3770) resonance to measure the strong phase difference deltaKpi between D0 → K+pi- and D 0 → K-pi+ decays. Using 818 pb-1 of e+e- collisions collected by the CLEO-c detector, we report a measurement of deltaKpi …
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Heavy quark study via prompt and non-prompt strange D-meson measurements in pp and Pb¿Pb collisions with ALICE at the LHC
L'abstract è presente nell'allegato / the abstract is in the attachment
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Using Heavy Flavors To Study New Physics
… model contributions to select leptonic heavy meson decay modes. Included are calculations of soft photon contributions to a di-lepton decay of B-mesons as well as two-particle hadronic unitary contributions to the rare di-leptonic decay of the neutral D meson. Additionally, constraints are …
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Measurement of the ratios of the branching fractions [Beta](B⁰[sigma] --> D⁻[sigma][pi]⁺ [pi]⁺[pi]⁻)/[Beta](B⁰ --> D⁻[pi]⁺ [pi]⁺[pi]⁻) and [Beta](B⁰[sigma] --> D⁻[sigma][pi]⁺)/[Beta](B⁰ --> D⁻[pi]⁺ [pi]⁺[pi]⁻).
… BR and PR refer to the uncertainty on the D meson branching fractions and the production ratio fs/fd, respectively.
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