Bibliographies thématiques / Bs meson secondary vertex

Littérature scientifique sur le sujet « Bs meson secondary vertex »

Auteur : Grafiati
Publié le 11 mars 2023

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Articles de revues sur le sujet "Bs meson secondary vertex"

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SU, FANG, YUE-LIANG WU, YI-BO YANG et CI ZHUANG. « QCD FACTORIZATION BASED ON SIX-QUARK OPERATOR EFFECTIVE HAMILTONIAN FROM PERTURBATIVE QCD AND CHARMLESS BOTTOM MESON DECAYS B(s)→ππ, πK, KK ». International Journal of Modern Physics A 25, no 01 (10 janvier 2010) : 69–111. http://dx.doi.org/10.1142/s0217751x10048044.

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The charmless bottom meson decays are systematically investigated based on an approximate six-quark operator effective Hamiltonian from perturbative QCD. It is shown that within this framework the naive QCD factorization method provides a simple way to evaluate the hadronic matrix elements of two-body mesonic decays. The singularities caused by on mass-shell quark propagator and gluon exchanging interaction are appropriately treated. Such a simple framework allows us to make theoretical predictions for the decay amplitudes with reasonable input parameters. The resulting theoretical predictions for all the branching ratios and CP asymmetries in the charmless B0, B+, Bs → ππ, πK, KK decays are found to be consistent with the current experimental data except for a few decay modes. The observed large branching ratio in B→π0π0 decay remains a puzzle though the predicted branching ratio may be significantly improved by considering the large vertex corrections in the effective Wilson coefficients. More precise measurements of charmless bottom meson decays, especially on CP violations in B → KK and Bs → ππ, πK, KK decay modes, will provide a useful test and guide us to a better understanding on perturbative and nonperturbative QCD.
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Merzlaya, A. « Open Charm Measurements at CERN SPS Energies with the New Vertex Detector of the NA61/SHINE Experiment ». KnE Energy 3, no 1 (9 avril 2018) : 154. http://dx.doi.org/10.18502/ken.v3i1.1738.

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The heavy-ion programme of the NA61/SHINE experiment at the CERN SPS has been expanded to allow precise measurements of exotic particles with short lifetime. The study of open charm meson production is a sensitive tool for new detailed investigations of the properties of hot and dense matter formed in nucleus-nucleus collisions. In particular, it offers new possibilities for studies of such phenomena as in- medium parton energy loss and quarkonium dissociation and possible regeneration, thus providing new information to probe deconfinement. A new high resolution Vertex Detector was designed for the NA61/SHINE experiment for measurements of the very rare processes of open charm production in nucleus- nucleus collisions at the SPS. It will meet the challenges of track registration and of very precise spatial resolution in primary and secondary vertex reconstruction required for the identification of
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Frajna, Eszter, et Róbert Vértesi. « Correlation of Heavy and Light Flavors in Simulations ». Universe 5, no 5 (20 mai 2019) : 118. http://dx.doi.org/10.3390/universe5050118.

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The ALICE experiment at the Large Hadron Collider (LHC) ring is designed to study the strongly interacting matter at extreme energy densities created in high-energy heavy-ion collisions. In this paper we investigate correlations of heavy and light flavors in simulations at LHC energies at mid-rapidity, with the primary purpose of proposing experimental applications of these methods. Our studies have shown that investigating the correlation images can aid the experimental separation of heavy quarks and help understanding the physics that create them. The shape of the correlation peaks can be used to separate the electrons stemming from b quarks. This could be a method of identification that, combined with identification in silicon vertex detectors, may provide much better sample purity for examining the secondary vertex shift. Based on a correlation picture it is also possible to distinguish between prompt and late contributions to D meson yields.
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Thèses sur le sujet "Bs meson secondary vertex"

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Dwyer, Lisa Bernadette. « Testbeam studies on the LHCb vertex locator modules and a measurement of the mass of the reconstructed Bs meson ». Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526894.

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Ruzza, Benedetto Di. « Aggiornamento delle funzioni di monitoring online per il nuovo Silicon Vertex Tracker dell'esperimento CDF al Tevatron ». Doctoral thesis, 2005. https://www.openaccessrepository.it/record/74346.

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"Aggiornamento delle funzioni di monitoring online per il nuovo Silicon Vertex Tracker dell'esperimento CDF al Tevatron" SPYMON: the Real Time Online Monitorig Package for the SVT trigger system, implemented in the CDFII Detector during the SVT Upgrade Project in 2004-2005. Benedetto Di Ruzza Master's Degree Thesis. Supervisors: Prof.ssa Lucia Sorrentino Zanello and Dott. Marco Rescigno
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Rapports d'organisations sur le sujet "Bs meson secondary vertex"

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De Cecco, Sandro. Measurement of relative branching fractions for $D^{0}$ meson Cabibbo suppressed hadronic decays, from the CDF secondary vertex trigger sample at the Tevatron collider. Office of Scientific and Technical Information (OSTI), janvier 2003. http://dx.doi.org/10.2172/1369260.

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