Výsledky vyhledávání - "CKM matrix matrix"

Penguin diagrams, charmlessBdecays, and the 'missing charm puzzle'

Autor: Gaby Ostermaier, Alexander Lenz, Ulrich Nierste

Publikováno v: Physical review / D 56(11), 7228-7239 (1997). doi:10.1103/PhysRevD.56.7228
Scopus-Elsevier

We calculate the contributions of penguin diagrams with internal u or c quarks to various inclusive charmless B-decay rates. Further we analyze the influence of the chromomagnetic dipole operator Q_8 on these rates. We find that the rates correspondi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3fec7bbdedf4f5497e200375dd58834
https://doi.org/10.1103/physrevd.56.7228

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Measurement of CKM elements and the unitarity triangle

Autor: Golob, Bostjan, Belle Collaboration

Publikováno v: 130-140 (2003).
23rd International Conference on Physics in Collision, PIC 2003, Zeuthen, Germany, 2003-06-26-2003-06-28

An overview of experimental determinations of different CKM elements is given with an emphasis on |Vub| and |Vcb| extraction. Measurements are compared to the Standard Model predictions and constraints on the unitarity triangle, arising from combinat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1108::9c3b379da9aa5fa80857b22c2fb88455
https://bib-pubdb1.desy.de/record/308166

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Autor: Mitaroff, Winfried A., DELPHI Collaboration

Publikováno v: 396-398 (2003).
23rd International Conference on Physics in Collision, PIC 2003, Zeuthen, Germany, 2003-06-26-2003-06-28

The e-e+ collider LEP, running at sqrt{s} = m(Z0), has been a copious source of b-hadrons produced in decays Z0 -> b \b. We present recent studies using up to 4*10^6 hadronic Z0 decays acquired by the DELPHI detector between 1992 and 2000. They rely

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1108::c779b638d86a822a726b48b1a32e647e
https://bib-pubdb1.desy.de/record/308200

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Search for $\mathrm{B^0_s - \overline{B^0_s}}$ oscillations with a charge dipole technique at SLD

Autor: Thom, Julia

Publikováno v: Hamburg : Deutsches Elektronen-Synchrotron, DESY 180 pp. (2002). doi:10.3204/DESY-THESIS-2002-006 = Dissertation, Universität Hamburg, 2002

Universität Hamburg, Diss., 2002; 180 pp., (2002). doi:10.3204/DESY-THESIS-2002-006
Published by Deutsches Elektronen-Synchrotron, DESY, Hamburg

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::956290bb82ff2841b28e7c0377b84012
https://bib-pubdb1.desy.de/record/288195

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Theoretical studies of exclusive rare B decays in the standard model and supersymmetric theories

Autor: Safir, Abdelkader Salim

Universität Hamburg, Diss., 2002; 126 pp. (2002). = Universität Hamburg, Diss., 2002
We calculate the independent helicity amplitudes in the decays $B \to K^* \ell^+ \ell^-$ and $B \to \rho \ell \nu_\ell$ in the so-called Large-Energy-Effectiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::346d04bd471a4ab67b658f28d450db9b

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Bounds on the unitarity triangle, $\sin$ 2 $\beta$ and $K \to$ $\pi \nu \overline \nu$ decays in models with minimal flavor violation

Autor: Buras, Andrzej J., Fleischer, Robert

Physical review / D 64(11), 115010 (2001). doi:10.1103/PhysRevD.64.115010
We present a general discussion of the unitarity triangle from $\epsilon_K$, $\Delta M_{d,s}$ and $K \to \pi\nu\overline{\nu}$ in models with minimal flavour violation (MF

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8057a93a453d9835c5c3db116e55b8ae

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Direct determination of the CKM matrix from decays of $W$ bosons and top quarks at high-energy $e^{+} e^{-}$ colliders

Autor: Letts, J., Mattig, Peter

28 pp. (2001).
At proposed high energy linear $e^+e^-$ colliders a large number of $W$ bosons and top quarks will be produced. We evaluate the potential precision to which the decay branching ratios into the various quark species can be measured

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65d7069ab4f194e4fe31c1da0300c59f
https://bib-pubdb1.desy.de/record/585518

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Bounds on the unitarity triangle, $\sin$ 2 $\beta$ and $K \to$ $\pi \nu \overline \nu$ decays in models with minimal flavor violation

Autor: Buras, Andrzej J., Fleischer, Robert

Publikováno v: Physical review / D 64(11), 115010 (2001). doi:10.1103/PhysRevD.64.115010

We present a general discussion of the unitarity triangle from $\epsilon_K$, $\Delta M_{d,s}$ and $K \to \pi\nu\overline{\nu}$ in models with minimal flavour violation (MFV), allowing for arbitrary signs of the generalized Inami--Lim functions $F_{tt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______1108::d2b936bf6369c3b2c018c21909ed4ab6
https://bib-pubdb1.desy.de/record/321010

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Gauge-Independent W-Boson Partial Decay Widths

Autor: Matthias Steinhauser, Bernd A. Kniehl, Fantina Madricardo

Publikováno v: Scopus-Elsevier
Physical review / D 62(7), 073010 (2000). doi:10.1103/PhysRevD.62.073010

We calculate the partial decay widths of the W boson at one loop in the standard model using the on-shell renormalization scheme endowed with a gauge-independent definition of the Cabibbo-Kobayashi-Maskawa (CKM) mixing matrix. We work in $R_\xi$ gaug

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99b3ee04ba1cc75442cdb456105bac4c
http://arxiv.org/abs/hep-ph/0005060

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Gauge independent W boson partial decay widths

Autor: Kniehl, Bernd A., Madricardo, Fantina, Steinhauser, Matthias

Physical review / D 62(7), 073010 (2000). doi:10.1103/PhysRevD.62.073010
We calculate the partial decay widths of the W boson at one loop in the standard model using the on-shell renormalization scheme endowed with a gauge-independent definition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3da3cbfe94dbe86dc84c838e4cd97203

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