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Author : Urban Bitenc
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (455 download)
Download or read book Measurement of D^0 mixing using semileptonic decays written by Urban Bitenc and published by . This book was released on 2007 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Arun K. Tripathi
Publisher :
ISBN 13 :
Total Pages : 228 pages
Book Rating : 4.:/5 (376 download)
Download or read book Search for D0-D0 Mixing Using Semileptonic Decays written by Arun K. Tripathi and published by . This book was released on 1997 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael G. Hosack
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (525 download)
Download or read book A Search for D0-D̄0 Mixing in Semileptonic Decays from Focus written by Michael G. Hosack and published by . This book was released on 2002 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of Time-dependent B[sub D][degrees] -[bar B][sub D][degrees] Mixing Using Inclusive Semileptonic Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/WUTCDAEACAAJ?fife=w200-h370)
Download or read book Measurement of Time-dependent B[sub D][degrees] -[bar B][sub D][degrees] Mixing Using Inclusive Semileptonic Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d][sup 0] - W[sub d][sup o] mixing has been observed in events containing high-P[sub t] leptons using a highly inclusive vertexing method to determine the B decay position. The initial state B hadron flavor was determined using the large forward-backward asymmetry provided by the highly polarized electron beam of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z[degrees] decays observed in the SLD detector at the SLC between 1993 and 1995, a preliminary analysis of the mass difference between the two Bo mass eigenstates yields[Delta]m[sub d]= 0.520[+-] 0.072(stat)[+-] 0.035(syst) ps[sup -1].
Author : K. T. Flood
Publisher :
ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (316 download)
Download or read book Search for D0 Anti-D0 Mixing Using Semileptonic Decays written by K. T. Flood and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on an 87-fb{sup -1} dataset collected by the Babar detector at the PEP-II asymmetric-energy B-Factory, a search for D{sup 0}-{bar D}{sup 0} mixing has been made using the semileptonic decay modes D*{sup +} {yields} {pi}{sup +}D{sup 0}, D{sup 0} {yields} Ke{nu} (+c.c.). The use of these modes allows unambiguous flavor tagging and a combined fit of the D{sup 0} decay time and D*{sup +}-D{sup 0} mass difference ({Delta}M) distributions. The high-statistics sample of unmixed semileptonic D{sup 0} decays is used to model the {Delta}M distribution and time-dependence of mixed events directly from the data. Neural networks are used to select events and reconstruct the D{sup 0}. A result consistent with no charm mixing has been obtained, R{sub mix} = 0.0023 {+-} 0.0012 {+-} 0.0004. This corresponds to an upper limit of R{sub mix}
![Download Preliminary Measurement of Time-dependent B[sub D][sup 0]-B[sub D][sup 0] Mixing Using Topology and Charge Selected Semi-leptonic B Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/q0_2jwEACAAJ?fife=w200-h370)
Download or read book Preliminary Measurement of Time-dependent B[sub D][sup 0]-B[sub D][sup 0] Mixing Using Topology and Charge Selected Semi-leptonic B Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B[sub d][sup 0]-B[sub d][sup 0] mixing has been measured using a sample of 150,000 hadronic Z[sup 0] decays collected by the SLD experiment at the SLC between 1993 and 1995. The analysis identifies the semileptonic decays of B mesons with high (p, p[sub t]) leptons and reconstructs the B meson decay length and charge by vertexing the lepton with a partially reconstructed D meson. Vertex charge is used to enrich the selection of neutral over charged B mesons. This method results in a sample of 581 neutral decays with high charge purity. The B candidate is tagged at production with a combined tag that exploits the large polarized b forward-backward asymmetry in conjunction with the opposite hemisphere b jet charge. The final state is tagged by the sign of the high (p, p[sub t]) lepton. From their preliminary analysis the authors find a mass difference between the two B[sub d][sup 0] mass eigenstates of, [Delta]m[sub d]= 0.452[+-] 0.074(stat)[+-] 0.049(syst) ps[sup[minus]1].
![Download A Search for D0-D̄0 Mixing in the Semileptonic Decay of D0[right Arrow] K*ev PDF Online Free](https://books.google.com/books/content/images/frontcover/_fuRNwAACAAJ?fife=w200-h370)
Author : Sean McGee
Publisher :
ISBN 13 :
Total Pages : 282 pages
Book Rating : 4.:/5 (549 download)
Download or read book A Search for D0-D̄0 Mixing in the Semileptonic Decay of D0[right Arrow] K*ev written by Sean McGee and published by . This book was released on 2002 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Measurement of CP Violation in B0d Mixing Using B0d 2!D*-[mu]+([nu][mu]X Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/pZJ1AQAACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (953 download)
Download or read book Measurement of CP Violation in B0d Mixing Using B0d 2!D*-[mu]+([nu][mu]X Decays written by and published by . This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the measurement of the time-integrated semileptonic charge asymmetry in B0d mixing, ad sl, using the decay chain of B0d! D*-[mu]+([nu][mu]), D*-! D0[pi]-, D0! K+[pi]-. Decay candidates are reconstructed from 10.4 fb-1 of data recorded by the DØ detector at Fermilab's Tevatron p$\bar{p}$ collder during the 2002- 2011 'RunII' data taking period. Yields are extracted using a 2 minimising simultaneous binned fit where 490k D candidates are reconstructed. The measurements presented in this thesis was made possible due to sophisticated online and offline reconstruction software, precise tracking systems, and the first-order background asymmetry negating magnet polarity reversal of the DØ detector.
![Download Analysis of the Semileptonic Decay D0 --] Anti-K0 Pi- Mu+ Nu PDF Online Free](https://books.google.com/books/content/images/frontcover/oqXljwEACAAJ?fife=w200-h370)
Author : Ilaria Maria Lucia Segoni
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.:/5 (316 download)
Download or read book Analysis of the Semileptonic Decay D0 --] Anti-K0 Pi- Mu+ Nu written by Ilaria Maria Lucia Segoni and published by . This book was released on 2004 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the analysis of the semileptonic decay D{sup 0} {yields} {bar K}{sup 0} {pi}{sup -} {mu}{sup +}{nu} using FOCUS data. FOCUS is a fixed target experiment at Fermilab that studies the physics of the charm quark. Particles containing charm are produced by photon-gluon fusion from the collision of a photon beam on a BeO target. The experiment is characterized by excellent vertex resolution and particle identification. The spectrometer consists of three systems for track reconstruction (two silicon systems and one multiwire proportional chamber system) and two magnets of opposite polarity. The polarity of the magnet is such that the events of e{sup +}e{sup -} pairs produced in the target (which constitutes the main background) travel through a central opening in the detectors without interactions. Particle momentum is measured from the deflection angle in the magnets. Three multicell Cerenkov counters are used for charged particle identification (for e, {pi}, K, and p). Two different tracking systems located after several interaction lengths of shielding material are used for muon identification. The energy of neutral pions and electrons is measured in two electromagnetic calorimeters, while an hadron calorimeter is used for measuring the neutron energy. During the last four years the FOCUS collaboration provided results on several charm topics: CP violation, D{sup 0}-{bar D}{sup 0} mixing, rare and forbidden decays, precision measurements of semileptonic decays, baryon and meson lifetimes, fully hadronic baryon and meson branching ratios, charm spectroscopy, Dalitz analyses of resonant structures, charm anti-charm production, QCD studies involving double charm particles, and pentaquarks. Semileptonic decays, besides having a clear signature for experiments, provide crucial information for theoretical studies. These decays carry information on the weak coupling of quarks since they can be used for measuring Cabibbo-Kobayashi-Maskawa matrix elements. Although the decay occurs through weak interaction, QCD effects due to quark confinement affect the decay amplitude. These effects can be included through the form factors, which are predicted by different theoretical approaches (quark models, lattice QCD, and sum rules). Experiments can measure form factor ratios, and from the comparison with theory they provide guidance for building a successful theory to describe hadrons.
Author : Kevin T. Flood
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.:/5 (316 download)
Download or read book Search for Neutral D Meson Mixing Using Semileptonic Decays written by Kevin T. Flood and published by . This book was released on 2006 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a 87 fb{sup -1} dataset, a search for D{sup 0}-{bar D}{sup 0} mixing is made using the semileptonic decay modes D*{sup +} {yields} {pi}{sup +} D{sup 0}, D{sup 0} {yields} [K/K*]e{nu} (+c.c.) at the B-Factory facility at the Stanford Linear Accelerator Center. These modes offer unambiguous initial and final-state charm flavor tags, and allow the combined use of the D{sup 0} lifetime and D*{sup +}-D{sup 0} mass difference ({Delta}M) in a global likelihood fit. The high-statistics sample of reconstructed unmixed semileptonic D{sup 0} decays is used to model both the {Delta}M distribution and the time-dependence of mixed events directly from the data. Neural networks are used both to select events and to fully reconstruct the D{sup 0}. A result consistent with no charm mixing has been obtained, R{sub mix}
Author :
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.:/5 (16 download)
Download or read book Measurement of CP Violation in B0d Mixing Using B0d {u2192} D*-?+(??)X Decays written by and published by . This book was released on 2012 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the measurement of the time-integrated semileptonic charge asymmetry in B0d mixing, ad sl, using the decay chain of B0d ! D*-?+(??), D*- ! D0?-, D0 ! K+?-. Decay candidates are reconstructed from 10.4 fb-1 of data recorded by the DØ detector at Fermilab’s Tevatron p$ar{p}$ collder during the 2002- 2011 ‘RunII’ data taking period. Yields are extracted using a 2 minimising simultaneous binned fit where 490k D candidates are reconstructed. The measurements presented in this thesis was made possible due to sophisticated online and offline reconstruction software, precise tracking systems, and the first-order background asymmetry negating magnet polarity reversal of the DØ detector.
Author : Nevin Hummadi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (99 download)
Download or read book Measurements of the semileptonic decay D(+)-->K(-)(*)(0)mu(+)nu(mu) written by Nevin Hummadi and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (893 download)
Download or read book Measurement of Time-dependent B{sub D}° - {bar B}{sub D}° Mixing Using Inclusive Semileptonic Decays written by and published by . This book was released on 1996 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time dependence of B{sub d}° - W{sub d}{sup o} mixing has been observed in events containing high-P{sub t} leptons using a highly inclusive vertexing method to determine the B decay position. The initial state B hadron flavor was determined using the large forward-backward asymmetry provided by the highly polarized electron beam of SLC in combination with a jet charge technique. From a sample of 150,000 hadronic Z° decays observed in the SLD detector at the SLC between 1993 and 1995, a preliminary analysis of the mass difference between the two Bo mass eigenstates yields [Delta]m{sub d} = 0.520 ± 0.072(stat) ± 0.035(syst) ps−1.
Author :
Publisher :
ISBN 13 :
Total Pages : 15 pages
Book Rating : 4.:/5 (951 download)
Download or read book Measurement of D0-D0bar Mixing and CP Violation in Two-Body D0 Decays written by and published by . This book was released on 2013 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K Huitu
Publisher : CRC Press
ISBN 13 : 9780750306614
Total Pages : 1112 pages
Book Rating : 4.3/5 (66 download)
Download or read book High Energy Physics 99 Proceedings of the International Europhysics Conference on High Energy Physics, Tampere, Finland, 15-21 July 1999 written by K Huitu and published by CRC Press. This book was released on 2000-01-01 with total page 1112 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Energy Physics 99 contains the 18 invited plenary presentations and 250 contributions to parallel sessions presented at the International Europhysics Conference on High Energy Physics. The book provides a comprehensive survey of the latest developments in high energy physics. Topics discussed include hard high energy, structure functions, soft interactions, heavy flavor, the standard model, hadron spectroscopy, neutrino masses, particle astrophysics, field theory, and detector development.
![Download Search for D[sup 0]-[bar D][sup 0] Mixing Using Semileptonic Decay Modes PDF Online Free](https://books.google.com/books/content/images/frontcover/2WDijwEACAAJ?fife=w200-h370)
Download or read book Search for D[sup 0]-[bar D][sup 0] Mixing Using Semileptonic Decay Modes written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on an 87-fb[sup -1] dataset collected by the BABAR detector at the PEP-II asymmetric-energy B-Factory, a search for D[sup 0]-[bar D][sup 0] mixing has been made using the semileptonic decay modes D*[sup +] --> [pi][sup +] D[sup 0][sub z] D[sup 0] --> K*[epsilon][nu] (+c.c.). The use of these modes allows unambiguous flavor tagging and a combined fit of the D[sup 0] decay time and D*[sup +]-D[sup 0] mass difference ([Delta]M) distributions. The high-statistics sample of unmixed semileptonic D[sup 0] decays is used to model the [Delta]M distribution and time-dependence of mixed events directly from the data. Neural networks are used to select events and reconstruct the D[sup 0]. A result consistent with no charm mixing has been obtained. R[sub mix] = 0.0023 [+-] 0.0012 [+-] 0.0004. This corresponds to an upper limit of R[sub mix]
Author :
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (893 download)
Download or read book Measurements of the Semileptonic Decays \Bb\to D\ell\nub and \Bb\to D^*\ell\nub Using a Global Fit to D X\ell\nub Final States written by and published by . This book was released on 2008 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semileptonic {bar B} decays to DXl{bar {nu}} (l = e or [mu]) are selected by reconstructing D°l and Dl combinations from a sample of 230 million [Upsilon](4S) 2!B{bar B} decays recorded with the BABAR detector at the PEP-II ee− collider at SLAC. A global fit to these samples in a 3-dimensional space of kinematic variables is used to determine the branching fractions [Beta](B− 2!D°l{bar {nu}}) = 2.36 ± 0.03 ± 0.12% and [Beta](B− 2!D*°l{bar {nu}}) = (5.37 ± 0.02 ± 0.21)% where the errors are statistical and systematic, respectively. The fit also determines form factor parameters in a HQET-based parameterization, resulting in [rho]{sub D}2 = 1.22 ± 0.04 ± 0.07 for {bar B} 2!Dl{bar {nu}} and [rho]{sub D*}2 = 1.21 ± 0.02 ± 0.07 for {bar B} 2!D*l{bar {nu}}. These values are used to obtain the product of the CKM matrix element.
