Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download A Measurement Of The B Quark Mass From Hadronic Z Decays Extras full books in PDF, epub, and Kindle. Read online A Measurement Of The B Quark Mass From Hadronic Z Decays Extras ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
![Download A MEASUREMENT of the b-quark Mass from Hadronic Z Decays [Extras] PDF Online Free](https://books.google.com/books/content/images/frontcover/dQN7zwEACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book A MEASUREMENT of the b-quark Mass from Hadronic Z Decays [Extras] written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : John A. Coller
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (51 download)
Download or read book A Measurement of Bottom Quark Production in Z Boson Hadronic Decays written by John A. Coller and published by . This book was released on 2000 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (871 download)
Download or read book A Preliminary Measurement of the B Quark Fragmentation Function in Hadronic Z° Decays written by and published by . This book was released on 1996 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the {ital b} quark fragmentation function from a sample of semi-leptonic {bold B} decays collected between 1993 and 1995 in the SLD experiment at SLAC. The energy of each tagged {bold B} hadron was reconstructed using information from the lepton and a partially reconstructed charm decay vertex. A comparison of the scaled energy distribution with several phenomenological models of heavy quark fragmentation was made, using the same model in each case to correct the data. The average scaled energy was found to be {l_angle}[chi]{sub E}{r_angle} = 0.697±0.012({ital stat}){sup +0. 028}{sub -0.024} ({ital syst})(preliminary).
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Measurement of the B Quark Fragmentation Function in Z° Decays written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present results of a new measurement of the inclusive b quark fragmentation function in Z decays using a novel kinematic B hadron energy reconstruction technique. The measurement is performed using 150,000 hadronic Z events recorded in the SLD experiment at SLAC between 1996 and 1997. The small and stable SLC beam spot and the CCD-based vertex detector are used to reconstruct topological B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. The authors measure the B energy with good efficiency and resolution over the full kinematic range. While comparing the scaled B energy distribution with predictions of several models of b quark fragmentation, the authors also test several functional forms of the B energy distribution. Several fragmentation models and functional forms are excluded by the data. The mean of the scaled energy distribution of the weakly decaying B hadron is measured to be x{sub B} = 0.714"0.00(stat)"0.007(syst)"0.002 (model).
![Download A Preliminary Measurement of the B Quark Fragmentation Function in Hadronic Z[sup 0] Decays PDF Online Free](https://books.google.com/books/content/images/frontcover/-HyQDAEACAAJ?fife=w200-h370)
Download or read book A Preliminary Measurement of the B Quark Fragmentation Function in Hadronic Z[sup 0] Decays written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the[ital b] quark fragmentation function from a sample of semi-leptonic[bold B] decays collected between 1993 and 1995 in the SLD experiment at SLAC. The energy of each tagged[bold B] hadron was reconstructed using information from the lepton and a partially reconstructed charm decay vertex. A comparison of the scaled energy distribution with several phenomenological models of heavy quark fragmentation was made, using the same model in each case to correct the data. The average scaled energy was found to be[l-angle][chi][sub E][r-angle]= 0.697[+-]0.012([ital stat])[sup+0. 028][sub -0.024] ([ital syst])(preliminary).
![Download Measurement of the Hadronic Mass Spectrum in B[right Arrow]X[subscript U]l[nu] Decays and Determination of the B-quark Mass at the BABAR Experiment PDF Online Free](https://books.google.com/books/content/images/frontcover/CmZOAQAAMAAJ?fife=w200-h370)
Author : Kerstin Tackmann
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.:/5 (34 download)
Download or read book Measurement of the Hadronic Mass Spectrum in B[right Arrow]X[subscript U]l[nu] Decays and Determination of the B-quark Mass at the BABAR Experiment written by Kerstin Tackmann and published by . This book was released on 2008 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Frederic Kral
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (33 download)
Download or read book Measurement of the Z-Boson Branching Fraction Into Hadrons Containing Bottom Quarks written by J. Frederic Kral and published by . This book was released on 1990 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Measurement of the B-Quark Fragmentation Function in Z0 Decays written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the b-quark inclusive fragmentation function in Z° decays using a novel kinematic B-hadron energy reconstruction technique. The measurement was performed using 350,000 hadronic Z° events recorded in the SLD experiment at SLAC between 1997 and 1998. The small and stable SLC beam spot and the CCD-based vertex detector were used to reconstruct B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. We measured the B energy with good efficiency and resolution over the full kinematic range. We compared the scaled B-hadron energy distribution with models of b-quark fragmentation and with several ad hoc functional forms. A number of models and functions are excluded by the data. The average scaled energy of weakly-decaying B hadrons was measured to be x{sub b} = 0.709 " 0.003 (stat) " 0.003 (syst) " 0.002 (model).
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (683 download)
Download or read book An Improved Measurement of the B Quark Fragmentation Function in Z° Decays at SLD. written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary results of a new measurement of the b quark fragmentation function in Z° decays using a novel kinematic B hadron energy reconstruction technique. The measurement is performed using 150,000 hadronic Z° events recorded in the SLD experiment at SLAC between 1996 and 1997. The small and stable SLC beam spot and the CCD-based vertex detector are used to reconstruct topological B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. We measure the B energy with good efficiency and resolution over the full kinematic range. We compare the scale B hadron energy distribution with several functional forms of the B hadron energy distribution and predictions of several models of b quark fragmentation. Several functions including JETSET + Peterson are excluded by the data. The average scaled energy of the weakly decaying B hadron is measured to be x{sub B} = 0.719 " 0.005 (stat) " 0.007 (syst) " 0.001 (model) (preliminary).
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Precise Measurement of the B-quark Fragmentation Function in Z° Boson Decays written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors have developed a new technique for inclusive reconstruction of the energy of B hadrons. The excellent efficiency and resolution of this technique allow them to make the most precise determination of the b-quark fragmentation function, using ee− {r{underscore}arrow} Z° decays recorded in the SLD experiment at SLAC. The authors compared their measurement with the predictions of a number of fragmentation models. The authors excluded several of these models and measured the average scaled energy of weakly-decaying B hadrons to be (x{sub B}) = 0.714"0.005(stat)"0.007(syst)"0.002 (model-dependence).
Author :
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (16 download)
Download or read book A Measurement of the Z Sup 0 Hadronic Branching Fraction to Bottom Quarks and the Charged Multiplicity of Bottom Quark Events Using Precision Vertex Detectors at E Sub Cm written by and published by . This book was released on 1992 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using the precision vertex detectors of the Mark 2 at the SLC, an impact parameter tag was developed to select a sample of hadronic Z° decays enriched in its fraction of bottom quark events. The nominal tagging method requires that there be at least three tracks whose impact parameters are inconsistent with the track having originated at the electron-position interaction point. A tagging efficiency for b{bar b} events of 50% with a enriched sample purity of 85% was achieved. This impact parameter tag was used to measure the fraction hadronic Z° decays which produce b{bar b} events, F{sub b}. It is found that F{sub b} = 0.232{sub -0.045}{sup +0.053} (stat) {sub -0.021}{sup +0.025} (syst). This result is consistent with those found using other tagging methods as well as the Standard Model prediction of 0.217. The b{bar b}-enriched event sample was also used to measure the difference between the average charged multiplicity of b{bar b} events and that of all hadronic Z° decays,?{bar n}{sub b} = 2.11 {plus minus} 1.82(stat) {plus minus} 0.57(syst). Using previous measurements of the total hadronic charged multiplicity, the corresponding total multiplicity for b{bar b} events is {bar n}{sub b}=23.05 {plus minus} 1.82 (stat) {plus minus} 0.60 (syst). Subtracting the contribution to the multiplicity from B hadron decays yields the multiplicity of the b{bar b} non-leading system, {bar n}{sub nl} = 12.04 {plus minus} 1.82 (stat) {plus minus} 0.63(syst). Comparing this non-leading multiplicity to the total hadronic multiplicity data at lower energy supports the hypothesis that the non-leading particle production is independent of the flavor of the initial quarks.
Author :
Publisher :
ISBN 13 :
Total Pages : 782 pages
Book Rating : 4.3/5 (129 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Measurement of the B Quark Fragmentation Function in Z0 Decays and First Measurement of B-Bbar Energy Correlations written by and published by . This book was released on 2001 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present preliminary results of a new measurement of the inclusive b quark fragmentation function in Z° decays using a novel kinematic B hadron energy reconstruction technique. The measurement is performed using 350,000 hadronic Z° events recorded in the SLD experiment at SLAC between 1997 and 1998. The small and stable SLC beam spot and the CCD-based vertex detector are used to reconstruct topological B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. We measure the B energy with good efficiency and resolution over the full kinematic range. We compare the measured scaled B hadron energy distribution with several functional forms of the B hadron energy distribution and predictions of several models of b quark fragmentation. Several functions are excluded by the data. The average scaled energy of the weakly decaying B hadron is measured to be x{sub B} = 0.710 " 0.003 (stat) " 0.005 (syst) " 0.004 (model) (preliminary). In addition, we reconstruct the decay vertices of both the leading B and hadrons in a large sample of events, and measure their energies. We present the first (preliminary) measurement of the correlation between the B and energies in Z° --> b{bar b} events, and compare with the leading order QCD prediction.
Download or read book Improved Measurement of the B-quark Fragmentation Function in Z0 Decays written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present preliminary results of an improved measurement of the inclusive b quark fragmentation function in Z0 decays using a novel kinematic B hadron energy reconstruction technique. The measurement is performed using 350,000 hadronic Z° events recorded in the SLD experiment at SLAC between 1997 and 1998. The small and stable SLC beam spot and the CCD-based vertex detector are used to reconstruct topological B-decay vertices with high efficiency and purity, and to provide precise measurements of the kinematic quantities used in this technique. They measure the B energy with good efficiency and resolution over the full kinematic range. They compare the measured scaled B hadron energy distribution with predictions of several models of b quark fragmentation and several functional forms of the B hadron energy distribution. Many of these are excluded by the data. The average scaled energy of the weakly decaying B hadron is measured to be x{sub B} = 0.710 " 0.003 (stat) " 0.005 (syst) " 0.004 (model) (preliminary).
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (871 download)
Download or read book Measurement of the Running B-quark Mass Using Ee− 2!b{bar B}g Events written by and published by . This book was released on 1999 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the determination of the running b-quark mass, m{sub b}(M{sub Z}), using Z° decays into 3 or more hadronic jets. We calculated the ratio of e"3-jet fractions in ee− 2!b{bar b} vs. ee− 2!q{sub l}{bar q}{sub l} (q{sub l} = u or d or s) events at next-to-leading order in perturbative QCD using six different infra-red- and collinear-safe jet-finding algorithms. We compared with corresponding measurements from the SLD Collaboration and found a significant algorithm-dependence of the fitted m{sub b}(M{sub Z}) value. Our best estimate, taking correlations into account, is m{sub b}(M{sub Z}) = 2.52 ± 0.27(stat.){sub -0.47}{sup +0.33}(syst.){sub -1.46}{sup +0.54}(theor.) GeV/c2.
Author :
Publisher :
ISBN 13 :
Total Pages : 145 pages
Book Rating : 4.:/5 (96 download)
Download or read book Measurement of the Hadronic Mass Spectrum in B to Xulnu Decaysand Determination of the B-Quark Mass at the BaBar Experiment written by and published by . This book was released on 2008 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: I present preliminary results of the measurement of the hadronic mass spectrum and its first three spectral moments in inclusive charmless semileptonic B-meson decays. The truncated hadronic mass moments are used for the first determination of the b-quark mass and the nonperturbative parameters [mu][pi]2 and [rho]D3 in this B-meson decay channel. The study is based on 383 x 106 B$\bar{B}$ decays collected with the BABAR experiment at the PEP-II e+e- storage rings, located at the Stanford Linear Accelerator Center. The first, second central, and third central hadronic mass moment with a cut on the hadronic mass mX2 6.4GeV2 and the lepton momentum p* 1 GeV are measured to be: M1 = (1.96 ± 0.34stat ± 0.53syst) GeV2; U2 = (1.92 ± 0.59stat ± 0.87syst) GeV4; and U3 = (1.79 ± 0.62stat ± 0.78syst) GeV6; with correlation coefficients [rho]12 = 0.99, [rho]23 = 0.94, and [rho]13 = 0.88, respectively. Using Heavy Quark Effective Theory-based predictions in the kinetic scheme we extract: mb = (4.60 ± 0.13stat ± 0.19syst ± 0.10theo GeV); [mu][pi]2 = (0.40 ± 0.14stat ± 0.20syst ± 0.04theo) GeV2; [rho]D3 = (0.10 ± 0.02stat ± 0.02syst ± 0.07theo) GeV3; at [mu] = 1 GeV, with correlation coefficients [rho]mb[mu][pi]2 = -0.99, [rho] [mu][pi]2[rho]D3 = 0.57, and [rho]mb[rho]D3 = -0.59. The results are in good agreement with earlier determinations in inclusive charmed semileptonic and radiative penguin B-meson decays and have a similar accuracy. Through the comparison of this result to those obtained in other channels, this provides a test of the Heavy Quark Effective Theory predictions that are used for the determination of.
![Download Measurement of the Running B-quark Mass Using E[sup+]e[sup -][yields] B[bar B]g Events PDF Online Free](https://books.google.com/books/content/images/frontcover/MYHqjwEACAAJ?fife=w200-h370)
Download or read book Measurement of the Running B-quark Mass Using E[sup+]e[sup -][yields] B[bar B]g Events written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We have studied the determination of the running b-quark mass, m[sub b](M[sub Z]), using Z[sup 0] decays into 3 or more hadronic jets. We calculated the ratio of[ge] 3-jet fractions in e[sup+]e[sup -][yields] b[bar b] vs. e[sup+]e[sup -][yields] q[sub l][bar q][sub l] (q[sub l]= u or d or s) events at next-to-leading order in perturbative QCD using six different infra-red- and collinear-safe jet-finding algorithms. We compared with corresponding measurements from the SLD Collaboration and found a significant algorithm-dependence of the fitted m[sub b](M[sub Z]) value. Our best estimate, taking correlations into account, is m[sub b](M[sub Z])= 2.52[+-] 0.27(stat.)[sub -0.47][sup+0.33](syst.)[sub -1.46][sup+0.54](theor.) GeV/c[sup 2].
