Author: Brice Emile MaurinPublisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Mots-clés de l'auteur: LHC ; LHCb ; particle physics ; B physics ; lifetime ; semileptonic decay.
Measurement of Lifetimes for Heavy Flavour Mesons Using Semileptonic B Decays at LHCb
Author: Brice Emile MaurinPublisher:
ISBN:
Category :
Languages : en
Pages : 130
Book Description
Mots-clés de l'auteur: LHC ; LHCb ; particle physics ; B physics ; lifetime ; semileptonic decay.
Measurement of the B− and {bar B}° Meson Lifetimes Using Semileptonic Decays
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 11
Book Description
The lifetimes of the B− and {bar B}° mesons are measured using the partially reconstructed semileptonic decays in the CDF experiment.
Measurement of B0 and B+ Lifetimes Using Semileptonic Decays at CDF.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 75
Book Description
Lifetime measurements for B0 and B+ are presented using semileptonic decays of B mesons from 360 pb-1 of data collected by CDF's lepton plus displaced track trigger. The decays B 2!l[nu]DX, where D is either D +, D0, or D* +, are partially reconstructed from a muon or electron, a displaced track, and a fully reconstructed charm meson. The B 0 and B+ lifetimes are obtained from an unbinned maximum-likelihood fit to the proper decay length distributions. The measured lifetimes are [tau]B 0 = 1.527 ± 0.012(stat.) ± 0.023(syst.)ps and [tau]B + = 1.629 ± 0.013(stat.) ± 0.025(syst.)ps.
Measurement of the B+c Meson Lifetime Using B+c -> J/[Psi][mu]+[nu][mu][Chi] Decays with the LHCb Detector at CERN
![Measurement of the B+c Meson Lifetime Using B+c -> J/[Psi][mu]+[nu][mu][Chi] Decays with the LHCb Detector at CERN PDF](https://books.google.com/books/content/images/frontcover/kIAsnQAACAAJ?fife=w80-h100)
Author: Lucio AnderliniMeasurement of Neutral B Meson and Charged B Meson Lifetimes Using Semileptonic Decays at CDF
Author: David K. ClarkPublisher:
ISBN:
Category : Lepton-hadron interactions
Languages : en
Pages : 93
Book Description
Heavy Flavours
Author: A J BurasPublisher: World Scientific
ISBN: 9814602825
Category :
Languages : en
Pages : 803
Book Description
This volume is a collection of review articles on the most outstanding topics in heavy flavour physics. All the authors have made significant contributions to this field. The book reviews in detail the theoretical structure of heavy flavour physics within the Standard Model and its confrontation with existing experimental data.The physics of the top quark and of the Higgs play an important role in this volume. Beginning with radiative electroweak corrections and their impressive tests at LEP and hadron colliders, the book summarizes the present status of quark mixing, CP violation and rare decays. The dynamics of exclusive D- and B-meson decays, the τ-lepton physics and the newly discovered heavy quark symmetries are discussed in detail. The impact of strong interactions on weak decays is clearly visible in many articles. The physics of heavy flavours at LEP, HERA and hadron colliders constitutes an important part of the book. Another significant topic is the possible role of heavy flavours in the spontaneous symmetry breaking of gauge symmetries. Finally the most recent advances in lattice calculations of the properties of heavy flavours and the lattice studies of the dynamics of heavy flavours are presented.
Measurement of the $B_c^{\pm}$ Meson Lifetime Using $B_c^{\pm} \to J/\psi~\pi^{\pm}$ Decays
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 176
Book Description
This thesis describes a measurement of the lifetime of the B± c meson in an exclusive decay channel B± c 2!J/ [psi] [pi]±, where the J/[psi] decays as J/[psi] 2![mu]+[mu]- The measurement uses a data sample with an integrated luminosity of 6.7 fb-1 collected at CDF. This is the first measurement of the B± c meson lifetime in a hadronic channel and the measured lifetime, [tau] = 0.449 +0.054 -0.048(stat:) ± 0.019(syst:) ps, is in good agreement with previous results obtained from semileptonic decay channel and confirms previous measurements and theoretical predictions.
Measurement of the Effective Lifetime of the B0 S Meson Using the Flavour Specific Decay Bs → D-s Π + at the LHCb Experiment
Author: Gemma Claire FardellMeasurement of the B- and Bar Bsup O Meson Lifetimes Using Semileptonic Decays
Author: A MEASUREMENT OF THE LIFETIME AND MIXING FREQUENCY OF NEUTRAL B MESONS WITH SEMILEPTONIC DECAYS IN THE BABAR DETECTOR.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The neutral B meson, consisting of a b quark and an anti-d quark, can mix (oscillate) to its own anti-particle through second-order weak interactions. The measurement of the mixing frequency can constrain the quark mixing matrix in the Standard Model of particle physics. The PEP-II B-factory at the Stanford Linear Accelerator Center provides a very large data sample that enables us to make measurements with much higher precisions than previous measurements, and to probe physics beyond the Standard Model. The lifetime of the neutral B meson[tau][sub B0] and the B[sup 0]-[bar B][sup 0] mixing frequency[Delta]m[sub d] are measured with a sample of approximately 14,000 exclusively reconstructed B[sup 0][yields] D*[sup -][ell][sup+][nu][sub[ell]] signal events, selected from 23 million B[bar B] pairs recorded at the[Upsilon](4S)resonance with the BABAR detector at the asymmetric-energy e[sup+]e[sup -] collider, PEP-II. The decay position of the exclusively reconstructed B is determined by the charged tracks in the final state, and its b-quark flavor at the time of decay is known unambiguously from the charge of the lepton. The decay position of the other B is determined inclusively, and its b-quark flavor at the time of decay is determined (tagged) with the charge of tracks in the final state, where identified leptons or kaons give the most information. The decay time difference of two B mesons in the event is calculated from the distance between their decay vertices and the Lorentz boost of the center of mass. Additional samples of approximately 50,000 events are selected for studies of background events. The lifetime and mixing frequency, along with wrong-tag probabilities and the time-difference resolution function, are measured simultaneously with an unbinned maximum-likelihood fit that uses, for each event, the measured difference in B decay times ([Delta]t), the calculated uncertainty on[Delta]t, the signal and background probabilities, and b-quark tagging for the other B meson. The results are[tau][sub B[sup 0]]= (1.523[sub -0.023][sup+0.024][+-] 0.022) ps and[Delta]m[sub d]= (0.492[+-] 0.018[+-] 0.013) ps[sup -1], where the first error is statistical and the second is systematic. The statistical correlation coefficient between[tau][sub B[sup 0]] and[Delta]m[sub d] is -0.22. This result is consistent with the current world average values, the total errors are comparable with other most-precise measurements.