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Measurement of Forward-backward Charge Asymmetry in the Process of B-quark Production in E + E - Annihilation Around √s

Measurement of Forward-backward Charge Asymmetry in the Process of B-quark Production in E + E - Annihilation Around √s PDF Author: M. Shirakata
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Languages : en
Pages :

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Measurement of Forward-backward Charge Asymmetry in the Process of B-quark Production in E + E - Annihilation Around √s

Measurement of Forward-backward Charge Asymmetry in the Process of B-quark Production in E + E - Annihilation Around √s PDF Author: M. Shirakata
Publisher:
ISBN:
Category :
Languages : en
Pages :

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MEASUREMENT OF FORWARD-BACKWARD CHARGE ASYMMETRY IN THE PROCESS OF B-QUARK PRODUCTION IN E+E- ANNIHILATION AROUND SQUARE ROOT OF S

MEASUREMENT OF FORWARD-BACKWARD CHARGE ASYMMETRY IN THE PROCESS OF B-QUARK PRODUCTION IN E+E- ANNIHILATION AROUND SQUARE ROOT OF S PDF Author: M. Shirakata
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Category :
Languages : en
Pages : 0

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A Measurement of the B-quark Forward-backward Charge Asymmetry in Electron-positron Annihilation at a Center-of-mass Energy of 58 GeV

A Measurement of the B-quark Forward-backward Charge Asymmetry in Electron-positron Annihilation at a Center-of-mass Energy of 58 GeV PDF Author: Timothy Lester Thomas
Publisher:
ISBN:
Category :
Languages : en
Pages : 548

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Measurement of the Forward-backward Charge Asymmetry in Electron-positron Annihilation Into a Quark-antiquark Pair

Measurement of the Forward-backward Charge Asymmetry in Electron-positron Annihilation Into a Quark-antiquark Pair PDF Author: David Donald Stuart
Publisher:
ISBN:
Category :
Languages : en
Pages : 236

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Measurements of B-quark Forward-backward Charge Asymmetry and Axial-vector Coupling Using Inclusive Muons in E +e - Annihilation at √s

Measurements of B-quark Forward-backward Charge Asymmetry and Axial-vector Coupling Using Inclusive Muons in E +e - Annihilation at √s PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Measurement of the forward-backward charge asymmetry in electron-positron annihilation into a quark-antiquark pair a test of electroweak interference by David Donald Stuart

Measurement of the forward-backward charge asymmetry in electron-positron annihilation into a quark-antiquark pair a test of electroweak interference by David Donald Stuart PDF Author: David D. Stuart
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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First Measurement of the Forward-backward Asymmetry in Bottom-quark Pair Production at High Mass

First Measurement of the Forward-backward Asymmetry in Bottom-quark Pair Production at High Mass PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 11

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Book Description
We measure the particle-level forward-backward production asymmetry in $\mathrm{b\bar{b}}$ pairs with masses (m$\mathrm{b\bar{b}}$) larger than 150 GeV/c2, using events with hadronic jets and employing jet charge to distinguish b from $\bar{b}$. The measurement uses 9.5 fb-1 of $\mathrm{p\bar{p}}$ collisions at a center-of-mass energy of 1.96 TeV recorded by the CDF II detector. The asymmetry as a function of m$\mathrm{b\bar{b}}$ is consistent with zero, as well as with the predictions of the standard model. The measurement disfavors a simple model including an axigluon with a mass of 200 GeV/c2, whereas a model containing a heavier 345 GeV/c2 axigluon is not excluded.

Rice Meeting, The - Proceedings Of The 1990 Meeting Of The Division Of Particles And Fields Of The Aps (In 2 Volumes)

Rice Meeting, The - Proceedings Of The 1990 Meeting Of The Division Of Particles And Fields Of The Aps (In 2 Volumes) PDF Author: Billy E Bonner
Publisher: World Scientific
ISBN: 9814583642
Category :
Languages : en
Pages : 1140

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Book Description
DPF 90 at Rice University was planned as a major conference of truly international character which reviews recent developments in all areas of particle physics. Plenary session topics include new results from SLC, LEP, pp colliders, Heavy Quark Physics, High Energy Astrophysics. Two-day mini-conferences were held on the following subjects: Electroweak Physics, QCD and Hadron Physics, Theory Beyond the Standard Model, Non-accelerator Physics.

Measurement of the Polarized Forward-backward Asymmetry of Z° --] B{bar B} Using a Lifetime Tag and Momentum-weighted Track Charge

Measurement of the Polarized Forward-backward Asymmetry of Z° --] B{bar B} Using a Lifetime Tag and Momentum-weighted Track Charge PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6

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We present a direct measurement of the parity-violating parameter A{sub b} by analyzing the left-right forward-backward asymmetry of b quarks in ee− --> Z{sup o} --> b{bar b}. The SLD experiment observes hadronic decays of Z{sup o} bosons produced at resonance in collisions of longitudinally polarized electrons and unpolarized positrons at the SLC. Heavy flavor decays of the Z{sup o} are identified by taking advantage of the long lifetime of B hadrons, the small, stable SLC beam spot, and precise tracking from SLD. The asymmetry A{sub b} is measured with a self-calibrating technique employing momentum-weighted track charge from both hemispheres in the tagged events. From our 1994--1995 sample of 3.6 pb−1 of ee− annihilation data with a luminosity-weighted average e− polarization of 77.3%, and our 1993 sample of 1.8 pb−1 with a luminosity-weighted polarization of 63.1%, we obtain A{sub b}(preliminary) = 0.843 " 0.046(stat.) " 0.051(syst.).

Measurement of the Forward-Backward Charge Asymmetry($A_{FB}$) Using $p\bar{p}\rightarrow Z/\gamma*\rightarrow E^+e^-$ Events in $\sqrt{S}

Measurement of the Forward-Backward Charge Asymmetry($A_{FB}$) Using $p\bar{p}\rightarrow Z/\gamma*\rightarrow E^+e^-$ Events in $\sqrt{S} PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 266

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This dissertation describes a measurement of the forward-backward asymmetry(A{sub FB}) in p{bar p} → Z/[gamma]* → ee events using 5.0 fb−1 data collected by the D0 detector at the Fermilab Tevatron. The AFB is measured as a function of the invariant mass of the electron-positron pair. Along with obtaining normalized differential cross section 1/[sigma] x d[sigma]/dM and Z to light quark couplings, we measured the Standard Model(SM) fundamental parameter, the effective weak mixing angle sin2 [theta]{sub eff}{sup lept}, with an unprecedented precise in light quark sector, namely the single D0 measurement has surpassed the LEP combination of four experiment results of inclusive hadronic charge asymmetry.