Multivariate analysis methods to tag b-quark events at LEP/SLC

specialized methods to teach spelling: comparing three methods

چکیده: بررسی ادبیات مربوطه در کشور در زمینه یادگیری زبان انگلیسی نشان می‎دهد که علی‎رغم اهمیت املا در فرآیند یادگیری به طور عام و یادگیری زبان انگلیسی به طور خاص، این مولفه از جایگاهی متناسب با اهمیت آن برخوردار نیست و عمدتاً نادیده گرفته شده است. تحقیقات گسترده‎ای در خارج از کشور در مورد ماهیت این مولفه صورت گرفته است، در حالی که به جرأت می‎توان گفت در داخل کشور گامی در مورد درک ماهیت آن و فرآی...

Searches for new physics in events with a photon and b-quark jet at CDF

Double Tag Events in Two-photon Collisions at Lep

Double tag events in two photon collisions are studied using the L3 detector at the LEP center of mass energies √ s ≃ 189 − 202 GeV. The cross-section of γ * γ * collisions is measured at an average photon virtuality Q 2 = 15 GeV 2. The results are in agreement with Monte Carlo predictions based on perturbative QCD, while the Quark Parton Model alone is insufficient to describe the data. The me...

b - Quark Physics at DORIS 1

The high energy physics program (Ecms ≤ 8.6GeV ) at DORIS was initiated by the PLUTO collaboration which sent its proposal to the Forschungskollegium June 30, 1977 [1]. The same day the observation of the Υ(9.46) resonance was announced to the public in a seminar at FNAL [2]. The physics program proposed by PLUTO included the measurement of σtot and the search for charm and τ . The search for a...

B-Quark Production at Hadron Colliders

Results for b-quark production at hadron colliders, both current and proposed, are presented. Distributions in pt are presented for the TeVatron and SSC. Confirmation of agreement between the O(α S) calculations and UA1 data is presented, and the discrepancy between the O(α S) calculations and the CDF results is updated with the most recent data.