470 research outputs found
Hill Town Touchstone: Reconsidering William Apess and Colrain, Massachusetts
No full textThe Pequot author William Apess is regarded as having almost miraculously transcended poverty, racism, and injustice to become an eloquent orator. Modern scholars have imagined the place of his birth as a primitive camp in the hills. Yet Colrain, in the early 1800s, was a bustling, religiously diverse, transcultural town where white (mostly Scots- Irish), Native American, and African American people routinely crossed paths, and where the Apess family routinely crossed color lines. Over time, Apess drew on his experiences among tribal, racial, and religious groups in multiple locales (Colchester, Colrain, Ledyard, Mashpee, Tyendinega, and elsewhere) to construct a compellingly romanticized (and colonized) version of indigenous identity. Onstage and in print, he was an iconic “poor Indian” and “son of the forest”; in person, he was a well-educated, cosmopolitan performer who loved the limelight and feared the wilderness. He evoked a precolonial ideal of a pristine Native life, while delivering trenchant critiques of white settler abuses; yet he advocated for religious conformity more than for indigenous survivance. Thus, to better contextualize Apess’ life and works, we need to critically and carefully consider nineteenth-century modes of identity formation, national affiliation, cultural performance, and racial tropes, including those articulated by Apess himself
B decays
No full textWe review the prospects for B decay studies at the LHC. Contributing authors: J. Baines, S.P. Baranov, P. Bartalini, M. Beneke, E. Bouhova, G. Buchalla, I. Caprini, F. Charles, J. Charles, Y. Coadou, P. Colangelo, P. Colrain, J. Damet, F. De Fazio, A. Dighe, H. Dijkstra, P. Eerola, N. Ellis, B. Epp, S. Gadomski, P. Galumian, I. Gavrilenko, S. George, V.M. Ghete, V. Gibson, L. Guy, Y. Hasegawa, P. Iengo, A. Jacholkowska, R. Jones, A. Khodjamirian, E. Kneringer, P. Koppenburg, H. Korsmo, N. Labanca, L. Lellouch, M. Lehto, Y. Lemoigne, J. Libby, J. Matias, S. Mele, M. Misiak, A.M. Nairz, T. Nakada, A. Nikitenko, N. Nikitin, A. Nisati, F. Palla, E. Polycarpo, J. Rademacker, F. Rizatdinova, S. Robins, D. Rousseau, W. Ruckstuhl, M.A. Sanchis, O. Schneider, M. Shapiro, C. Shepherd-Themistocleous, P. Sherwood, L. Smirnova, M. Smizanska, A. Starodumov, N. Stepanov, Z. Xie, N. ZaitsevWe review the prospects for B decay studies at the LHC. Contributing authors: J. Baines, S.P. Baranov, P. Bartalini, M. Beneke, E. Bouhova, G. Buchalla, I. Caprini, F. Charles, J. Charles, Y. Coadou, P. Colangelo, P. Colrain, J. Damet, F. De Fazio, A. Dighe, H. Dijkstra, P. Eerola, N. Ellis, B. Epp, S. Gadomski, P. Galumian, I. Gavrilenko, S. George, V.M. Ghete, V. Gibson, L. Guy, Y. Hasegawa, P. Iengo, A. Jacholkowska, R. Jones, A. Khodjamirian, E. Kneringer, P. Koppenburg, H. Korsmo, N. Labanca, L. Lellouch, M. Lehto, Y. Lemoigne, J. Libby, J. Matias, S. Mele, M. Misiak, A.M. Nairz, T. Nakada, A. Nikitenko, N. Nikitin, A. Nisati, F. Palla, E. Polycarpo, J. Rademacker, F. Rizatdinova, S. Robins, D. Rousseau, W. Ruckstuhl, M.A. Sanchis, O. Schneider, M. Shapiro, C. Shepherd-Themistocleous, P. Sherwood, L. Smirnova, M. Smizanska, A. Starodumov, N. Stepanov, Z. Xie, N. Zaitse
A Determination of the Effective Weak Mixing Angle from a Measurement of the Forward-Backward Charge Asymmetry in Heavy-Flavour Decays of the Boson at LEP
No full textThis thesis describes a measurement of the forward-backward hemisphere charge asymmetry in heavy flavour decays of the Z0 boson using the ALEPH detector at LEP. Z0→ bb decays are tagged by identifying the decay products of long-lived b hadrons via. their large track impact parameters relative to the Z0 decay point. The background event tagging efficiencies are estimated using Monte Carlo simulation, whereas the bb event tagging efficiency is evaluated by measuring the relative rates of single and double tagged events. In a sample of 70,259 hadronic Z0 decays, with a b purity of 88%, the charge asymmetry, , expressed as the mean difference between the momentum weighted forward and backward hemisphere charges, is measured to be = -0.0112 +/- 0.00 12(stat.) +/-0.00018(syst.). Using a precision measurement of the mean b quark hemisphere charge, and accurate fits to the angular dependence of the event tagging efficiencies, is used to determine a value for the electroweak asymmetry,: AbbFB= 0.1183+/- 0.0131(stat.) +/- 0.00057(syst.). Interpreting AbbFB in the framework of the minimal Standard Model of electroweak interactions, the effective weak mixing angle. Sin2thetaWeff is determined : Sin2thetaWeff = 0.2281 +/- 0.0024(stat) +/- 0.0011 (syst). This places the following Standard Model limits on the mass of the top quark, mt = 259+43-50GeV/c2, or mt < 338 GeV/c2, (95% confidence level)
A preliminary measureament of sin**2 theta^eff_W from A^b b/bar_FB in the 1992 lifetime tagged Heavy-Flavour sample
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