Photo sharing as a joint activity between an aphasic speaker and others

MSSM corrections to the top–antitop quark forward–backward asymmetry at the Tevatron

“…Precision studies of top quark properties at the Fermilab Tevatron pp and CERN LHC pp colliders keep probing the Standard Model (SM) of electroweak (EW) and strong interactions at an increasing level of precision, and may provide a window to new physics. While the total tt cross section and tt invariant mass (M tt ) distribution agree with SM predictions within their respective uncertainties, a measurement of the corrected (parton-level) forward-backward asymmetry in top-pair production, A tt FB , by the CDF [1][2][3] and D0 [4,5] collaborations at the Tevatron A tt FB (CDF [3]) = 20 ± 7 stat ± 2 syst % A tt FB (D0 [5]) = 19.6 ± 6.5% (1) differs by about 2σ [3,5] from the SM QCD prediction. The difference between measurement and SM QCD prediction is even more pronounced, i. e. at the 3σ level, in the region M tt > 450 GeV, where a measurement of A tt FB yields [2]:…”

“…Note that G (1) j and G (2) q,i j are always real, and one therefore only needs to consider the real part of the functions A a q,i j . Furthermore, the coupling product G…”

“…A tt FB (CDF, M tt > 450 GeV) = 47.5 ± 11.4% (2) The forward-backward asymmetry in the tt center-of-mass (CM) frame is defined as:…”

Providing Epistemic Support for Assessments Through Mobile-Supported Sharing Activities

“…Aaltonen et al, 2014). There may be a parsimonious advantage to providing this direct access insofar as showing images or quoting text may be more efficient than simply describing the referent.…”

“…Mobile-supported sharing activities are one practice for inviting this type of co-participation in contexts where the assessable referent is not physically co-present. Aaltonen, Arminen, and Raudaskoski (2014) investigate a similar multimodal practice, also facilitated through the use of a technological object, in which a digital camera is passed around and the displayed photographs are assessed. The authors examine how this use of technology facilitates interaction between aphasic and non-aphasic speakers, with the visible access to a referent provided by the camera serving to manifest the aphasic participant’s knowledge of a referent he cannot articulate through speech.…”