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- N. Brambilla, S. Eidelman, +47 authors V. I. Zakharov
- 2014

The U.S. Food and Drug Administration (FDA) attempts to identify and understand new risks associated with medical device use; communicate information and recommendations to device users; help manage known risks by providing strategies to facilitate safe use; guide manufacturers to improve design, labeling, and training to address known risks; and guide… (More)

The Sivers mechanism for the single-spin asymmetry in unpolarized lepton scattering from a transversely polarized nucleon is driven by the orbital angular momentum carried by its quark and gluon constituents, combined with QCD final-state interactions. Both quark and gluon mechanisms can generate such a single-spin asymmetry, though only the quark mechanism… (More)

- S Gardner, Ulf-G Meißner
- 2001

We examine the role of B 0 (¯ B 0) → σπ 0 → π + π − π 0 decay in the Dalitz plot analysis of B 0 (¯ B 0) → ρπ → π + π − π 0 decays, employed to extract the CKM parameter α. The σπ channel is significant because it can break the relationship between the penguin contributions in B → ρ 0 π 0 , B → ρ + π − , and B → ρ − π + decays consequent to an assumption of… (More)

- S Gardner, G Valencia
- 1999

In the analysis of ǫ ′ /ǫ it has been traditional to consider the isospin-breaking effects arising from electroweak-penguin contributions and from π 0-η, η ′ mixing, yet additional isospin-violating effects exist. In particular, we study the isospin violation which arises from the u-d quark mass difference in the hadronization of the gluonic penguin… (More)

- S. Gardner
- 2000

Isospin-breaking effects, in particular those associated with electroweak-penguin contributions and π 0-η, η ′ mixing, have long been known to affect the Standard Model prediction of ǫ ′ /ǫ in a significant manner. We have found an heretofore uncon-sidered isospin-violating effect of importance; namely, the u-d quark mass difference can spawn |∆I| = 3/2… (More)

- S Gardner, H B O 'connell
- 1998

We determine the magnitude, phase, and s-dependence of ρ-ω " mixing " in the pion form factor in the time-like region through fits to e + e − → π + π − data. The associated systematic errors in these quantities, arising from the functional form used to fit the ρ resonance, are small. The systematic errors in the ρ mass and width, however, are larger than… (More)

- S. Gardner, C. J. Horowitz
- 1993

The quark exchange model is a simple realization of an adiabatic approximation to the strong-coupling limit of Quantum Chromodynamics (QCD): the quarks always coalesce into the lowest energy set of flux tubes. Nuclear matter is thus modeled in terms of its quarks. We wish to study the correlations imposed by total wavefunction antisymmetry when color… (More)

- Ben Martz, Susan Gardner
- 2016

IntroductIon Negotiation skills play a critical role for today's knowledge workers. Therefore, the need for university students to develop negotiation and problem-solving skills grows more important each year. Concurrently, the need for students to understand and work with computers continues to grow. This paper presents the exploratory results of using a… (More)

- Stanley J Brodsky, Susan Gardner
- Physical review letters
- 2016

Intrinsic heavy quarks in hadrons emerge from the non-perturbative structure of a hadron bound state [1] and are a rigorous prediction of QCD [2, 3]. Lattice QCD calculations indicate significant intrinsic charm and strangeness probabilities [4, 5]. Since the light-front momentum distribution of the Fock states is maximal at equal rapidity, intrinsic heavy… (More)