Carleton University

About: Carleton University is a education organization based out in Ottawa, Ontario, Canada. It is known for research contribution in the topics: Population & Context (language use). The organization has 15852 authors who have published 39650 publications receiving 1106610 citations.

Quarkonia and their transitions

Abstract: Valuable data on quarkonia (the bound states of a heavy quark $Q=c,b$ and the corresponding antiquark) have recently been provided by a variety of sources, mainly ${e}^{+}{e}^{\ensuremath{-}}$ collisions, but also hadronic interactions. This permits a thorough updating of the experimental and theoretical status of electromagnetic and strong transitions in quarkonia. The $Q\overline{Q}$ transitions to other $Q\overline{Q}$ states are discussed, with some reference to processes involving $Q\overline{Q}$ annihilation.

"It's Almost Like I Have a Job, but I Don't Get Paid": Fathers at Home Reconfiguring Work, Care, and Masculinity

Abstract: Rooted in a qualitative research project with 70 stay-at-home fathers in Canada, this paper explores the ways that work and family interact for fathers who “trade cash for care.” While fathers are at home, they also remain connected to traditionally masculine sources of identity such as paid work and they take on unpaid masculine self-provisioning work at home and community work that builds on traditional male interests. They thus carve out complex sets of relations between home, paid and unpaid work, community work, and their own sense of masculinity. Narratives from stay-at-home fathers speak volumes about the ways in which the long shadow of hegemonic masculinity hangs over them while also pointing to hints of resistance and change as fathers begin to critique concepts of “male time” and market capitalism approaches to work and care. The paper concludes by pointing to several theoretical contributions to research on fatherhood and masculinities as well as to policy implications that arise from this study on the social valuing of unpaid work.

Charmonium options for the X ( 3872 )

Abstract: In this paper we consider all possible $1D$ and $2P$ $c\overline{c}$ assignments for the recently discovered $X(3872).$ Taking the experimental mass as input, we give numerical results for the $E1$ radiative widths as well as the three principal types of strong decays; open-charm, $c\overline{c}$ annihilation and closed-charm hadronic transitions. We find that many assignments may be immediately eliminated due to the small observed total width. The remaining viable $c\overline{c}$ assignments are $1{}^{3}{D}_{3},$ $1{}^{3}{D}_{2},$ $1{}^{1}{D}_{2},$ $2{}^{3}{P}_{1}$ and $2{}^{1}{P}_{1}.$ A search for the mode $J/\ensuremath{\psi}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$ can establish the C parity of the $X(3872),$ which will eliminate many of these possibilities. Radiative transitions can then be used to test the remaining assignments, as they populate characteristic final states. The $1{}^{3}{D}_{2}$ and $1{}^{1}{D}_{2}$ states are predicted to have large (ca. 50%) radiative branching fractions to ${\ensuremath{\chi}}_{c1}\ensuremath{\gamma}$ and ${h}_{c}\ensuremath{\gamma},$ respectively. We predict that the $1{}^{3}{D}_{3}$ will also be relatively narrow and will have a significant (ca. 10%) branching fraction to ${\ensuremath{\chi}}_{c2}\ensuremath{\gamma},$ and should also be observable in B decay. Tests for non-$c\overline{c}X(3872)$ assignments are also discussed.