2,577 research outputs found
'Working outâ identity: distance runners and the management of disrupted identity
This article contributes fresh perspectives to the empirical literature on the sociology of the body, and of leisure and identity, by analysing the impact of long-term injury on the identities of two amateur but serious middle/long-distance runners. Employing a symbolic interactionist framework,and utilising data derived from a collaborative autoethnographic project, it explores the role
of âidentity workâ in providing continuity of identity during the liminality of long-term injury and
rehabilitation, which poses a fundamental challenge to athletic identity. Specifically, the analysis
applies Snow and Andersonâs (1995) and Perinbanayagamâs (2000) theoretical conceptualisations
in order to examine the various forms of identity work undertaken by the injured participants, along
the dimensions of materialistic, associative and vocabularic identifications. Such identity work was
found to be crucial in sustaining a credible sporting identity in the face of disruption to the running
self, and in generating momentum towards the goal of restitution to full running fitness and reengagement
with a cherished form of leisure.
KEYWORDS: identity work, symbolic interactionism, distance running, disrupted identit
Microwave-induced conductance replicas in hybrid Josephson junctions without Floquet-Andreev states
Light-matter interaction enables engineering of non-equilibrium quantum
systems. In condensed matter, spatially and temporally cyclic Hamiltonians are
expected to generate energy-periodic Floquet states, with properties
inaccessible at thermal equilibrium. A recent work explored the tunnelling
conductance of a planar Josephson junction under microwave irradiation, and
interpreted replicas of conductance features as evidence of steady
Floquet-Andreev states. Here we realise a similar device in a hybrid
superconducting-semiconducting heterostructure, which utilises a tunnelling
probe with gate-tunable transparency and allows simultaneous measurements of
Andreev spectrum and current-phase relation of the planar Josephson junction.
We show that, in our devices, spectral replicas in sub-gap conductance emerging
under microwave irradiation are caused by photon assisted tunnelling of
electrons into Andreev states. The current-phase relation under microwave
irradiation is also explained by the interaction of Andreev states with
microwave photons, without the need to invoke Floquet states. The techniques
outlined in this study establish a baseline to distinguish photon assisted
tunnelling from Floquet-Andreev states in mesoscopic devices, a crucial
development towards understanding light-matter coupling in hybrid
nanostructures
Higher harmonic non-linear flow modes of charged hadrons in Pb-Pb collisions at root s(NN)=5.02 TeV
Anisotropic flow coefficients, nu(n), non-linear flow mode coefficients, chi(n,mk), and correlations among different symmetry planes, rho(n,mk) are measured in Pb-Pb collisions at root s(NN) = 5.02TeV. Results obtained with multi-particle correlations are reported for the transverse momentum interval 0.2 <p(T) <5.0 GeV/c within the pseudorapidity interval 0.4 <vertical bar eta vertical bar <0.8 as a function of collision centrality. The nu(n) coefficients and chi(n,mk) and rho(n,mk) are presented up to the ninth and seventh harmonic order, respectively. Calculations suggest that the correlations measured in different symmetry planes and the non-linear flow mode coefficients are dependent on the shear and bulk viscosity to entropy ratios of the medium created in heavy-ion collisions. The comparison between these measurements and those at lower energies and calculations from hydrodynamic models places strong constraints on the initial conditions and transport properties of the system.Peer reviewe
Measurement of Upsilon(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at root s(NN)=5.02 TeV
The first measurement of the ΄(1S) elliptic flow coefficient (v2) is performed at forward rapidity (2.5<y<4) in PbâPb collisions at âsNN=5.02ââTeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT) up to 15ââGeV/c in the 5%â60% centrality interval. The measured ΄(1S)v2 is consistent with 0 and with the small positive values predicted by transport models within uncertainties. The v2 coefficient in 2<pT<15ââGeV/c is lower than that of inclusive J/Ï mesons in the same pT interval by 2.6 standard deviations. These results, combined with earlier suppression measurements, are in agreement with a scenario in which the ΄(1S) production in PbâPb collisions at LHC energies is dominated by dissociation limited to the early stage of the collision, whereas in the J/Ï case there is substantial experimental evidence of an additional regeneration component.Peer reviewe
Production of muons from heavy-flavour hadron decays in pp collisions at root s=5.02 TeV
Production cross sections of muons from semi-leptonic decays of charm and beauty hadrons were measured at forward rapidity (2.5 <y <4) in proton-proton (pp) collisions at a centre-of-mass energy root s = 5.02 TeV with the ALICE detector at the CERN LHC. The results were obtained in an extended transverse momentum interval, 2 <p(T)<20 GeV/c, and with an improved precision compared to previous measurements performed in the same rapidity interval at centre-of-mass energies root s = 2.76 and 7 TeV. The p(T)- and y-differential production cross sections as well as the p(T)-differential production cross section ratios between different centre-of-mass energies and different rapidity intervals are described, within experimental and theoretical uncertainties, by predictions based on perturbative QCD.Peer reviewe
Non-linear flow modes of identified particles in Pb-Pb collisions at root S-NN=5.02 TeV
The p(T)-differential non-linear flow modes, v(4,22), v(5,32), v(6, 33) and v(6,222) for pi(+/-), K-+/-, K-S(0), p + (p) over bar, Lambda + (Lambda) over bar and phi-meson have been measured for the first time at root SNN = 5.02 TeV in Pb-Pb collisions with the ALICE detector at the Large Hadron Collider. The results were obtained with a multi-particle technique, correlating the identified hadrons with reference charged particles from a different pseudorapidity region. These non-linear observables probe the contribution from the second and third order initial spatial anisotropy coefficients to higher flow harmonics. All the characteristic features observed in previous p(T) -differential anisotropic flow measurements for various particle species are also present in the non-linear flow modes, i.e. increase of magnitude with increasing centrality percentile, mass ordering at low p(T )and particle type grouping in the intermediate p(T) range. Hydrodynamical calculations (iEBE-VISHNU) that use different initial conditions and values of shear and bulk viscosity to entropy density ratios are confronted with the data at low transverse momenta. These calculations exhibit a better agreement with the anisotropic flow coefficients than the non-linear flow modes. These observations indicate that non-linear flow modes can provide additional discriminatory power in the study of initial conditions as well as new stringent constraints to hydrodynamical calculations.Peer reviewe
Production of Sigma{\pm}pi?pK+ in p+p reactions at 3.5 GeV beam energy
We study the production of Sigma^+-pi^+-pK^+ particle quartets in p+p
reactions at 3.5 GeV kinetic beam energy. The data were taken with the HADES
experiment at GSI. This report evaluates the contribution of resonances like
Lambda(1405$, Sigma(1385)^0, Lambda(1520), Delta(1232), N^* and K^*0 to the
Sigma^+- pi^-+ p K+ final state. The resulting simulation model is compared to
the experimental data in several angular distributions and it shows itself as
suitable to evaluate the acceptance corrections properly.Comment: 15 pages, 5 figure
Dilepton production in pp and CC collisions with HADES
Dilepton production has been measured with HADES, the "High Acceptance
DiElectron Spectrometer". In pp collisions at 2.2GeV kinetic beam energy,
exclusive eta production and the Dalitz decay eta -> gamma e+e- has been
reconstructed. The electromagnetic form factor is well in agreement with
existing data. In addition, an inclusive e+e- spectrum from the C+C reaction at
2AGeV is presented and compared with a thermal model.Comment: 11 pages, 3 figures, proceedings of the IVth International Conference
on Quarks and Nuclear Physics, Madrid, June 5th-10th, submitted to
Eur.Phys.J.
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