6,771 research outputs found
Is bigger better for primary care groups and trusts?
SIGLEAvailable from British Library Document Supply Centre-DSC:m01/16032 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Study of the doubly charmed tetraquark T+cc
Quantum chromodynamics, the theory of the strong force, describes interactions of coloured quarks and gluons and the formation of hadronic matter. Conventional hadronic matter consists of baryons and mesons made of three quarks and quark-antiquark pairs, respectively. Particles with an alternative quark content are known as exotic states. Here a study is reported of an exotic narrow state in the D0D0π+ mass spectrum just below the D*+D0 mass threshold produced in proton-proton collisions collected with the LHCb detector at the Large Hadron Collider. The state is consistent with the ground isoscalar T+cc tetraquark with a quark content of ccu⎯⎯⎯d⎯⎯⎯ and spin-parity quantum numbers JP = 1+. Study of the DD mass spectra disfavours interpretation of the resonance as the isovector state. The decay structure via intermediate off-shell D*+ mesons is consistent with the observed D0π+ mass distribution. To analyse the mass of the resonance and its coupling to the D*D system, a dedicated model is developed under the assumption of an isoscalar axial-vector T+cc state decaying to the D*D channel. Using this model, resonance parameters including the pole position, scattering length, effective range and compositeness are determined to reveal important information about the nature of the T+cc state. In addition, an unexpected dependence of the production rate on track multiplicity is observed
Health economics at York
SIGLEAvailable from British Library Document Supply Centre- DSC:91/13149(Health) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
The very idea of classification in international accounting
Available from British Library Document Supply Centre- DSC:3597.8873(1/16) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo
Milk production An economic survey in South West England 1980-81
2.10SIGLELD:7620.924(214) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
A microeconometric analysis of smoking in the UK Health and Lifestyle Survey
SIGLEAvailable from British Library Document Supply Centre- DSC:3597.873(YU-CHE-DP--139) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
The role of farm tourism in the less favoured areas of England and Wales 1981 A physical and financial appraisal
SIGLELD:7620.924(218) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Is there to much laboratory testing?
SIGLEAvailable from British Library Document Supply Centre- DSC:3597.873(YU-CHE-DP--79) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Economics and intensive care From general principles to practical implications
SIGLEAvailable from British Library Document Supply Centre- DSC:3597.873(YU-CHE-DP--80) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Economics, QALYs and medical ethics A health economist's perspective
QALY - Quality Adjusted Life YearsSIGLEAvailable from British Library Document Supply Centre- DSC:3597.873(YU-CHE-DP--121) / BLDSC - British Library Document Supply CentreGBUnited Kingdo
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