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A measurement is presented of the inclusive neutral current e p scattering cross section using data collected by the H1 experiment at HERA during the years 2003 to 2007 with proton beam energies Ep of 920, 575, and 460 GeV. The kinematic range of the measurement covers low absolute four-momentum transfers squared, 1.5 GeV2 < Q2 < 120 GeV2, small values of Bjorken x, 2.9 10-5 < x < 0.01, and extends to high inelasticity up to y = 0.85. The structure function FL is measured by combining the new results with previously published H1 data at Ep = 920 GeV and Ep = 820 GeV. The new measurements are used to test several phenomenological and QCD models applicable in this low Q2 and low x kinematic domain.

Inclusive production of D ∗ mesons in deep-inelastic ep scattering at HERA is studied in the range 5< Q 2<100 GeV2 of the photon virtuality and 0.02< y<0.7 of the inelasticity of the scattering process. The observed phase space for the D ∗ meson is p T ( D ∗)>1.25 GeV and | η( D ∗)|<1.8. The data sample corresponds to an integrated luminosity of 348 pb-1 collected with the H1 detector. Single and double differential cross sections are measured and the charm contribution F2ᶜbarc to the proton structure function F 2 is determined. The results are compared to perturbative QCD predictions at next-to-leading order implementing different schemes for the charm mass treatment and with Monte Carlo models based on leading order matrix elements with parton showers.

The production of jets is studied in deep-inelastic ep scattering at large negative four momentum transfer squared 150

The production of jets is studied in deep-inelastic e+p scattering at low negative four momentum transfer squared 5

Events with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full eᵖ data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb⁻1. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured as 1.14 0.25 (stat.) 0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW gauge couplings and for a measurement of the W boson polarisation.

Aims Heart failure with preserved ejection fraction (HFpEF) accounts for half of all heart failure (HF), but low awareness and diagnostic challenges hinder identification in primary care. Our aims were to evaluate the recruitment and diagnostic strategy in the Optimise HFpEF cohort and compare with recent recommendations for diagnosing HFpEF. Methods and results Patients were recruited from 30 primary care practices in two regions in England using an electronic screening algorithm and two secondary care sites. Baseline assessment collected clinical and patient‐reported data and diagnosis by history, assessment, and trans‐thoracic echocardiogram (TTE). A retrospective evaluation compared study diagnosis with H2FPEF score and HFA‐PEFF diagnostic algorithm. A total of 152 patients (86% primary care, mean age 78.5, 40% female) were enrolled; 93 (61%) had HFpEF confirmed. Most participants had clinical features of HFpEF, but those with confirmed HFpEF were more likely female, obese, functionally impaired, and symptomatic. Some echocardiographic findings were diagnostic for HFpEF, but no difference in natriuretic peptide levels were observed. The H2FPEF and HFA‐PEFF scores were not significantly different by group, although confirmed HFpEF cases were more likely to have scores indicating high probability of HFpEF. Conclusions Patients with HFpEF in primary care are difficult to identify, and greater awareness of the condition, with clear diagnostic pathways and specialist support, are needed. Use of diagnostic algorithms and scores can provide systematic approaches to diagnosis but may be challenging to apply in older multi‐morbid patients. Where diagnostic uncertainty remains, pragmatic decisions are needed regarding the value of additional testing versus management of presumptive HFpEF.