We study Lambda and (Lambda) over bar production asymmetries in p (p) over bar -> Lambda((Lambda) over bar )X, p (p) over bar -> J/psi Lambda((Lambda) over bar )X, and p (p) over bar -> ...mu(+/-)Lambda((Lambda) over bar )X events recorded by the D0 detector at the Fermilab Tevatron collider at root s = 1.96 TeV. We find an excess of Lambda's ((Lambda) over bar 's) produced in the proton (antiproton) direction. This forward-backward asymmetry is measured as a function of rapidity. We confirm that the (Lambda) over bar/Lambda production ratio, measured by several experiments with various targets and a wide range of energies, is a universal function of "rapidity loss," i.e., the rapidity difference of the beam proton and the lambda.
Here, we present a measurement of the correlation between the spins of t and tbar quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We ...apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb$^{-1}$. The measured value of the correlation coefficient in the off-diagonal basis, $O_{off} = 0.89 \pm 0.22$ (stat + syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.
One of the core issues across computer and computational science today is adapting to, managing, and learning from the influx of "Big Data". In the commercial space, this problem has led to a huge ...investment in new technologies and capabilities that are well adapted to dealing with the sorts of human-generated logs, videos, texts, and other large-data artifacts that are processed and resulted in an explosion of useful platforms and languages (Hadoop, Spark, Pandas, etc.). However, translating this work from the enterprise space to the computational science and HPC community has proven somewhat difficult, in part because of some of the fundamental differences in type and scale of data and timescales surrounding its generation and use. We describe a forward-looking research and development plan which centers around the concept of making Input/Output (I/O) intelligent for users in the scientific community, whether they are accessing scalable storage or performing in situ workflow tasks. Much of our work is based on our experience with the Adaptable I/O System (ADIOS 1.X), and our next generation version of the software ADIOS 2.X 1.
We present a measurement of the cross sections for the associated production of a W boson with at least one heavy quark jet, b or c, in proton-antiproton collisions. Data corresponding to an ...integrated luminosity of 8.7 fb(-1) recorded with the D0 detector at the Fermilab Tevatron p (p) over bar Collider at root s = 1.96 TeV are used to measure the cross sections differentially as a function of the jet transverse momenta in the range 20 to 150 GeV. These results are compared to calculations of perturbative QCD theory as well as predictions from Monte Carlo generators.
Clinical spectrum of AKI in chronic liver diseases Purohit, Dr. Ashish; Pahawa, Dr. Naresh; Vohra, Dr. Rubina ...
International Journal of Medical Research and Review,
4/2019, Letnik:
7, Številka:
2
Journal Article
We use a sample of diphoton + dijet events to measure the effective cross section of double parton interactions, which characterizes the area containing the interacting partons in proton-antiproton ...collisions, and find it to be σ eff = 19.3 ± 1.4 ( stat ) ± 7.8 ( syst ) mb . The sample was collected by the D0 detector at the Fermilab Tevatron collider in p$\bar{p}$ collisions at √ s = 1.96 TeV and corresponds to an integrated luminosity of 8.7 fb - 1 .
INTRODUCTION: Historically, the 5-year overall survival (OS) for metastatic medulloblastoma (MMB) is less than 40%. The Milan Strategy of post-operative induction chemotherapy (IC) followed by ...hyperfractionated accelerated radiotherapy (HART) and response directed myeloablative high dose chemotherapy (HDC) or maintenance chemotherapy was reported in a study of 33 patients with MMB to improve 3-year OS to 77% (95% CI 61, 93) and 5-year OS to 73% (59, 87). We report the outcomes of patients treated using this strategy in UK centres. METHOD: Questionnaires were sent to all 20 UK paediatric oncology centres to collect retrospective data on treatment delivered, toxicity and survival with the Milan strategy. RESULTS: Between February 2009 and October 2011, 34 patients with MMB in 14 centres fulfilled the entry criteria of the original study. The median age at presentation was 7 years (range 3-15). Median interval from surgery to HART was 109 versus 85 days in the Milan series. The incidence of grade 3 haematological toxicities with IC and HDC was 83-100%. 16/16 patients who achieved CR by the end of therapy remain alive and in remission but only 3/18 with lesser responses are still alive (p < 0.0001). With follow up of 30-60 months, we estimate 3-year OS of 55% (95% Cl 38, 71). This result is outside the 95% CI of the Milan results and encompasses the historical result of 40%. We did not observe major late neurotoxicity. CONCLUSION: We did not replicate the improved results reported by the Milan group. The reasons could include differences in patient sub-groups and protocol compliance.
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