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Searches for B0(s)→J/ψppˉ and B+→J/ψppˉπ+ decays
Get PDFThe results of searches for B0(s)→J/ψ pp¯ and B + → J/ψ p p¯ π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B0s→J/ψ pp¯ and an upper limit on the branching fraction is set at the 90 % confidence level: B(B0s→J/ψ pp¯) < 4.8 × 10−6, which is the first such limit. No significant signals are seen for B0 → J/ψ pp¯ and B+ → J/ψ pp¯ π + decays, for which the corresponding limits are set: B(B0→J/ψ pp¯) < 5.2 × 10−7, which significantly improves the existing limit; and B(B+→J/ψ pp¯π+) < 5.0 × 10−7, which is the first limit on this branching fraction
Vapor-liquid equilibrium of carbon dioxide with ethyl caproate, ethyl caprylate and ethyl caprate at elevated pressures
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A positive mass theorem in three dimensional Cauchy-Riemann geometry
Get PDFWe define an ADM-like mass, called p-mass, for an asymptotically flat
pseudohermitian
manifold. The p-mass for the blow-up of a compact pseudohermitian
manifold (with no boundary) is
identified with the first nontrivial coefficient in the expansion of the G
reen function for the CR Laplacian.
We deduce an integral formula for the p-mass, and we reduce its po
sitivity to a solution of Kohn’s
equation. We prove that the p-mass is non-negative for (blow-ups
of) compact 3-manifolds of positive
Tanaka-Webster class and with non-negative CR Paneitz operator
. Under these assumptions, we also
characterize the zero mass case as the standard three dimension
al CR sphere. We then show the existence
of (non-embeddable) CR 3-manifolds having nonpositive Paneitz ope
rator or negative p-mass through a
second variation formula. Finally, we apply our main result to find solut
ions of the CR Yamabe problem
with minimal energ
Phortica (Ashima) pavriarista Cheng & Chen 2008
No full text14) Phortica (Ashima) pavriarista Cheng & Chen, 2008 Phortica (Phortica) pavriarista Cheng & Chen in Cheng et al., 2008: 620. Phortica speculum (Maca & Lin, 1993): Chen et al., 2005b: 420 (part, misidentification). Phortica (Ashima) pavriarista: Chen & Máca, 2012: 507. Diagnosis. Arista only very slightly expanded apically (“Fig. 14” in Cheng et al. 2008); all postgonites strongly sclerotized, apically more or less pointed; posterior postgonite on only one lateral lobe of aedeagal sheath; lateral lobes submedially separated from each other; one lateral lobe of aedeagal sheath with 2 relatively close anterior postgonites (“Fig. 17” in Cheng et al. 2008). Supplementary description (not repeating characters common to P. foliiseta). Supracervical setae 12–14. Dorsomedial, tentorial apodeme 1/2 as long as basal, parallel portion of dorsolateral, tentorial apodeme. Longest, dorsal branch of arista shorter than longest seta on pedicel. Cibarial, medial sensilla 9–10 per side; posterior sensilla 4–6 per side. All tarsi with gray tarsomere V. The antisymmetry is observed in the postgonites: in A-type, the left lateral lobe bears 2 anterior postgonites, and the right lobe 1 posterior and 1 anterior postgonites (“Fig. 17” in Cheng et al. 2008); but in B-type, vice versa. Specimen examined. Thailand: 1♂ (B-type), above Sangwal, Doi Suthep, Chiang Mai, 1,250 m a.s.l., 6.i.2008, H. Bänziger leg. (SEHU). Distribution. China (Yunnan), Thailand *. Remarks. This species resembles P. andreagigoni in having the less expanded apex of arista, but can be distinguished from it by the diagnostic characters.Published as part of Toda, Masanori J., Bänziger, Hans, Sati, Pradeep C., Fartyal, Rajendra S., Suwito, Awit & Katoh, Toru, 2020, Taxonomy and evolution of asymmetric male genitalia in the subgenus Ashima Chen (Diptera: Drosophilidae: Phortica Schiner), with descriptions of seven new species, pp. 1-54 in Zootaxa 4789 (1) on page 20, DOI: 10.11646/zootaxa.4789.1.1, http://zenodo.org/record/388461
Effects of acidity and molybdate concentration on the kinetics of the formation of the phosphoantimonylmolybdenum blue complex
No full textSingaporean mothers' perception of their three-year-old child's weight status: A cross-sectional study
Get PDFSingapore National Research Foundation; National Medical Research Council (NMRC), SingaporeFull Author List: Cheng T.S.; Cheng T.; Loy S.; Cheung Y.; Chan J.; Tint M.; Godfrey K.; Gluckman P.; Kwek K.; Saw S.; Chong Y.; Lee Y.; Yap F.; Lek N.; Sheppard A.; Chinnadurai A.; Goh A.; Rifkin-Graboi A.; Qiu A.; Biswas A.; Lee B.; Broekman B.; Quah B.; Shuter B.; Chng C.; Ngo C.; Hsu S.; Bong C.; Henry C.; Chee C.; Fok D.; Yeo G.; Inskip H.; Chen H.; Van Bever H.; Magiati I.; Wong I.; Lau I.; Kapur J.; Richmond J.; Holbrook J.; Gooley J.; Tan K.; Niduvaje K.; Singh L.; Su L.; Daniel L.; Shek L.; Fortier M.; Hanson M.; Chong M.; Rauff M.; Chua M.; Meaney M.; Teoh O.; Wong P.; Agarwal P.; Van Dam R.; Rebello S.; Chong S.; Cai S.; Soh S.; Lim S.; Rajadurai V.; Stunkel W.; Han W.; Pang W.; Goh Y.; Chan Y.</p
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Observation of ψ (3686) →p p ̄ η′ and improved measurement of J /ψ →p p ̄ η′ OBSERVATION of ... M. ABLIKIM et al
No full textWe observe the process psi(3686) -> p (p) over bar eta' for the first time, with a statistical significance higher than 10 sigma, and measure the branching fraction of J/psi -> p (p) over bar eta' with an improved accuracy compared to earlier studies. The measurements are based on 4.48 x 10(8) psi(3686) and 1.31 x 10(9) J/psi events collected by the BESIII detector operating at the BEPCII. The branching fractions are determined to be B(psi(3686) -> p (p) over bar eta') = (1.10 +/- 0.10 +/- 0.08) x 10(-5) and B(J/psi -> p (p) over bar eta' = (1.26 +/- 0.02 +/- 0.07) x 10(-4), where the first uncertainties are statistical and the second ones systematic. Additionally, the eta - eta' mixing angle is determined to be -24 degrees +/- 11 degrees based on psi(3686) -> p (p) over bar eta', and -24 degrees +/- 9 degrees based on J/psi -> p (p) over bar eta', respectively
The causal induction from the theory of causal power of Cheng
No full textUna de las teorías centrales dentro de la explicación de la inducción causal (i.e. el proceso de inferencia que permite a las personas identificar causas en la cotidianidad) es la Teoría del Poder Causal que Patricia Cheng desarrolló en 1997 y que ha venido defendiendo desde esa época (Cheng, 1997; Holyoak y Cheng, 2011). Dicha teoría pretende superar los tradicionales modelos de mecanismo y los simples modelos de covariación que hasta el momento se consideraban como la explicación del proceso de inducción causal. Sin embargo la complejidad del modelo matemático que la sustenta la ha hecho poco accesible a la comunidad no especializada que se pueda interesar en este campo. El propósito del presente artículo es, entonces, realizar una introducción a la teoría de poder causal en la que se muestra no sólo sus ventajas explicativas frente a los otros modelos, sino una reconstrucción sencilla del modelo matemático que la sustenta.One of the central theories within the explanation of the causal induction (i.e. , the inference process that allows the people identify causes in the everyday life) is the Theory of Causal Power that Patricia Cheng development in 1997 and that has been advocating since that time (Cheng, 1997; Holyoak &amp; Cheng, 2011). This theory seeks to overcome the traditional mecha-nism models and simple models of co that until the time they were considered as an explanation of the process of causal induction. However the complexity of the mathematical model that sustains them has done little accessible to the non-specialized community that may be of interest in this field. The purpose of this article is, then, make an introduction to the Theory of Causal Power that shows not only its ex-planatory advantages compared to other models, but a simple reconstruction of the mathematical model that underpins it
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