86,052 research outputs found
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Calycibidion rubricolle Galileo and Martins 2010, new species
No full text<i>Calycibidion rubricolle</i> Galileo and Martins, new species <p>(Figure 3)</p> <p> <b>Description.</b> Head black. Frons smooth with depressed areas in front of the antennal tubercles; longitudinal corrugations between the tubercles. Vertex sparsely punctate. Upper ocular lobes with three rows of ommatidia. Antennae black surpassing the elytral apices in the middle of antennomere IX. Scape microsculptured with sparse punctures.</p> <p>Prothorax reddish. Pronotum with a brownish band along the anterior margin; punctures sparse. Prothorax and prosternum sides punctate. Mesosternum and metasternum reddish. Mesepisterna, mesepimera, metepisterna and a narrow band on the sides of the metasternum microsculptured. Metasternum central region punctate with long, sparse hairs.</p> <p>Elytra (Figure 3) reddish-orange until slightly after the middle and black in the remaining portion. Coarsely, deeply and densely punctate throughout the entire surface, with erect and long hairs, organized in rows. Elytral apices emarginated; marginal spine longer and sharper than the sutural one.</p> <p>Legs black, except coxae and base of femur, which are reddish; apical tarsomeres reddish-brown. Femurs with sparse punctures. Tibiae hairy and carinated.</p> <p>Urosternites black, except at the basal half of I, which is reddish-brown; sparsely punctate with long hairs.</p> <p>Measurements in mm. Total length, 7.9-8.6; prothorax length, 1.8-1.9; largest prothoracic width, 1.2- 1.3; elytra length, 5.0-5.7; humeral width, 1.7-1.8.</p> <p> <b>Type material.</b> Male holotype, BRAZIL, <i>Bahia</i>: São Félix do Coribe-Coribe, (km 24, 13 o 33’S 4415’W, 493 m), 07.XII.2007, A. M. Silva-Neto col. (UEFS); male paratype, same data of the holotype, F. Bravo col. (MZSP).</p> <p> <b>Etymology.</b> Latin, <i>rubrus</i> = red; <i>collum</i> = neck; allusion to the red prothorax.</p> <p> <b>Diagnosis.</b> <i>Calycibidion rubricolle</i> sp. nov. is similar to <i>C. turbidum</i> Napp and Martins, 1985 concerning the elytral apices with two spines. It is distinguished by its black head and reddish pronotum; black antennae; black legs with coxae and femur bases reddish. The head and prothorax of <i>C. turbidum</i> are black; the pedicels, the flagellomeres and the legs are brownish.</p>Published as part of <i>Galileo, Maria Helena M. & Martins, Ubirajara R., 2010, New species of Cerambycinae (Coleoptera, Cerambycidae) from South America, pp. 1-9 in Insecta Mundi 2010 (115)</i> on pages 4-5, DOI: <a href="http://zenodo.org/record/5164338">10.5281/zenodo.5164338</a>
Oncideres glebulenta Martins 1981
No full text39. Oncideres glebulenta Martins, 1981 Oncideres glebulenta Martins, 1981 b: 231. Distribution. Brazil (Goiás, São Paulo), Argentina (Misiones). Specimen examined. BRAZIL, Rio de Janeiro: Itatiaia (Parque Nacional do Itatiaia), 750 m, 1 male, 11– 13.XI. 2011, J.P. Botero, V. Machado, A. Carelli, M. Cupello, M. Simões & R. Souza col.Published as part of Botero, Marcela L. Monné Miguel A. Monné Juan P. & Carelli, Allan, 2016, Two new species and new records of Cerambycidae (Insecta, Coleoptera) from Itatiaia National Park, Rio de Janeiro, Brazil, pp. 339-356 in Zootaxa 4137 (3) on page 354, DOI: 10.11646/zootaxa.4137.3.3, http://zenodo.org/record/25666
Minibidion perfectum Martins & Galileo, 2011, sp. nov.
No full text<i>Minibidion perfectum</i> sp. nov. <p> <b>(Fig. 7)</b></p> <p> <i>Etimologia:</i> Latim, perfectus = perfeito, acabado.</p> <p>Cabeça castanho-avermelhada. Região entre os tubérculos anteníferos com pontos próximos. Vértice liso na região central. Escapo preto-avermelhado. Antenômero III com sulco raso. As antenas alcançam o ápice dos élitros no meio do antenômero VIII.</p> <p>Protórax castanho-avermelhado. Pronoto com pontos rasos e densos, microesculturados no interior (50x). Esternos torácicos avermelhados. Região central do metasterno pouco mais escurecida, com pontos em toda a superfície.</p> <p>Élitros castanho-escuros com os ápices amarelados e grande mancha dorsal, amarelada, do quinto anterior ao terço apical, que não toca a margem nem a sutura; pontuados em toda a superfície. Extremidades elitrais ligeiramente emarginadas, com curta projeção externa.</p> <p>Fêmures pretos com a base alaranjada. Tíbias e tarsos alaranjados. Urosternitos avermelhados.</p> <p> <i>Dimensões em mm:</i> Comprimento total, 4,8; comprimento do protórax, 1,0; maior largura do protórax, 0,7; comprimento do élitro, 3,1; largura umeral, 1,0.</p> <p> <i>Material-tipo:</i> Holótipo macho, BOLÍVIA, <i>Santa Cruz:</i> Província Florida, Bermejo (4 km N, Refúgio los Volcanes, 18°06’S, 63°36’W, 1.045 a 1.200 m), 28.X-05.XI.2007, S.W. Lingafelter col., MV / UV lights (MNKM).</p> <p> <i>Discussão: Minibidion perfectum</i> sp. nov. caracteriza-se pelos élitros acastanhados com grande mancha amarelada dorsal e ápices elitrais amarelados. Na chave para as espécies (Martins & Galileo, 2007), é discriminada com <i>M. unifasciatum</i> Martins & Galileo, 2007 pelo pronoto sem pubescência serícea na base e com pontuação visível e pelos fêmures acastanhados e com a base amarelada. Em <i>M. unifasciatum</i> os élitros são amarelados com faixa oblíqua anteapical, preta.</p>Published as part of <i>Martins, Ubirajara R. & Galileo, Maria Helena M., 2011, Novas Espécies De Cerambycinae (Cerambycidae, Coleoptera) Da Região Neotropical, pp. 189-195 in Papéis Avulsos de Zoologia 51 (11)</i> on page 194, DOI: 10.1590/s0031-10492011001100001, <a href="http://zenodo.org/record/10085960">http://zenodo.org/record/10085960</a>
Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′
No full textFirst evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)
Tropidion argentina Galileo and Martins 2010, new species
No full text<i>Tropidion argentina</i> Galileo and Martins, new species <p>(Figure 4)</p> <p> <b>Description.</b> Head reddish-brown, covered by a yellowish pilosity. Antennal tubercles projecting. Antennae reddish-brown, reaching elytral apices (males) at the tip of antennomere VII. Scape subpyriform, without a basal groove. Antennomere III carinate, slightly longer than IV.</p> <p>Prothorax reddish-brown, longer than wide. Pronotum covered with sericeous pubescence, except in a center-longitudinal area and in a longitudinal band on each side; oblique branches begin at the anterior extremity of lateral bands, reaching the anterior one-third of the central-longitudinal band. Middle of pronotum with a central tubercle and a discrete gibosity on each side. Lateral portions of the prothorax smooth and shining. Prosternum with pubescence bands, prolonged up to the middle. Mesosternum and metasternum reddish. Scutellum covered by a whitish pubescence.</p> <p>Elytra (Figure 4) reddish-brown; each one with a lateral yellowish spot on the anterior one-third. Numerous hairs throughout the entire elytra, poorly organized in rows. Elytral apices rounded.</p> <p>Femora reddish-brown, clearer at the peduncles and sparsely pubescent. Urosternites reddish-brown.</p> <p>Measurements in mm. Total length, 10.6; prothorax length, 2.4; largest prothoracic width, 1.6; elytra length, 7.0; humeral width, 2.0.</p> <p> <b>Type material.</b> Male holotype, ARGENTINA, <i>La Rioja</i>: Castro Barros (Santa Vera Cruz, 28 o 67’ S 66 o 96’W, 1600 m), 15.II.2005, L. Stange col. (FSCA).</p> <p> <b>Etymology.</b> Latin, <i>rubrus</i> = red; <i>collum</i> = neck; allusion to the red prothorax.</p> <p> <b>Diagnosis.</b> <i>Tropidion argentina</i> sp. nov. is similar to <i>T. intermedium (</i> Martins, 1962) concerning unarmed elytral apices, but it is distinguished by its general reddish-brown coloring, having a yellow spot on the elytra, and by the pronotum, which presents three tubercles. On <i>T. intermedium</i>, the elytra are yellowish and without spots, the appendices are reddish and the pronotum presents five tubercles.</p>Published as part of <i>Galileo, Maria Helena M. & Martins, Ubirajara R., 2010, New species of Cerambycinae (Coleoptera, Cerambycidae) from South America, pp. 1-9 in Insecta Mundi 2010 (115)</i> on page 5, DOI: <a href="http://zenodo.org/record/5164338">10.5281/zenodo.5164338</a>
Cearagrylloides microcephalus Martins-Neto, n. comb.
No full textCearagrylloides microcephalus Martins-Neto, n. comb. (Figs. 2 B, E, G) 1. Cearagryllus microcephalus Martins-Neto, 1991. Specimens included. GP/ 1 T- 1680 (holotype), RGMN- 203, CV- 1699, and RGMN- 40 (510) New supplementary material. RGMN- 508. Emended diagnosis. Females with robust body, varying from 24 to 26 mm length; fore wing length varying from 24 to 28 mm; ovipositor length around 38 mm. Ovipositor 1.6 times longer than the body and/or the fore wing length. Head notably small, laterally elongated. ScP straight, not thickened; R parallel to ScP. MP unbranched; around six MP 2 secondary branches. r-m indistinct. Discussion. The specimen CV- 1699, with incompletely preserved ovipositor, was initially interpreted as belonging to the species Cearagryllus perforatorius (Martins-Neto, 1991), based just on the body and wing length. However, after re-examination of the venation of this specimen, it is now possible to verify that it belongs to Cearagrylloides microcephalus. In addition to the original characters assigned to the species (smaller body and head, longer ovipositor), the fore wing provided other important characters. In C. perforatorius ScP is sigmoid, distally divergent and basally thickened, in contrast to C. microcephalus, which exhibits a straight ScP, not thickened. Additionally, MA has typically three anterior secondary branches, not present in C. microcephalus. Another minor difference is a smaller number of MP secondary branches.Published as part of Martins-Neto, Rafael Gioia & Tassi, Lara Vaz, 2009, The Orthoptera (Ensifera) from the Santana formation (Early Cretaceous, Northeast Brazil): A statistical and paleoecological approach, with description of new taxa, pp. 21-37 in Zootaxa 2080 on page 28, DOI: 10.5281/zenodo.18734
Nepagyrtes piriana Martins & Galileo 1998
No full text198. <i>Nepagyrtes piriana</i> Martins & Galileo, 1998 <p> <i>Nepagyrtes piriana</i> Martins & Galileo, 1998a: 261.</p> <p> <b>Type locality.</b> Brazil, Minas Gerais: Santa Bárbara (Serra do Caraça, Fazenda Engenho, 800 m). <b>Distribution.</b> Brazil (Minas Gerais).</p> <p>Described from Serra de Caraça (Martins & Galileo, 1998a: 261).</p>Published as part of <i>Monné, Miguel A., 2017, New species and new records of Cerambycidae (Insecta, Coleoptera) from RPPN Sanctuary of Caraça, Minas Gerais, Brazil, pp. 201-262 in Zootaxa 4319 (2)</i> on page 242, DOI: 10.11646/zootaxa.4319.2.1, <a href="http://zenodo.org/record/889107">http://zenodo.org/record/889107</a>
Suipinima eccentrica Galileo & Martins 1992
No full textSuipinima eccentrica (Galileo & Martins, 1992) (Figs. 14–16) Antodice eccentrica Galileo & Martins, 1992: 142, fig. 3; Martins & Galileo, 1998: 41; Monné, M. A., 2005: 229 (cat.); Monné, M. A., 2015 b: 349 (cat.). Suipinima excentrica, Martins & Galileo, 2004, 398. Geographical distribution. Ecuador, Pichincha (Santo Domingo) (CMNC). Remarks. Although the first time Antodice eccentrica Galileo & Martins, 1992 appeared in combination with Suipinima was in the key to the species of this genus presented by Martins & Galileo (2004) (misspelled as “ S. excentrica ”), those authors did not explicitly the generic transference and therefore the new combination. This may have prompted later authors (Bezark 2014; Monné, 2005; Monné 2015 b) to ignore this transference, which we confirm here.Published as part of Nascimento, Francisco E. De L., Botero, Juan Pablo & Bravo, Freddy, 2016, Checklist of the Cerambycidae (Insecta, Coleoptera) from central Bahia State (Brazil), with the description of two new species and new geographic records, pp. 555-568 in Zootaxa 4109 (5) on page 564, DOI: 10.11646/zootaxa.4109.5.4, http://zenodo.org/record/26566
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