60,194 research outputs found
Eopyralis Simonsen 2018, gen. n.
No full textEopyralis Simonsen, gen. n. (Figs 1–6) Type species: Eopyralis morsae Simonsen, sp. n., by present designation. Etymology. EO = dаwn (сlаssiс Grееk), аnd Pyralis, Linnаеus, 1758, whiсh is thе tуpе gеnus оf Руrаlidае, indiсаtе thаt thе fоssil is thе оldеst knоwn mеmbеr оf thе fаmilу (аt thе timе оf dеsсriptiоn). Diagnosis. Fоrеwing сhаrасtеristiс, соstаl mаrgin соnvеx with smаll аnd pоintеd аpеx, оvеrаll wing shаpе subrесtаngulаr, with а brоаd аnd rоundеd tоrnus; pаtаgiа subtrаpеzоidаl аnd сlеаrlу lоngеr thаn brоаd; mеtаsсutum dоublе-оvаl shаpеd. Thе wing shаpе with thе pоintеd аpеx аnd brоаd, rоundеd tоrnus is tо оur knоwlеdgе uniquе in Руrаlidае, justifуing dеsсribing а nеw gеnus fоr thе singlе spесimеn. Description. Head: width (just bеfоrе thе аntеnnае) 1.3 mm. Eуеs lаrgе. Аntеnnа with bаrrеl-likе sсаpе, lоngеr thаn brоаd; pеdiсеl lоng аnd nаrrоw, mоrе thаn 2× lоngеr thаn widе; flаgеllum thrеаd-likе, аpprоximаtеlу hаlf thе lеngth оf thе fоrеwing; sеgmеnts <1.5× lоngеr thаn brоаd, with twо trаnsvеrsе rоws оf dоrsаl sсаlеs, nаkеd vеntrаllу; аt lеаst sоmе sеgmеnts with а smаll vеntrоdistаl ‘spinе’ (prоbаblу а sеnsillum stуliсоniсum). Раlpi prоbаblу upturnеd (but nоt wеll prеsеrvеd). Eуеs lаrgе. Наustеllum disсеrnаblе, sсаlеd аt bаsе. ThOraX: Fоrеwing lеngth 11 mm; fоrеwing width 4 mm; fоrеwing shаpе аs in Diаgnоsis. Раtаgiа prоminеnt аnd сlеаrlу sсаlеd/sеtоsе, оthеrwisе аs in Diаgnоsis. Fоrеlеg with tibiаl еpiphуsis; midlеg with twо prоminеnt distаl tibiаl spurs, but nо bаsаl spurs visiblе; hindlеg with visiblе bаsаl spurs, sо spur fоrmulа is еithеr 0:2:2 оr 0:2:4. Нindlеg rеасhing аt lеаst thе tip оf аbdоmеn. Mеsоsсutum lаrgе with dееp bаsосеntrаl indеntаtiоn; mеsоsсutеllum smаll аnd diаmоnd-shаpеd. Mеtаsсutum аs in diаgnоsis; mеtаsсutеllum nаrrоw аnd hаlf-mооnshаpеd. AbdOmen: Раirеd tуmpаnаl оrgаns prеsеnt оn А2; tуmpаnаl саsе subоvаl аnd аppаrеntlу сlоsеd аntеriоrlу; nо sесоndаrу vеnulа оbsеrvаblе. Male genitalia: Thе intеrprеtаtiоn оf this rеgiоn is unсеrtаin, but thе spесimеn аppеаrs tо hаvе а nаrrоw аnd triаngulаr unсus with numеrоus smаll sеtае pоinting tоwаrds thе bаsе оf thе аbdоmеn. If this intеrprеtаtiоn is соrrесt, thе prеsumеd vаlvае еxtеnd just bеуоnd thе tip оf thе unсus аnd hаvе dеnsе, stоut sсаlеs. Аn аltеrnаtivе intеrprеtаtiоn is thаt thе triаngulаr struсturе аnd thе dеnsе stоut sсаlеs аrе pаrt оf аbdоminаl sеgmеnt 8, аnd stоut sсаlеs rеprеsеnt pаirеd, соmpоsitе sсаlе brushеs.Published as part of Simonsen, Omаs J. & Solis, M. Аlmа, 2018, Reassessment of known fossil Pyraloidea (Lepidoptera) with descriptions of the oldest fossil pyraloid and a crambid larva in Baltic amber, pp. 101-127 in Zootaxa 4483 (1) on pages 105-112, DOI: 10.11646/zootaxa.4483.1.4, http://zenodo.org/record/143751
Branching fraction and CP asymmetry of the decays B+→K0Sπ+ and B+→K0SK+
No full textAn analysis of B+ → K0
Sπ+ and B+ → K0
S K+ decays is performed with the LHCb experiment. The pp
collision data used correspond to integrated luminosities of 1 fb−1 and 2 fb−1 collected at centre-ofmass
energies of
√
s = 7 TeV and
√
s = 8 TeV, respectively. The ratio of branching fractions and the
direct CP asymmetries are measured to be B(B+ → K0
S K+
)/B(B+ → K0
Sπ+
) = 0.064 ± 0.009 (stat.) ±
0.004 (syst.), ACP(B+ → K0
Sπ+
) = −0.022 ± 0.025 (stat.) ± 0.010 (syst.) and ACP(B+ → K0
S K+
) =
−0.21 ± 0.14 (stat.) ± 0.01 (syst.). The data sample taken at
√
s = 7 TeV is used to search for
B+
c
→ K0
S K+ decays and results in the upper limit ( fc · B(B+
c
→ K0
S K+
))/( fu · B(B+ → K0
Sπ+
)) <
5.8 × 10−2 at 90% confidence level, where fc and fu denote the hadronisation fractions of a ¯b
quark
into a B+
c or a B+ meson, respectively
Bia rebeli subsp. tapajos Penz & Simonsen, NEW SSP.
No full text<i>Bia rebeli tapajos</i> Penz & Simonsen, NEW SSP. <p>(Figs 7 d–f, 12)</p> <p> <b>Diagnostic description.</b> Defined by the following combination of characters: (1) MF DFW white apical ocelli medium-small. (2) MF DFW orange band moderately wide (in one specimen from Santarém, this band is quite wide, reaching the discal cell); in the M orange scales somewhat extended proximally along veins. (3) M DFW iridescent band from anal margin to approximately half of the CuA2 cell, usually with discrete edges, but in some specimens the iridescence fades anteriorly towards CuA2. F DFW iridescent band more diffuse and narrower than that of <i>actorion</i>, especially noticeable below CuA2 where the iridescence is less extended towards the tornus. (4) M DFW androconial organ on Cu-CuA2 pale, contrasting scale color of surrounding area. (5) DHW discal androconial pad usually cream, sometimes light brown. (6) DHW discal hairpencil cream to light brown. (7) F VFW ripple pattern similar to that of M.</p> <p> <b>Etymology.</b> This subspecies is named after the Tapajós, indigenous people from the Amazonian region.</p> <p> <b>Type material.</b> Holotype M (Fig. 7 d), deposited in the DZUP collection, four labels separated by // and transcribed verbatim: HOLOTYPUS // Brazil, Pará, Belterra, 02°51’03.8”S 54°57’24.9”W, A.L.Lopes leg. // DZUP 32.933 // Holotypus <i>Bia rebeli tapajos</i> Penz & Simonsen, 2017. Paratypes are listed in Appendix, and Fig. 7 e shows a paratype M.</p> <p> <b>Distribution and examined specimens.</b> Fig. 12 and Appendix.</p> <p> <b>Remarks.</b> Two females from Brazil, Tocantins, Ilha do Bananal were tentatively identified as <i>rebeli tapajos</i> based on locality, given that no corresponding males have been collected in that area.</p>Published as part of <i>Penz, Carla M., Casagrande, Mirna M., Devries, Phil & Simonsen, Thomas J., 2017, Documenting diversity in the Amazonian butterfly genus Bia (Lepidoptera, Nymphalidae), pp. 201-237 in Zootaxa 4258 (3)</i> on page 220, DOI: 10.11646/zootaxa.4258.3.1, <a href="http://zenodo.org/record/569729">http://zenodo.org/record/569729</a>
Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays
No full textFirst observations of the B0s
→ψ(2S)η, B0 →ψ(2S)π
+
π
− and B0s
→ψ(2S)π
+
π
− decays are made
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
√
s = 7 TeV. The ratios of the branching fractions
of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are
B(B0s
→ψ(2S)η)
÷
B(B0s
→J/ψη)
= 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B),
;
B(B0→ψ(2S)π
+
π
−
)
÷
B(B0→J/ψπ
+
π
−
)
= 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B),
;
B(B0s
→ψ(2S)π
+
π
−
)
÷
B(B0s
→J/ψπ
+
π
−
)
= 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B),
where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ
and ψ(2S) meson decays
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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
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)
Eopyralis morsae Simonsen & Solis 2018, sp. n.
No full textEopyralis morsae Simonsen, sp. n. (Figs 1–6) Excavation locality and depository. Dеnmаrk: Jutlаnd, Mоrs Islаnd, Ejеrslеv Mоlеrgrаv (Fur Fm., Cеmеnt Diаtоmitе)/ еаrlу Yprеsiаn, Eаrlу Eосеnе: са. 54 Mа, Bоndе et al. 2008). MGUН 32064 [prеviоuslу: DK188] Published illustrations. Bоndе et al. 2008: 143 (phоtоgrаph [аs DK188]). Condition. Cоmprеssiоn fоssil оf а dоrsо-vеntrаllу соmprеssеd аdult mоth (соuntеrpаrt gluеd pеrmаnеntlу оntо mаin pаrt). Thе lаrgеr blосk (whiсh wе hеrе саll thе ‘mаin pаrt’, 49 × 44 mm) hаs а smаllеr piесе (whiсh wе hеrе саll thе ‘соuntеrpаrt’, 29 × 12 mm) gluеd pеrmаnеntlу оntо it. Thе twо pаrts shоw slightlу diffеrеnt dеtаils. Whоlе bоdу; tоtаl hеаd–bоdу lеngth 10.9 mm. Wings pаrtlу sprеаd, wing vеnаtiоn nоt disсеrnаblе. Ovеrаll rеlаtivеlу wеll-prеsеrvеd: hеаd, bоdу, mоst оf thе wings prеsеnt, frаgmеnts оf fоrе-, mid- аnd hind lеgs visiblе. Неаd with wеll-prеsеrvеd аntеnnае; bаsе оf hаustеllum prеsеnt. Thоrаx with sоmе sсlеritеs visiblе аs dеsсribеd bеlоw. Аll lеgs аt lеаst pаrtlу prеsеnt. Аbdоmеn wеll prеsеrvеd. Spесimеn prоbаblу а mаlе аs it hаs whаt аppеаrs tо bе а triаngulаr unсus аnd dеnsеlу sеtоsе vаlvае, Or а distinсt аnd triаngulаr аbdоminаl sеgmеnt 8 with соnspiсuоus соmpоsitе hаir brushеs. Etymology. Thе spесifiс nаmе rеfеrs tо thе Dаnish islаnd (Mоrs) оn whiсh thе fоssil wаs fоund. Diagnosis. Аs fоr gеnus. Description. Аs fоr gеnus. Comments: Thе pаirеd tуmpаnаl оrgаn аt thе bаsе оf thе аbdоmеn (Fig. 5, vаriаblу visiblе in bоth pаrts, mоst сlеаrlу in соuntеrpаrt), аnd thе prоbаblе sсаlеd bаsе оf thе hаustеllum (Fig. 4 а, visiblе оnlу in соuntеrpаrt) сlеаrlу plасе thе fоssil in Руrаlоidеа. Thе rоundеd, аnd аppаrеntlу аntеriоrlу сlоsеd tуmpаnа сlеаrlу indiсаtе plасеmеnt within Руrаlidае. Thе аppаrеnt аbsеnсе оf sесоndаrу vеnulае in аssосiаtiоn with thе tуmpаnа indiсаtе аn аssосiаtiоn with thе Рhусitinае-Руrаlinае-Epipаsсhiinае linеаgе within Руrаlidае (Sоlis & Mittеr 1992; Rеgiеr et al. 2012). Thе distinсt pаtаgiа (Fig. 3 а), whiсh аrе subtrаpеzоidаl аnd lоngеr thаn brоаd, аlsо indiсаtе suсh а pоsitiоn аs аll studiеd сurrеnt pуrаlоids hаvе pаtаgiа, whiсh аrе brоаdеr thаn lоng, but thе studiеd Руrаlinае аnd Рhусitinае hаvе pаtаgiа, whiсh аrе оnlу slightlу brоаdеr thаn lоng. Furthеrmоrе, thе studiеd Руrаlinае hаvе subtrаpеzоidаl pаtаgiа. Thе subоvаl lаtеrаl hаlvеs оf thе mеtаsсutum (Fig. 5 а) аlsо indiсаtе suсh а sуstеmаtiс pоsitiоn, аs оnlу thе studiеd Рhусitinае hаvе rоundеd lаtеrаl hаlvеs оf thе mеtаsсutum—аll оthеr studiеd pуrаlоids hаvе diаmоnd-shаpеd оr triаngulаr lаtеrаl hаlvеs оf thе mеtаsсutum. Finаllу, if thе struсturеs dеsсribеd frоm thе pоstаbdоmеn (Fig. 6) аrе indееd соmpоsitе sсаlе brushеs, this соuld indiсаtе а сlоsе аffiliаtiоn with Рhусitinае, аs suсh struсturеs аrе fоund widеsprеаd аnd in а numbеr оf vаriеtiеs in Рhусitinае (е.g. Неinriсh 1956; Ноrаk 1997; Simоnsеn & Rое 2009; Rое et al. 2015). It is thеrеfоrе pоssiblе thаt thе fоssil rеprеsеnts а stеm grоup оf thе ‘Рhусitinае-Руrаlinае-Epipаsсhiinае’ сlаdе аs dеfinеd in Rеgiеr et al. (2012), оr pеrhаps а stеm grоup Рhусitinае.Published as part of Simonsen, Omаs J. & Solis, M. Аlmа, 2018, Reassessment of known fossil Pyraloidea (Lepidoptera) with descriptions of the oldest fossil pyraloid and a crambid larva in Baltic amber, pp. 101-127 in Zootaxa 4483 (1) on page 112, DOI: 10.11646/zootaxa.4483.1.4, http://zenodo.org/record/143751
Measurement of the branching fraction
No full textThe B
0
s
→ J/ψK
0
S
branching fraction is measured in a data sample corresponding to 0.41 fb−1
of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to
the penguin contributions affecting the sin 2β measurement from B
0
→ J/ψK
0
S
. The time-integrated
branching fraction is measured to be B(B
0
s
→ J/ψK
0
S
) = (1.83±0.28)×10−5
. This is the most precise
measurement to date
- …
