139 research outputs found
Measurement of the ratio of prompt χ c to J / ψ production in pp collisions at √s = 7 TeV
No full textThe prompt production of charmonium χ c and J / ψ states is studied in proton-proton collisions at a centre-of-mass energy of √s = 7 TeV at the Large Hadron Collider. The χ c and J / ψ mesons are identified through their decays χ c → J / ψ γ and J / ψ → μ + μ - using 36 pb - 1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for χ c and J / ψ, σ (χ c → J / ψ γ) / σ (J / ψ), is determined as a function of the J / ψ transverse momentum in the range 2 < p T J / ψ < 15 GeV / c. The results are in excellent agreement with next-to-leading order non-relativistic expectations and show a significant discrepancy compared with the colour singlet model prediction at leading order, especially in the low p T J / ψ region
Prompt charm production in pp collisions at √<span style="text-decoration:overline">s</span>=7 TeV
No full textCharm production at the LHC in pp collisions at s√=7 TeV is studied with the LHCb detector. The decays D0→K−π+, D+→K−π+π+, D⁎+→D0(K−π+)π+, D+s→ϕ(K−K+)π+, Λ+c→pK−π+, and their charge conjugates are analysed in a data set corresponding to an integrated luminosity of 15 nb−1. Differential cross-sections dσ/dpT are measured for prompt production of the five charmed hadron species in bins of transverse momentum and rapidity in the region 0<pT<8 GeV/c and 2.0<y<4.5. Theoretical predictions are compared to the measured differential cross-sections. The integrated cross-sections of the charm hadrons are computed in the above pT-y range, and their ratios are reported. A combination of the five integrated cross-section measurements gives
σ(cc¯)pT<8 GeV/c,2.0<y<4.5=1419±12(stat)±116(syst)±65(frag) μb,
where the uncertainties are statistical, systematic, and due to the fragmentation functions
Measurement of the cross-section ratio σ(χc2)/σ(χc1) for prompt χc production at √s=7 TeV
No full textThe prompt production of the charmonium χc1 and χc2 mesons has been studied in proton–proton collisions at the Large Hadron Collider at a centre-of-mass energy of . The χc mesons are identified through their decays χc→J/ψγ with J/ψ→μ+μ− using 36 pb−1 of data collected by the LHCb detector in 2010. The ratio of the prompt production cross-sections for the two χc spin states, σ(χc2)/σ(χc1), has been determined as a function of the J/ψ transverse momentum, , in the range from 2 to 15 GeV/c. The results are in agreement with the next-to-leading order non-relativistic QCD model at high and lie consistently above the pure leading-order colour-singlet prediction
Chthonius densedentatus Beier 1938
No full textChthonius densedentatus Beier, 1938 (Figs 97–116, 406) Chthonius (Chthonius) rhodochelatus: Hadži 1933: 133, figs 3a–b, 6a (in part: Omisalj). Chthonius (Chthonius) densedentatus Beier, 1938: 5; Beier, 1939: 8, fig. 1. Chthonius (C.) tenuis stammeri: Beier 1942: 130 (in part: Zinzulusa cave). Chthonius (Globochthonius) ruffoi Caporiacco, 1951a: 4, fig. 2; Caporiacco 1951b: 64, 69; Caporiacco 1951c: 95, fig. 2 (n. syn.). Chthonius (Chthonius) stammeri ruffoi: Beier 1952: 104, fig. 1. Chthonius (C.) ischnocheles ruffoi: Beier 1963a: 254 (in part: Zinzulusa cave). Chthonius (C.) ischnocheles: Lazzeroni 1969b: 390 (in part, see C. agazzii and C. ischnocheles). Chthonius (C.) litoralis: Lazzeroni 1969b: 393, figs 1–2. Chthonius cfr. densedentatus: Callaini 1986a: 234, figs 1g –n. Chthonius (C.) ischnocheles ischnocheles: Callaini 1979a: 131, figs 1a–c (in part: Is. Salina, Malfa); 1986b: 523, figs 1c–d (in part: Buca delle Fate Cave). Chthonius (Chthonius) ischnocheles reductus: Inzaghi 1987: 180, figs 18–20. Chthonius (C.) ruffoi: Gardini & Oggianu 1992: 24, figs 16–22 (in part: Zinzulusa Cave; see C. nicolosii). Chthonius (Chthonius) cfr. ruffoi: Gardini et al. 1997: 220. Chthonius (Chthonius) rhodochelatus: Gardini 2004: 126, figs 1–7; Gardini 2009: 39; Turienzo et al. 2010: 575. Chthonius rhodochelatus: Červená et al. 2021: 8, fig. 3B. Type locality: Bosnia-Herzegovina, Popovo Polje, Pječaljina Pećina (44°48’N, 18°56’E). Distribution. France, Switzerland, Italy, Slovenia, Croatia, Bosnia and Herzegovina, Albania, Greece. Diagnosis (♂ ♀). An eyed epigean or locally hypogean Chthonius that differs from other species of the ischnocheles group in the following combination of characters: anterior margin of carapace with 2 (rarely 1) preocular microsetae on each side; posterior margin of carapace with 2 macrosetae and mostly with 1 lateral microseta on each side; chelicerae with 3 (rarely 2) lateral microsetae; chela length 0.73–1.18 mm; movable chelal finger length 0.46–0.77 mm; fixed and movable chelal fingers with 32–54 and 23–47 teeth respectively; chelal fingers with reclined, pointed, and moderately spaced teeth; both fixed and movable chelal fingers with 5–8 teeth occupying 0.1 mm at level of est-ist and st-t, distance between successive apices 0.011 –0.023 mm; movable chelal finger with coupled sensilla pc not on a tubercle; ratio of pedipalpal femur/carapace 1.1–1.45. Type material examined. BOSNIA and HERZEGOVINA — Ravno —“Piecaljna Pečina, b. Popovo-Polje”, “Balkan”, “ Chthonius densedentatus n. sp. det. Beier / Type! ♀ ” (NHMW). Other material examined. ALBANIA — Quarku i Vlorës — 2 ♀, Kardhikaq, 239 m a.s.l., 13. VIII.2019, J. Christophoryová leg., soil (DZCUB) CROATIA — Hrvatsko Zagorje — 1 ♀, Klana, N of Rijeka, 700 m a.s.l., 8. V.1992, F. Gasparo leg. Istria — 2 ♀, Pula, Medulin, Islet Tombolo, 23. VIII.1989, F. Stoch leg.; 3 ♀, Umag, 2 m a.s.l., F. Gasparo leg., pine wood. Primorje-Gorski Kotar — 4 ♂ (C. rhodochelatus, det. G. Gardini), Krk Island, Omisalj, 5 m a.s.l., 24.II.1991, F. Gasparo leg., oak wood on limestone. FRANCE — Ain — 2 ♂ 1 T, Bressan, St.-Chalamont-en-Dombes, 28.IV.1996, S. Vit leg., stump of Carpinus; 13 ♂ 14 ♀, Bressan, near SW of Villars-les-Dombes, 28.IV.1996, S. Vit leg., under Quercus; 2 ♂ 3 ♀ 2 T, Ferney Voltaire, near Moëns, 29.I.1996, S. Vit leg., mole lair; 3 ♂ 7 ♀ 6 T, near Versailleux, 28.IV.1996, S. Vit leg., sieved under Betula. Alpes-Maritimes — 4 ♂ 5 ♀ 2 T, Grasse, Saut du Loup, 20. VIII.1983, C. Torti & S. Zoia leg. Haute- Savoie — 1 ♂ 1 ♀, Monnetier-Mornex, Mornex ss. Salève, 600 m a.s.l., 20.III.1996, S. Vit leg. (together with 5 ♂ 10 ♀ of C. ischnocheles), leaf litter; 2 ♀ 3 T 1 D, id., 1. V.1998, S. Vit leg., rotten stump. ITALY — Venezia Giulia: Gorizia Prov . — 3 ♂ 6 ♀, Doberdò del Lago, Lago di Doberdò, 12.IV.1981, E. Bognolo leg.; 4 ♂ 3 ♀, id., 17.IV.1983, E. Bognolo leg. Venezia Giulia: Trieste Prov. — 1 ♀, Basovizza, slope of Monte Cocusso, 2. VI.2012, G. Gardini leg.; 1 ♂ 1 T, San Dorligo della Valle, 12.III.1989, E. Bognolo leg.; 3 ♂ 6 ♀, Sgonico, Borgo Grotta Gigante, 12.IX.1982, E. Bognolo leg.; 1 ♂, Sgonico, Sagrado di Sgonico, Carso triestino, 7.IV.1980, E. Bognolo leg.; 2 ♀, Sistiana, Costa dei Barbari, 2–5 m a.s.l., 12.IV.1992, F. Gasparo leg.; 1 ♂ 2 ♀, Trieste, Monte Spaccato, 400 m a.s.l., 16. VI.1996, C. Giusto, R. Regalin & S. Zoia leg. Friuli: Pordenone Prov. — 1 ♀ 1 T, Tramonti di Sotto, Campone, 2.X.1985, S. Zoia leg.; 2 ♂ 2 ♀, Zoppola, Parco Fluviale del Meduna, 10. VIII.1991, G. Governatori leg. Friuli: Udine Prov. — 1 ♀, Amaro, 350 m a.s.l., 8. V.1991, F. Gasparo leg., pitfall trap; 3 ♂ 3 ♀, Buttrio, 120 m a.s.l., 18.X.1990, F. Gasparo leg.; 1 ♀, Venzone, Piani, 270 m a.s.l., 9. VIII.1995, F. Gasparo leg., pitfall trap under Ostrya carpinifolia; 1 ♂ 1 ♀, Venzone, Pioverno, 250 m a.s.l., 14.VII.1992, F. Gasparo leg. (together with 3 ♀ of C. ischnocheles), Ostrya carpinifolia wood. Veneto: Belluno Prov . — 4 ♂ 5 ♀, Belluno, gravel bed of Fiume Piave, 10.X.1987, C. Giusto leg. Veneto: Padua Prov. — 2 ♂ 2 ♀, Cinto Euganeo, Valnogaredo, 250 m a.s.l., 25.III.2002, F. Gasparo leg., chestnut wood. Veneto: Treviso Prov . — 1 ♀, Borso del Grappa, Semonzo, 30. V.1992, F. Rigobello & B. Peruffo leg. (MNAV); 2 ♀ 1 T, id., 12.VII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 3 ♀, id., 2–23. VIII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂, id., 27.XII.1992, F. Rigobello & B. Peruffo leg. (MNAV). Veneto: Venice Prov. — 6 ♂ 6 ♀ 1 T, Caorle, Brussa, Valle Vecchia, 0–5 m a.s.l., 12. VIII.1999, P. Glerean leg., coastal pinewood. Veneto: Verona Prov . — 15 ♂ 12 ♀ 1 T (C. ischnocheles, det. G. Lazzeroni), Bosco Chiesanuova, Vajo dell’Anguilla, 2. V.1968, G. Lazzeroni, G. Osella & A. Montolli leg. (MSNV); 1 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), Bosco Chiesanuova, Tracchi, 19. VI.1968, G. Lazzeroni leg. (MSNV); 1 ♂ 4 ♀, Bussolengo, Parco Natura Viva, 28. VI.2003, Marzotto & S. Vanin leg.; 1 ♂ (C. ischnocheles, det. G. Lazzeroni), Cologna Veneta, 2.VII.1968, R. Gioco leg. (MSNV); 6 ♂ 10 ♀ (C. ischnocheles, det. G. Lazzeroni; together with 5 ♂ 3 ♀ of C. ischnocheles), id., 11.IX.1968, G. Lazzeroni & A. Montolli leg. (MSNV); 2 ♂ 6 ♀ 1 T (C. ischnocheles, det. G. Lazzeroni), Colognola ai Colli, 30.XI.1967, G. Osella & G. Lazzeroni leg. (MSNV); 2 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni; C. rhodochelatus, det. G. Gardini), Dolcè, top of Monte Pastello, 1127 m a.s.l., 28. V.1968, G. Lazzeroni, R. Gioco & A. Montolli leg. (MSNV); 1 ♂ 4 ♀ (C. rhodochelatus, det. G. Gardini), Dolcè, Ceraino, Monte Pastello, 500 m a.s.l., 24.IX.1999, A. Zanetti leg., Fagus sylvatica wood; 40 ♂ 4 ♀ 1 T (C. ischnocheles, det. G. Lazzeroni), Fumane, between Breonio and Sant’Anna d’Alfaedo, 28. V.1968, G. Lazzeroni leg. (MSNV); 5 ♂ (C. ischnocheles, det. G. Lazzeroni; together with 1 ♀ of C. ischnocheles), between Garda and Punta San Vigilio, 4. VI.1968, G. Lazzeroni & A. Montolli leg. (MSNV); 5 ♂ 3 ♀ (C. ischnocheles, det. G. Lazzeroni; together with 2 ♂ of C. agazzii), Grezzana, N slope of Vajo del Paradiso, 27.III.1968, G. Lazzeroni & G. Osella leg. (MSNV); 8 ♂ 11 ♀, Grezzana, Vajo del Paradiso, 27.II.1972, leg.?; 4 ♂ 3 ♀ 2 T, Legnago, floodplain of Fiume Adige, 15.VII.2009, D. Avesani et al. leg. (MSNV); 1 ♂ 3 ♀ 1 T, id., 29.VII.2009, D. Avesani et al. leg. (MSNV); 3 ♂ 1 ♀, id., 12. VIII.2009, D. Avesani et al. leg. (MSNV); 4 ♀, id., 26. VIII.2009, D. Avesani et al. leg. (MSNV); 5 ♂ 13 ♀ 1 T, id., 9.IX.2009, D. Avesani et al. leg. (MSNV); 5 ♂ 19 ♀ 25 T, id., 23.IX.2009, D. Avesani et al. leg. (MSNV); 2 ♀ 1 T, id., 7.X.2009, D. Avesani et al. leg. (MSNV); 1 ♂ 1 T, id., 21.X.2009, D. Avesani et al. leg. (MSNV); 3 ♂ 3 ♀ 1 T, id., 31.III.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 5 ♀, id., 14.IV.2010, D. Avesani et al. leg. (MSNV); 1 ♀, id., 28.IV.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 2 ♀, id., 14. V.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 4 ♀ 1 T, id., 27. V.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 5 ♀, id., 9. VI.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 3 ♀, id., 22. VI.2010, D. Avesani et al. leg. (MSNV); 3 ♀ 1 T, id., 7.VII.2010, D. Avesani et al. leg. (MSNV); 1 ♂ 2 ♀, id., 14.IV.2010, D. Avesani, A. Valentini & N. Verdari leg.; 8 ♂ 3 ♀ (C. ischnocheles, det. G. Lazzeroni), Negrar, Montecchio, 2. V.1968, G. Lazzeroni & G. Osella leg. (MSNV); 3 ♂ 2 ♀ (C. ischnocheles, det. G. Lazzeroni), id., 29.IX.1968, G. Osella leg. (MSNV); 1 ♀ (C. ischnocheles, det. G. Lazzeroni), Negrar, near Montecchio, 2. V.1968, G. Lazzeroni & G. Osella leg. (MSNV); 2 ♂ 2 ♀ (C. ischnocheles, det. G. Lazzeroni), Roverè Veronese, Vajo di Squaranto, 8. V.1968, G. Lazzeroni & A. Montolli leg. (MSNV); 1 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), id., 9. V.1968, G. Lazzeroni leg. (MSNV); 2 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), Roverè Veronese, Vajo di Squaranto near Cerro, 11.VII.1968, G. Lazzeroni leg. (MSNV); 12 ♂ 10 ♀ (C. ischnocheles, det. G. Lazzeroni), Roverè Veronese, Malga Campo Rotondo di Sotto near Monte Tomba, 19. VI.1968, G. Lazzeroni & A. Montolli leg. (MSNV); 1 ♂ (C. ischnocheles, det. G. Lazzeroni), Sant’Ambrogio di Valpolicella, Monte, 13. V.1968, G. Osella & A. Montolli leg. (MSNV); 2 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), San Martino Buon Albergo, Musella, 26.IV.1968, G. Lazzeroni leg. (MSNV); 1 ♂ (C. ischnocheles, det. G. Lazzeroni), San Zeno di Montagna, 21. V.1968, G. Osella & A. Montolli leg. (MSNV); 2 ♀ (C. ischnocheles, det. G. Lazzeroni), Selva di Progno, 8. V.1968, G. Lazzeroni leg. (MSNV); 4 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), Sommacampagna, Custoza, 23.IV.1968, G. Osella & A. Montolli leg. (MSNV); 2 ♂ 3 ♀ (C. ischnocheles, det. G. Lazzeroni), Torri del Benaco, Albisano, 4. VI.1968, G. Lazzeroni, R. Gioco & A. Montolli leg. (MSNV); 12 ♂ 7 ♀, Verona, Giardino Giusti, 29.IX.2005, F. Ballarin leg., meadow; 5 ♂ 1 ♀ (C. ischnocheles, det. G. Lazzeroni), Verona, Santa Maria in Stelle, 20. V.1966, Braga leg. (MSNV); 6 ♂ 7 ♀ (C. ischnocheles, det. G. Lazzeroni), Villa Bartolomea, 11.IX.1968, G. Lazzeroni & A. Montolli leg. (MSNV). Veneto: Vicenza Prov. — 1 ♂ 1 ♀, Cogollo del Cengio, Mosson, Costo, 21. VI.1992, F. Rigobello & B. Peruffo leg.; 1 ♀, id., 12.VII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂ 2 T, id., 23. VIII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♀, id., 11.X.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♀, id., 27.III.1993, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂, between Enego and Primolano, 500 m a.s.l., 8. VIII.1991, F. Gasparo leg., Ostrya carpinifolia wood; 1 ♂ 2 T, Pove del Grappa, Cornon, 21. VI.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♀ 1 T, id., 12.VII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂ 2 ♀ 1 T, id., 2. VIII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂ 1 ♀, id., 23. VIII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂ 1 ♀, id., 11.X.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂ 1 ♀ 2 T, id., 15.XI.1992, F. Rigobello & B. Peruffo leg. (MNAV); 1 ♂, Roana, tunnel of Fort Corbin, 25. V.1997, F. Stoch leg.; 1 ♀, Santorso, Via Riccio, 210 m a.s.l., 21.III.2017, D. Bianco leg., Populus hollow; 5 ♂ 1 ♀, id., 1.IV.2017, D. Bianco leg., Populus hollow; 1 ♂ 2 ♀, Schio, San Rocco, Contrà Gonnati, 540 m a.s.l., 14. VI.2013, D. Bianco leg., trunk of Castanea sativa; 3 ♂ 2 ♀ 1 T, Solagna, Mt. Grappa, Col Cavallino, 12.VII.1992, F. Rigobello & B. Peruffo leg. (MNAV); 2 ♂ 2 ♀ 1 T, id. 13.IX.1992, F. Rigobello & B. Peruffo leg.; 4 ♀, id., 11.X.1992, F. Rigobello & B. Peruffo leg (MNAV); 1 ♂ 3 ♀, Torrebelvicino, Valle dei Mercanti, 2.III.2009, D. Bianco leg., kaolin quarry; 2 ♂, Valstagna, Oliero, 150 m a.s.l., 31.VII.1989, F. Gasparo leg. (together with 2 ♀ of C. ischnocheles); 1 ♂, Zovencedo, San Gottardo, 13. VI.1996, R. Monguzzi leg. (RMM). Trentino: Trento Prov. — 11 ♂ 2 ♀ 1 T (C. ischnocheles, det. G. Lazzeroni), Ala, Sega di Ala, 20. VI.1968, G. Lazzeroni leg. (MSNV); 1 ♂, near Oltrecastello, 19.IX.2019, N. Massimo leg. (NMM); 2 ♂, Trento, Monte Celva, 700 m a.s.l., 14.IX.2019, N. Massimo leg. (NMM). Lombardy: Bergamo Prov. — 1 ♀, Lumezzane, Val Porcino, 2.IV.2011, M. Grottolo leg. Lombardy: Brescia Prov. — 1 ♂, Castenedolo, 11.XI.2011, M. Grottolo; 1 ♀, Cellattica, Campiani, 17.II.2011, M. Grottolo leg.; 1 ♂ 2 ♀, Paitone, Santuario, “Carso Bresciano”, 1.XI.1998, R. Monguzzi leg.; 2 ♂ 1 ♀, Zone, Grotta Spedini, 26.IV.2014, M. Grottolo leg. Lombardy: Cremona Prov. — 1 ♀, Soncino, 23.III.2019, N. Massimo leg. (NMM). Lombardy: Lecco Prov. — 1 ♂, near Valmadrera, 500 m a.s.l., 6.II.2011, S. Zoia leg. Lombardy: Mantova Prov. — 2 ♀ 1 T, Castiglione delle Stiviere, 107 m a.s.l., 29. VI.2009, G. Ruzzante leg. (together with 2 ♂ 5 ♀ 2 T of C. ischnocheles), basis of city walls. Lombardy: Milan Prov . — 7 ♂ 5 ♀ 2 T, Cassano d’Adda, near Groppello d’Adda, 140 m a.s.l., 6. VIII.2011, S. Zoia leg.; 1 ♂ 3 ♀, near Inzago, 130 m a.s.l., 2.X.2010, S. Zoia leg.; 2 ♂, Milano, Parco delle Cave, 26. V.2009, S. Zoia leg.; 2 ♀, id., 20.X.2009, S.Zoia leg.; 1 ♂ 3 ♀, Vanzago, Riserva di Vanzago, 4. VIII.1998, leg.?. Lombardy: Pavia Prov . — 1 ♂ 2 T, Rocca Susella, Stallara, 200 m a.s.l., 22.VII.1981, C. Torti leg., oak wood; 1 ♂ 1 ♀, Ruino, Torre degli Alberi, 500 m a.s.l., 11. VI.1985, C. Torti & S.Zoia leg.; 3 ♂ 2 ♀ 1 T, Zavattarello, 7. VI.1983, S. Zoia leg., oak wood. Lombardy: Sondrio Prov . — 6 ♂ 1 ♀, Cedrasco, 290 m a.s.l., 29. VI.1996, S. Zoia leg. Lombardy: Varese Prov. — 1 ♂, Brinzio, 600 m a.s.l., 30.III.1980, V. Rosa leg. Piedmont: Alessandria Prov. — 2 ♂ 2 ♀, Alessandria, Montecastello, 29.X.1978, C. Torti leg., Robinia pseudoacacia wood; 9 ♂ 14 ♀, Alessandria, Pecetto, 30.XI.1980, C. Torti leg., Robinia pseudoacacia wood; 2 ♂ 3 ♀, Alessandria, Valmadonna, 29.X.1978, C. Torti leg.; 7 ♂ 6 ♀, id., 11. VIII.1980, C. Torti leg., Robinia pseudoacacia wood; 3 ♂ 8 ♀, id., 20. VIII.1980, C. Torti leg., Robinia pseudoacacia wood; 1 ♀, id., 29. VIII.1980, C. Torti leg., moss; 1 ♂, id., 4.IX.1980, C. Torti leg., hollow in Salix; 1 ♀, id., 25.XI.1981, C. Torti leg.; 2 ♀, id., 2. V.1982, C. Torti leg., in haystack; 1 ♀, Bosio, near Capanne di Marcarolo, 700 m a.s.l., I.1981, C. Torti leg., chestnut wood; 1 ♂, Bosio, Capanne di Marcarolo, Case Foi, 760 m a.s.l., 28. V.2014, D. Cavo & L. Galli; 29 ♂ 40 ♀, Cabella Ligure, Pobbio, 1000 m a.s.l., 26. VIII.1981, C. Torti leg., oak wood; 1 ♂, Capriata d’Orba, 28.X.1980, C. Torti leg.; 1 ♀, Casasco, 15.III.1984, C. Torti & S. Zoia leg.; 3 ♂ 2 ♀, Gamalero, 22.X.1978, C. Torti leg.; 16 ♂ 12 ♀, Gavi, San Cristoforo, 6.X.1982, C. Torti leg.; 2 ♂ 1 ♀, Lerma, Cirimilla, 260 m a.s.l., M. Capurro, S. Ferretti, L. Galli & C. Torti leg., sieved under Carpinus betulus; 7 ♂ 7 ♀, id., 7.X.2010, M. Capurro & C. Torti leg., mixed wood; 1 ♂ 2 ♀, id., 240 m a.s.l., 6. VI.2013, G. Gardini & C. Torti leg., mixed wood; 1 ♀, Masio, Abbazia, 14. VI.1981, C. Torti leg.; 5 ♀, id., 15.I.1984, C. Torti leg.; 1 ♂ 2 ♀, Ovada, Monte Colma, 500 m a.s.l., 11.IX.1981, C. Torti leg., chestnut wood; 3 ♀ 1 T, Pratalborato, 18.X.1979, C. Torti leg., Robinia pseudoacacia wood; 4 ♂ 1 ♀, Serralunga di Crea, SW slope of Sacro Monte, 250 m a.s.l., 17. V.1998, G.B. Delmastro leg. (MCCI); 5 ♂ 11 ♀, Spineto Scrivia, 21.III.1981, C. Torti leg.; 2 ♀, id., 21.XI.1981, C. Torti leg.; 4 ♂ 6 ♀ 2 T, Val Grue, Valle San Innocenzo, 300 m a.s.l., 24.I.2008, M. Capurro & C. Torti leg., mixed wood with Quercus pubescens; 1 ♀, Valenza, Garzaia, 1.IX.1987, C. Torti leg.; 1 ♂, id., 16.IX.1987, C. Torti & S. Zoia leg. Piedmont: Asti Prov. — 12 ♂ 16 ♀, Castell’Alfero, Callianetto, 180 m a.s.l., 17.III.2019, G. Gardini leg., mixed wood; 3 ♂ 3 ♀, Ferrere, near Arduini, 260 m a.s.l., 31. V.1992, G.B. Delmastro leg.; 2 ♀, Grazzano Badoglio, 250 m a.s.l., 1.X.1982, C. Torti leg.; 1 ♂ 2 ♀, Moncucco Torinese, Cascina Morra, 335 m a.s.l., 3.II.1992, G.B. Delmastro leg.; 2 ♂ 3 ♀, Passerano-Marmorito, near Primeglio, 250 m a.s.l., 16.II.1992, G.B. Delmastro leg. (MCCI); 4 ♂ 11 ♀, Rocchetta Tanaro, 23.III.1984, C. Torti leg.; 1 ♂ 2 ♀, Rocchetta Tanaro, Val du Gé, 130 m a.s.l., 18.II.1992, G. B. Delmastro leg. Piedmont: Biella Prov. — 7 ♂ 4 ♀, Biella, near Santuario di Oropa, 1100 m a.s.l., 11.I.1981, C. Torti leg., Fagus sylvatica wood. Piedmont: Cuneo Prov . — 1 ♂, near Castagnito, 270 m a.s.l., 6.VII.1996, G.B. Delmastro leg.; 2 ♂ 2 ♀, Ceresole d’Alba, Cantarelli, Fontana Rambaudi, 300 m a.s.l., 4.VII.1997, G.B. Delmastro leg. (MCCI); 1 ♀, Fossano, near Salmour, 390 m a.s.l., 12.XII.1991, G.B. Delmastro leg.; 1 ♀, Frabosa Soprana, Grotta di Bossea 108 Pi / CN, 836 m a.s.l., 1. V.2013, E. Lana leg.; 1 ♂, Montaldo Roero, Valle Canemorto, 19.VII.1997, M. Evangelista leg. (MCCI); 1 ♂, Morozzo, Oasi di Crava-Morozzo, 23.IV.2008, L. Galli leg., plain forest; 1 ♂ 1 ♀, Racconigi, Tenuta Berroni, 252 m a.s.l., 17.III.1999, G.B. Delmastro leg. (MCCI); 1 ♂, Rossana, 600 m a.s.l., 14. VIII.1985, G. Gardini & R. Rizzerio leg. Piedmont: Turin Prov. — 2 ♂, Borgofranco d’Ivrea, Balma 4 di San Germano 1800 Pi /TO, 363 m a.s.l., 2.IV.2014, E. Lana leg.; 2 ♂ 2 ♀, Carmagnola, confluence of Torrente Meletta and Fiume Po, 236 m a.s.l., 2.VII.1997, G.B. Delmastro leg. (MCCI); 1 ♂, Carmagnola, Cave Germaire, 232 m a.s.l., 3.XI.2003, M. Evangelista leg.; 1 ♂ 2 ♀, Cumiana, Tavernette, Cascina Ussei, 440 m a.s.l., 3.III.1992, G.B. Delmastro leg.; 3 ♂, Pavone Canavese, Bric Appareglio, 255 m a.s.l., 23. VIII.1996, G.B. Delmastro leg.; 2 ♂ 2 ♀, Pecetto Torinese, Tetti Rosero, 415 m a.s.l., 4.I.1992, G.B. Delmastro leg.; 2 ♀, Viù, Niquidetto, Vallone Crivari, Rognoso, 1160 m a.s.l., 4. VIII.1992, G.B. Delmastro leg. Liguria: Genoa Prov. — 1 ♂, Arenzano, IX.1978, E. Gardini leg.; 6 ♂ 4 ♀, id., 22.II.1980, G. Gardini, C. Torti & S. Zoia leg.; 1 ♂ 1 T, Arenzano, Peschiera, 6.XI.1977, G. Gardini leg., Quercus ilex wood on limestone; 1 ♀, Arenzano, Val Lerone, 200 m a.s.l., 16. VIII.1977, G. Gardini leg.; 8 ♂ 8 ♀, Cogoleto, Prato Zanino, 3.XII.2000, P. Gastaldo leg.; 3 ♂, Cogoleto, Sciarborasca, 14. V.1974, G. Gardini leg., sieved under Quercus ilex; 2 ♂, Genova, Molassana, Prato Casarile, 28. VIII.1973, R. Poggi leg.; 1 ♂ 1 ♀, Genova, SW slope of Mt. Moro, 150 m a.s.l., 14.I.2007, G. Gardini leg., sieved under Arbutus unedo; 1 ♂, Genova, Sestri Ponente, Madonna del Gazzo, 400 m a.s.l., 20.XI.1981, G. Gardini & R. Rizzerio leg., Quercus ilex wood on dolomite rock; 1 ♂ 1 ♀ 1 T, Genova, Sestri Ponente, Monte Gazzo, 390 m a.s.l., 25.X.1982, S. Zoia leg.; 3 ♂ 3 ♀, id., 419 m a.s.l., 21.X.2010, M. Capurro leg., Quercus ilex wood, leaf litter; 2 ♂ 3 ♀, id., 410 m a.s.l., 23. XI.2010, M. Capurro & S. Ferretti leg., Quercus ilex wood, leaf litter; 8 ♂ 3 ♀, id., 350 m a.s.l., 2.XI.2011, M. Capurro, L. Galli & M. Zinni leg., Quercus ilex wood; 1 ♂, Isola del Cantone, Spinola, 5.XI.1978, G. Gardini leg.; 1 ♂ 2 ♀, Sant’Olcese, San Lorenzo di Casanova, 26.III.1972, G. Gardini leg.; 1 ♂ 1 ♀, Valbrevenna, NW slope of Mt. Buio, 1250 m a.s.l., 6.IX.2009, R. Poggi leg., mixed wood (MSNG). Liguria: La Spezia Prov . — 1 ♀, Levanto, Punta Mesco, 18.III.1975, G. Gardini leg., sieved in Quercus ilex wood. Liguria: Savona Prov . — 1 ♂ 5 ♀, Altare, Bric del Tesoro, 800 m a.s.l., 12.X.1989, G. Gardini & S. Zoia leg., beech wood; 2 ♀, Altare, NW slope of Mt. Baraccone, 500 m a.s.l., 24.X.1985, G. Gardini, S. Zoia & A. Rey leg.; 2 ♂ 4 ♀, Cairo Montenotte, Monte San Giorgio, 6.IV.1974, G. Bartoli leg.; 3 ♂ 1 ♀, Savona, Santuario di Savona, 17.X.1972, G. Bartoli leg.; 3 ♂ 1 ♀, id., 150 m a.s.l., 13.I.2019, P. Gardini & C. Giusto leg., mixed wood; 1 ♂, Varazze, Deserto di Varazze, 22. VIII.1979, G. Gardini leg. Emilia: Piacenza Prov. — 21 ♂ 26 ♀ 7 T 5 D, near Bobbio, 5.VII.1982, C. Torti & S. Zoia leg., oak wood; 4 ♂ 5 ♀, Bobbio, Dezza, 5.VII.1982, C. Torti & S. Zoia leg., beech wood; 6 ♂ 6 ♀ 2 T, Bobbio, Vaccarezza, 7. VI.1983, S.
First Evidence for the Decay B-s(0) -> mu(+) mu(-)
No full textA search for the rare decays Bs0→μ+μ- and B0→μ+μ- is performed with data collected in 2011 and 2012 with the LHCb experiment at the Large Hadron Collider. The data samples comprise 1.1 fb-1 of proton-proton collisions at √s=8 TeV and 1.0 fb-1 at √s=7 TeV. We observe an excess of Bs0→μ+μ- candidates with respect to the background expectation. The probability that the background could produce such an excess or larger is 5.3×10-4 corresponding to a signal significance of 3.5 standard deviations. A maximum-likelihood fit gives a branching fraction of B(Bs0→μ+μ-)=(3.2-1.2+1.5)×10-9, where the statistical uncertainty is 95% of the total uncertainty. This result is in agreement with the standard model expectation. The observed number of B0→μ+μ- candidates is consistent with the background expectation, giving an upper limit of B(B0→μ+μ-)<9.4×10-10 at 95% confidence level
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
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
Measurement of the B0–B0 oscillation frequency Δmd with the decays B0→D−π+ and B0→ J/ψK∗0
No full textThe B
0
–B
0
oscillation frequency Δmd is measured by the LHCb experiment using a dataset corresponding
to an integrated luminosity of 1.0 fb−1
of proton–proton collisions at √
s = 7 TeV, and is found to be
Δmd
=0.5156±0.0051 (stat.)±0.0033 (syst.) ps−1
. The measurement is based on results from analyses
of the decays B
0
→ D
−π
+ (D
−
→ K
+π
−π
−) and B
0
→ J/ψK
∗0
(J/ψ →μ
+μ
−,K
∗0
→ K
+π
−) and
their charge conjugated modes
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
Measurement of the polarization amplitudes and triple product asymmetries in the B0s → Φ Φ decay
No full text<p>Using 1.0 fb−1 of pp collision data collected at a centre-of-mass energy of s√=7 TeV with the LHCb detector, measurements of the polarization amplitudes, strong phase difference and triple product asymmetries in the B0s→ϕϕ decay mode are presented. The measured values are</p>
<p>|A0|2=0.365±0.022(stat)±0.012(syst),|A⊥|2=0.291±0.024(stat)±0.010(syst),cos(δ∥)=−0.844±0.068(stat)±0.029(syst),AU=−0.055±0.036(stat)±0.018(syst),AV=0.010±0.036(stat)±0.018(syst).</p>
- …
