14,943 research outputs found
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
First observations of B̅[0 over s]→D[superscript +]D[superscript -], D[+ over s]D[superscript -] and D[superscript 0]D̅[superscript 0] decays
No full textFirst observations and measurements of the branching fractions of the B̅[0 over s]→D[superscript +]D[superscript -], B̅[0 over s]→D[+ over s]D[superscript -] and B̅[0 over s]→D[superscript 0]D̅[superscript 0] decays are presented using 1.0 fb[superscript -1] of data collected by the LHCb experiment. These branching fractions are normalized to those of B̅[superscript 0]→D[superscript +]D[superscript -], B[superscript 0]→D[superscript -]D[+ over s] and B[superscript -]→D[superscript 0]D[- over s], respectively. An excess of events consistent with the decay B̅[superscript 0]→D[superscript 0]D̅[superscript 0] is also seen, and its branching fraction is measured relative to that of B[superscript -]→D[superscript 0]D[- over s]. Improved measurements of the branching fractions B(B̅[0 over s]→D[+ over s]D[- over s]) and B(B[superscript -]→D[superscript 0]D[- over s]) are reported, each relative to B(B[superscript 0]→D[superscript -]D[+ over s]). The ratios of branching fractions are B(B̅[0 over s]→D[superscript +]D[superscript -])/B(B̅[superscript 0]→D[superscript +]D[superscript -])=1.08±0.20±0.10, B(B̅[0 over s]→D[+ over s]D[superscript -])/B(B[superscript 0]→D[superscript -]D[+ over s])=0.050±0.008±0.004, B(B̅[0 over s]→D[superscript 0]D̅[superscript 0])/B(B[superscript -]→D[superscript 0]D[- over s])=0.019±0.003±0.003, B(B̅[superscript 0]→D[superscript 0]D̅[superscript 0])/B(B[superscript -]→D[superscript 0]D[- over s])<0.0024 at 90% CL, B(B̅[0 over s]→D[+ over s]D[- over s])/B(B[superscript 0]→D[superscript -]D[+ over s])=0.56±0.03±0.04, B(B[superscript -]→D[superscript 0]D[- over s])/B(B[superscript 0]→D[superscript -]D[+ over s])=1.22±0.02±0.07, where the uncertainties are statistical and systematic, respectively.National Science Foundation (U.S.
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
Subjective mood is influenced by sleep-related and circadian processes in a forced desynchrony protocol with severe sleep restriction
No full textG. Heath, C. Sargent, D. Darwent, S. A. Ferguson, D. J. Kennaway, L. K. Hampton, R. W. Matthews and G. D. Roachhttp://www.australasianchronobiology.org/ACS2010abstract.html#
Search for CP violation in D + → ϕπ + and D+s→K0Sπ+ decays
No full textA search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61 ± 0.83 ± 0.14)%
The fig: botany, production and uses Botany, production and uses./ Ali Sarkhosh, Alimohammad Yavari, Louise Ferguson.
No full textIncludes bibliographical references and index"This book provides a comprehensive review of fig growing from a scientific and horticultural perspective, covering botany, production, processing, health, and industrial uses"--History, Archaeology and Culture / F. Spagnoli and A. Yavari -- Taxonomy, Botany and Physiology / B. Gaaliche and D. Narzary -- Production and Growing Regions / G. Ferrara, A. Mazzeo, P. Colasuonno and I. Marcotuli -- Biodiversity, Germplasm Resources and Breeding Methods / H. Ikegami, J.I. Hormaza, F.C. Balas, M.J. Serradilla and M. López- Corrales -- Fig World Cultivars / F. Aljane, M.H. Neily, M.G.F. Rodrigues, C. Mazri, V. Stournaras, T. Kokaj, A.Yavari, L. Ferguson and A. Sarkhosh -- Propagation Techniques and Nursery Management / H.Yakushiji, E. Ertan, B. Ertan and G. Günver Dalkılıç -- Environmental Requirements and Site Selection / Polat, A. and Sarkhosh, A. -- Orchard Establishment and Tree Management / M. Jafari, M. López-Corrales, A. Hosomi, H. Nogata, H. Ikegami, A.J. Galán, A.I. Galán, F. Balas, M.J. Serradilla, C.A. Garza Alonso, A. Yavari, L. Ferguson and A. Sarkhosh -- Fig Wasps and Pollination / F. Kjellberg, S. van Noort, and J. Rasplus -- Soil and Nutritional Requirements / P. Gordon, L. Ferguson and P. Brown -- Irrigation and Water Requirements / M. Abdolahipour, A.A. Kamgar-Haghighi, A.R. Sepaskhah, N. Davatgar and N. Dalir -- Fungal, Bacterial, and Nematodes Problems in Figs / R. Mostowfizadeh-Ghalamfarsa, Z. Bolboli, F. Salmaninezhad and T. J. Michailides -- Fig Viruses, Viroids and Phytoplasmas / I. Tzanetakis and S. Sabanadzovic -- Arthropod Pests of Fig and Their Management / S. Singh, Z. Li, Y. Zhang, M.J. Grieshop, J. Giliomee, G.E. Massimino Cocuzza and R.Kaur Sandhu -- Fruit Maturity, Harvest Methods and Technologies / M. Jafari, A. Yavari, M. Crivelli, C.H. Crisosto A. Sarkhosh -- Postharvest Physiology and Physiological Disorders of Fresh Fig Fruits / A. Ramezanian, A. Amiri, C.H. Crisosto -- Processing and Industrialization / M. Maghoumi, M.L. Amodio and G. Colelli -- Fig and Health / S. Mahmoudi and and A. Chawla -- World Fig Market / Z. Shokoohi, M.H. Tarazkar and A. Polat1 online resource (xiv, 493 pages)
Birthday Party for Mrs R V Ferguson
No full textLarge group of people atteding a birtday party honoring Mrs R V Ferguson, given by John Sleeper at the Boating and Fishing Club in Waco on December 15, 1938. They are dressed formally, some are seated in chairs in front row and some are standing in back. Those attending: Mrs Allen D Sanford, Mr John Sleeper, Mrs R V Ferguson, Mr Allen D Sanford, Miss Minnie Killough, Judge P S Hale, Mrs R L Baldridge, Mr H J Cureton, Mrs A J Hall, Mr Tom M Sleeper, Mrs Jennie Crow, Judge W M Sleeper, Mrs P S Hale, Mr R L Baldridge, Mrs W M Sleeper, Mr R V Ferguson, Mrs John Sleeper, Dr A J Hall, Mrs Ida E Lumpkin, Mr R M Killough, Mrs Tom M Sleeper, Mr Frank Woodruff, Miss Mary Pearl Hale, Mrs Hattie Bush, Mrs Craig Logan, Miss Marjorie Hale, Mr Craig Logan, Mrs H J Cureton, Miss Susie Sleepe
Search for CP violation in D ± → K S 0 K ± and D s ± → K S 0 π ± decays
No full textA search for CP violation in Cabibbo-suppressed D ± → K S 0 K ± and D s ± → K S 0 π ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb, recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be
AD±CP→K0SK±=(+0.03±0.17±0.14)%AD±sCP→K0Sπ±=(+0.38±0.46±0.17)%,
assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D (s) ± → K S 0 K ± and D (s) ± → K S 0 π ± gives the sum
AD±→K0SK±CP+AD±s→K0Sπ±CP=(+0.41±0.49±0.26)%.
In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation
Search for D+(s) to pi+ mu+ mu- and D+(s) to pi- mu+ mu+ decays
No full textA search for non-resonant D+(s) to pi+mu+mu- and D+(s) to pi-mu+mu+ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1.0 fb-1, at sqrt(s) = 7 TeV recorded by the LHCb experiment in 2011. No signals are observed and the 90% (95%) confidence level (CL) limits on the branching fractions are B(D+ to pi+mu+mu-) < 7.3 (8.3) x 10-8, B(Ds+ to pi+mu+mu-) < 4.1 (4.8) x 10-7, B(D+ to pi-mu+mu+) < 2.2 (2.5) x 10-8, B(Ds+ to pi-mu+mu+) < 1.2 (1.4) x 10-7. These limits are the most stringent to date
Search for the decay Bs0→D*∓π±
No full textA search for the decay Bs0→D*∓π± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as Bs0→π+π- and Bs0→DD̅ . Systematic uncertainties are minimized by using B0→D*∓π± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(Bs0→D*∓π±)<6.1(7.8)×10-6 at 90% (95%) confidence level
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