46,270 research outputs found
Search for violation in decays and observation of the Cabibbo-suppressed decay
No full textWe search for violation by measuring a -odd asymmetry in the
Cabibbo-suppressed decay, and
in the Cabibbo-favored and
decays. We use 980 of data collected by the Belle detector running at the KEKB
asymmetric-energy collider. The -violating -odd parameter
is measured to be
and
where the first
uncertainty is statistical and the second is systematic. We also report the
first observation of the Cabibbo-suppressed decay . The branching fraction is measured relative to
that of the analogous Cabibbo-favored decay :
FIGURE 2 in Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species
No full textFIGURE 2: Humerobates (Humerobates) kumasoi n. sp., scanning electron micrographs (photos by Nakamura Y.-N. and Shirosaki T.). Adult female: A – Dorsal view; B – Rostral region, in: interlamellar seta, le: lamellar seta, ro: rostral seta, Tu: tutorium; C – Left bothridial region; D – Left leg I: solenidion of genu broken.Published as part of Nakamura, K., Nakamura, Y.-N. & Fujikawa, T., 2014, Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species, pp. 249-269 in Acarologia 54 (3) on page 252, DOI: 10.1051/acarologia/20142131, http://zenodo.org/record/539286
Study of the lineshape of using decays to
No full textWe present a study of the lineshape in the decay using a data sample of
pairs collected at the resonance with the Belle
detector at the KEKB asymmetric-energy collider. The peak near the
threshold in the invariant mass spectrum is fitted
using a relativistic Breit-Wigner lineshape. We determine the mass and width
parameters to be and , respectively. The branching fraction is found to be
. The signal from decays is observed for the first
time with significance, and the ratio of branching fractions
between charged and neutral decays is measured to be . The peak is also studied using a Flatt\'{e}
lineshape. We determine the lower limit on the coupling
constant to be at 95% credibility in the parameter region where the
ratio of to the mass difference from the threshold
is equal to , as measured by LHCb.Comment: submitted to Phys. Rev
Thermoregulation in mice: The road to understanding torpor hypothermia and the shortcomings of a circuit for generating fever
No full textN
Amplitude analysis of D-0 -> K- pi(+) pi(+) pi(-)
No full textKolcu, Onur Buğra (Arel Author)Kolcu, Onur Buğra (Arel Author)We present an amplitude analysis of the decay D-0 -> K- pi(+)pi(+)pi(-) based on a data sample of 2.93 fb(-1) acquired by the BESIII detector at the psi(3770) resonance. With a nearly background free sample of about 16000 events, we investigate the substructure of the decay and determine the relative fractions and the phases among the different intermediate processes. Our amplitude model includes the two-body decays D-0 -> (K) over bar*(0)rho(0), D-0 -> K- a(1)(+) (1260) and D-0 -> K-1(-)(1270)pi(+), the three-body decays D-0 -> K-1(-)*(0)pi(+)pi(-) and D-0 -> K- pi(+)rho(0), as well as the four-body nonresonant decay D-0 -> K- pi(+)pi(+)pi(-). The dominant intermediate process is D-0 -> K(-)a(1)(+)(1260)accounting for a fit fraction of 54.6%.We present an amplitude analysis of the decay D-0 -> K- pi(+)pi(+)pi(-) based on a data sample of 2.93 fb(-1) acquired by the BESIII detector at the psi(3770) resonance. With a nearly background free sample of about 16000 events, we investigate the substructure of the decay and determine the relative fractions and the phases among the different intermediate processes. Our amplitude model includes the two-body decays D-0 -> (K) over bar*(0)rho(0), D-0 -> K- a(1)(+) (1260) and D-0 -> K-1(-)(1270)pi(+), the three-body decays D-0 -> K-1(-)*(0)pi(+)pi(-) and D-0 -> K- pi(+)rho(0), as well as the four-body nonresonant decay D-0 -> K- pi(+)pi(+)pi(-). The dominant intermediate process is D-0 -> K(-)a(1)(+)(1260)accounting for a fit fraction of 54.6%
Measurement of CP asymmetry in D-0 -> K- K+ and D-0 -> pi(-) pi(+) decays
No full textTime-integrated CP asymmetries in D 0 decays to the final states K - K + and π - π + are measured using proton-proton collisions corresponding to 3fb-1 of integrated luminosity collected at centre-of-mass energies of 7 TeV and 8 TeV. The D 0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial flavour of the charm meson. The difference in CP asymmetries between the two final states is measured to be Δ ACP = ACP (K- K +) ACP (π- π+) = (+ 0.14 ± 0.16 (stat) ± 0.08 (syst)) %. A measurement of A CP (K - K +) is obtained assuming negligible CP violation in charm mixing and in Cabibbo-favoured D decays. It is found to be ACP (K- K+) = (- 0.06 ± 0.15 (stat) ± 0.10 (syst)) %, where the correlation coefficient between ΔA CP and A CP (K - K +) is ρ = 0.28. By combining these results, the CP asymmetry in the D 0 → π - π + channel is A CP (π - π +) = (-0.20 ± 0.19 (stat) ± 0.10 (syst))%. [Figure not available: see fulltext.] © 2014 The Author(s)
FIGURE 8 in Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species
No full textFIGURE 8: Spatiodamaeus sp. (NSMT-Ac 13786): A – Left pedipalp; B – Right seta c1; C – Right tarsus I; D – Claw and distal setae of left leg I; E – Claw and distal setae of left leg IV; F – Left chelicera.Published as part of Nakamura, K., Nakamura, Y.-N. & Fujikawa, T., 2014, Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species, pp. 249-269 in Acarologia 54 (3) on page 260, DOI: 10.1051/acarologia/20142131, http://zenodo.org/record/539286
FIGURE 8 in Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species
No full textFIGURE 8: Spatiodamaeus sp. (NSMT-Ac 13786): A – Left pedipalp; B – Right seta c1; C – Right tarsus I; D – Claw and distal setae of left leg I; E – Claw and distal setae of left leg IV; F – Left chelicera.Published as part of Nakamura, K., Nakamura, Y.-N. & Fujikawa, T., 2014, Oribatid Fauna (Acari, Oribatida) From A Cave In South Nippon (Japan), With A Description Of A New Species, pp. 249-269 in Acarologia 54 (3) on page 260, DOI: 10.1051/acarologia/20142131, http://zenodo.org/record/539286
First observation of Λb0 → ςc (∗)++ D (∗)-K- decays
No full textThe four decays, Λb0→ςc(∗)++D(∗)-K-, are observed for the first time using proton-proton collision data collected with the LHCb detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 6 fb-1. By considering the Λb0→Λc+D¯0K- decay as reference channel, the following branching fraction ratios are measured to be B(Λb0→ςc++D-K-)B(Λb0→Λc+D¯0K-)=0.282±0.016±0.016±0.005, B(Λb0→ςc∗++D-K-)B(Λb0→ςc++D-K-)=0.460±0.052±0.028, B(Λb0→ςc++D∗-K-)B(Λb0→ςc++D-K-)=2.261±0.202±0.129±0.046, B(Λb0→ςc∗++D∗-K-)B(Λb0→ςc++D-K-)=0.896±0.137±0.066±0.018, where the first uncertainties are statistical, the second are systematic, and the third are due to uncertainties in the branching fractions of intermediate particle decays. These initial observations mark the beginning of pentaquark searches in these modes, with more datasets to become available following the LHCb upgrade. © 2024 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3
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