Search results for "MBD"
showing 10 items of 646 documents
Complete Measurement of the Λ Electromagnetic Form Factors.
2019
The exclusive process e+e−→ΛΛ¯, with Λ→pπ− and Λ¯→p¯π+, has been studied at s=2.396 GeV for measurement of the timelike Λ electric and magnetic form factors, GE and GM. A data sample, corresponding to an integrated luminosity of 66.9 pb−1, was collected with the BESIII detector for this purpose. A multidimensional analysis with a complete decomposition of the spin structure of the reaction enables a determination of the modulus of the ratio R=|GE/GM| and, for the first time for any baryon, the relative phase ΔΦ=ΦE−ΦM. The resulting values are R=0.96±0.14(stat)±0.02(syst) and ΔΦ=37°±12°(stat)±6°(syst), respectively. These are obtained using the recently established and most precise value of …
CCDC 1443023: Experimental Crystal Structure Determination
2016
Related Article: Pierre-Emmanuel Doulain, Christine Goze, Ewen Bodio, Philippe Richard, Richard A. Decréau|2016|Chem.Commun.|52|4474|doi:10.1039/C5CC10526A
CCDC 2034819: Experimental Crystal Structure Determination
2021
Related Article: Peng Shi, Yongliang Tu, Duo Zhang, Chenyang Wang, Khai‐Nghi Truong, Kari Rissanen, Carsten Bolm|2021|Adv.Synth.Catal.|363|2552|doi:10.1002/adsc.202100162
"Table 35" of "K*(892)^0 and PHI(1020) production in Pb-Pb collisions at sqrt(sNN) = 2.76 TeV"
2015
Enhancement ratio of Lambda for different centrality intervals in Pb-Pb collisions at sqrt(sNN)=2.76 TeV. The enhancement ratio is the ratio of the yield of a particle in A-A collisions to the yield of the particle in pp collisions, scaled by the average number of participant nucleons: Enhancement=[Yield(A-A)/]/[Yield(pp)/2]. The Lambda yield for pp collisions at sqrt(s)=2.76 TeV is extrapolated from the measured yield at sqrt(s)=7 TeV. In the tables, the first systematic uncertainty is the uncertainty from the Pb-Pb data and the second is from the uncertainty in . In the paper this ratio is plotted as a function of the values taken from PRC 88, 044909 (2013).
"Table 4" of "Suppression of $\Lambda(1520)$ resonance production in central Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV"
2018
$\langle p_{\rm T} \rangle$ of $\Lambda$(1520) (sum of particle and anti-particle states) at midrapidity as a function of $\langle {\rm d}N_{\rm ch}/{\rm d}\eta \rangle^{1/3}$. The uncertainty 'syst,uncorrelated' indicates the systematic uncertainty after removing the contributions common to all centrality classes
"Table 3" of "Measurement of the transverse polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons produced in proton-proton collisions at $\sqrt{s}=…
2015
Transverse polarization POL of LAMBDA and LAMBDABAR hyperons as a function of PT.
"Table 2" of "Measurement of the transverse polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons produced in proton-proton collisions at $\sqrt{s}=…
2015
Transverse polarization POL of LAMBDA and LAMBDABAR hyperons as a function of XF.
HEAT FLUX IN SUPERFLUID TRANSITION AND IN TURBULENT HELIUM COUNTERFLOW
Photoproduction of the hypertriton
1997
In the framework of the impulse approximation we study the photoproduction of the hypertriton $^3_{\Lambda}$H by using realistic $^3$He wave functions obtained as solutions of Faddeev equations with the Reid soft-core potential for different $^3_{\Lambda}$H wave functions. We obtain relatively small cross sections of the order of 1 nb. We also find that the influence of Fermi motion is important, while the effect of different off-shell assumptions on the cross section is not too significant.
Precision Measurement of the Mass and Lifetime of the Ξ[0 over b] Baryon
2014
Using a proton-proton collision data sample corresponding to an integrated luminosity of 3 fb$^{-1}$ collected by LHCb at center-of-mass energies of 7 and 8 TeV, about 3800 $\Xi_b^0\to\Xi_c^+\pi^-$, $\Xi_c^+\to pK^-\pi^+$ signal decays are reconstructed. From this sample, the first measurement of the $\Xi_b^0$ baryon lifetime is made, relative to that of the $\Lambda_b^0$ baryon. The mass differences $M(\Xi_b^0)-M(\Lambda_b^0)$ and $M(\Xi_c^+)-M(\Lambda_c^+)$ are also measured with precision more than four times better than the current world averages. The resulting values are $\frac{\tau_{\Xi_b^0}}{\tau_{\Lambda_b^0}} = 1.006\pm0.018\pm0.010$, $M(\Xi_b^0) - M(\Lambda_b^0) = 172.44\pm0.39\pm…