Search results for "Lambda"
showing 10 items of 632 documents
"Table 3" of "J/psi polarization in pp collisions at sqrt(s)=7 TeV"
2016
$\lambda_\theta$ as a function of $p_{\rm T}$ for inclusive J/$\psi$, measured in the Collins-Soper reference frame.
"Table 1" of "J/psi polarization in pp collisions at sqrt(s)=7 TeV"
2016
$\lambda_\theta$ as a function of $p_{\rm T}$ for inclusive J/$\psi$, measured in the helicity reference frame.
"Table 8" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
$\Upsilon(1{\rm S})$ polarization parameters in the helicity and Collins-Soper reference frames measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV in the rapidity interval $2.5
"Table 2" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
J/$\psi$ polarization parameters, measured for Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV, in the helicity and Collins-Soper reference frames in the rapidity interval $2.5
"Table 7" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
$\Upsilon(1{\rm S})$ polarization parameters in the helicity and Collins-Soper reference frames measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV in the rapidity interval $2.5
"Table 1" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
J/$\psi$ polarization parameters, measured for Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV, in the helicity and Collins-Soper reference frames in the rapidity interval $2.5
"Table 12" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
$\Upsilon(1{\rm S})$ polarization parameters in the helicity and Collins-Soper reference frames measured in Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV in the rapidity interval $2.5
"Table 6" of "First measurement of quarkonium polarization in nuclear collisions at the LHC"
2021
J/$\psi$ polarization parameters, measured for Pb--Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV, in the helicity and Collins-Soper reference frames in the rapidity interval $2.5
Experimental investigations of the hypernucleus $_Λ^4$H
2015
International audience; Negatively charged pions from two-body decays of stopped _Lambda^4H hypernuclei were studied in 2012 at the Mainz Microtron MAMI, Germany. The momenta of the decay-pions were measured with unprecedented precision by using high-resolution magnetic spectrometers. A challenge of the experiment was the tagging of kaons from associated K^+∧ production off a Be target at very forward angles. In the year 2014, this experiment was continued with a better control of the systematic uncertainties, with better suppression of coincident and random background, improved particle identification, and with higher luminosities. Another key point of the progress was the improvemen…
New constraints on R-parity violation from μ–e conversion in nuclei
1998
We derive new constraints on the products of explicitly R-parity violating couplings $\lambda$ and $\lambda'$ in MSSM from searches for \mu-e conversion in nuclei. We concentrate on the loop induced photonic coherent conversion mode. For the combinations $|\lambda\lambda|$ which in \mu-e conversion can be probed only at loop level our constraints are in many cases more stringent than the previous ones due to the enhancement of the process by large $\ln(m^2_f/m^2_{\tilde f}).$ For the combinations of $|\lambda'\lambda'|$ the tree-level \mu-e conversion constraints are usually more restrictive than the loop ones except for two cases which involve the third generation. With the expected improv…