590 research outputs found
3ΛH and 3Λ¯H‾ production in Pb–Pb collisions at √sNN = 2.76 TeV
No full textThe production of the hypertriton nuclei 3
H and 3
¯ H has been measured for the first time in Pb–Pb
collisions at √sNN = 2.76 TeV with the ALICE experiment at LHC. The pT-integrated 3
H yield in one
unity of rapidity, dN/dy × B.R.
3
H→3He,π− = (3.86 ± 0.77(stat.) ± 0.68(syst.)) × 10−5 in the 0–10% most
central collisions, is consistent with the predictions from a statistical thermal model using the same
temperature as for the light hadrons. The coalescence parameter B3 shows a dependence on the
transverse momentum, similar to the B2 of deuterons and the B3 of 3He nuclei. The ratio of yields
S3 = 3
H/(3He×/p) was measured to be S3 = 0.60±0.13(stat.)±0.21(syst.) in 0–10% centrality events;
this value is compared to different theoretical models. The measured S3 is compatible with thermal
model predictions. The measured 3
H lifetime, τ = 181+54
−39(stat.) ± 33(syst.) ps is in agreement within 1σ
with the world average value.peerReviewe
Study of Muon Pairs and Vector Mesons Produced in High Energy Pb-Pb Interactions
No full text%NA50 %title\\ \\The experiment studies dimuons produced in Pb-Pb and p-A collisions, at nucleon-nucleon c.m. energies of = 18 and 30 GeV respectively. The setup accepts dimuons in a kinematical range roughly defined as , and stands maximal luminosity (5~10~Pb ions and 10 interactions per burst). The physics includes signals which probe QGP (Quark-Gluon Plasma), namely the , J/ and vector mesons and thermal dimuons, and reference signals, namely the (unseparated) and mesons, and Drell-Yan dimuons. The experiment is a continuation, with improved means, of NA38, and expands its study of {\it charmonium suppression} and {\it strangeness enhancement}.\\ \\The muons are measured in the former NA10 spectrometer, which is shielded from the hot target region by a beam stopper and absorber wall. The muons traverse 5~m of BeO and C. The impact parameter is determined by a Zero Degree Calorimeter (Ta with silica fibres). Energy dissipation and particle production are measured by an Electromagnetic Calorimeter (Pb and scintillating fibres) and a Multiplicity Detector (Si strips).\\ \\\\ \\ \\ \
Physics of Atomic Nuclei V. 68, I. 07
No full textPhysics of Atomic Nuclei -- July 2005
Volume 68, Issue 7, pp. 1079-1262
NUCLEI
Experiment
Alpha-Cluster States in 18O
V. Z. Goldberg, K.-M. Källman, T. Lönnroth, P. Manngård, and B. B. Skorodumov
pp. 1079-1086 Full Text: PDF (292 kB)
Jpi = 0– Levels in 156Gd and 158Gd
E. P. Grigoriev
pp. 1087-1095 Full Text: PDF (216 kB)
Cold-Neutron Storage Owing to Diffusion Reflection
S. S. Arzumanov, L. N. Bondarenko, P. Geltenbort, V. I. Morozov, and Yu. N. Panin
pp. 1096-1100 Full Text: PDF (215 kB)
Analysis of the Phase Tunneling Time for Cold Neutrons through a Neutron Interference Filter
A. K. Zaichenko and V. S. Olkhovsky
pp. 1101-1103 Full Text: PDF (106 kB)
Dynamic Reflection and Refraction of Neutrons at the Boundaries of Matter Characterized by a Variable Magnetic Induction
A. V. Kozlov and A. I. Frank
pp. 1104-1119 Full Text: PDF (311 kB)
Theory
Puzzle of the 6Li Quadrupole Moment: Steps toward Solving It
L. D. Blokhintsev, V. I. Kukulin, and V. N. Pomerantsev
pp. 1120-1132 Full Text: PDF (295 kB)
Magic Numbers of Ultraheavy Nuclei
V. Yu. Denisov
pp. 1133-1137 Full Text: PDF (230 kB)
Effect of Synchrotron Radiation on Nuclear Beta Decay
I. V. Kopytin and K. N. Karelin
pp. 1138-1146 Full Text: PDF (242 kB)
Nature of Coulomb Shifts of Nuclear Scattering Resonances
N. Zh. Takibayev
pp. 1147-1152 Full Text: PDF (152 kB)
The Examination of the 12C + 24Mg Elastic Scattering around the Coulomb Barrier
I. Boztosun, Y. Dagdemir, and O. Bayrak
pp. 1153-1159 Full Text: PDF (227 kB)
ELEMENTARY PARTICLES AND FIELDS
Experiment
A Study of the Nuclear-Medium Influence on Transverse Momentum of Hadrons Produced in Deep-Inelastic Neutrino Scattering
N. M. Agababyan, V. V. Ammosov, M. Atayan, N. Grigoryan, H. Gulkanyan, A. A. Ivanilov, Zh. Karamyan, and V. A. Korotkov
pp. 1160-1170 Full Text: PDF (303 kB)
Backscattered Flux Generated by Protons with Energy above 1 TeV in a Lead Absorber
D. M. Podorozhnyi, I. D. Rapoport, and A. N. Turundaevsky
pp. 1171-1175 Full Text: PDF (141 kB)
Albedo in the ATIC Experiment: Measurements and Simulations
N. V. Sokolskaya, J. H. Adams, Jr., H. S. Ahn, K. E. Batkov, G. L. Bashindzhagyan, J. Z. Wang, J. P. Wefel, J. Wu, O. Ganel, T. G. Guzik, R. M. Gunasingha, V. I. Zatsepin, J. Isbert, K. C. Kim, M. Christl, E. N. Kouznetsov, M. I. Panasyuk, A. D. Panov, E. S. Seo, A. R. Fazely, J. Chang, and W. K. H. Schmidt
pp. 1176-1182 Full Text: PDF (199 kB)
Theory
Some Features of the Production of Heavy-Quark-Containing Baryons in Electron-Positron Collisions
S. P. Baranov and V. L. Slad
pp. 1183-1189 Full Text: PDF (237 kB)
Is It Still Interesting to Search for Lepton-Flavor Violation in Rare Kaon Decays?
L. G. Landsberg
pp. 1190-1210 Full Text: PDF (388 kB)
Pion Electromagnetic Form Factor in QCD Sum Rules
V. V. Braguta and A. I. Onishchenko
pp. 1211-1217 Full Text: PDF (167 kB)
On the Stability of a Self-Similar Spherical Bubble of a Scalar Higgs Field in de Sitter Space
N. A. Voronov, A. L. Dyshko, and N. B. Konyukhova
pp. 1218-1226 Full Text: PDF (226 kB)
Quasilinearization Method: Nonperturbative Approach to Physical Problems
V. B. Mandelzweig
pp. 1227-1258 Full Text: PDF (505 kB)
LETTERS TO THE EDITOR
Quadrupole Moments and Transition Probabilities B(E2) for Light Nuclei in the Orthogonal-Scheme Basis with Symmetric Representations of the O(A – 1) Group
K. J. Yankauskas and A. K. Petrauskas
pp. 1259-1260 Full Text: PDF (92 kB)
FUTURE PUBLICATIONS
Future Publications
pp. 1261-1262 Full Text: PDF (74 kB)Archived web conten
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