126084521
Measurements of the widths of charmonium states at the Fermilab anti-p accumulator ring
125360362
A program to measure the direct CP violating decay K(L) --> pi0 nu anti-nu and other rare decays at Fermilab using the main injector
116924174
Search for new strange resonances in inclusive charged kaon spectra from p̄p annihilation at rest
Charged spectra from pp annihilations at rest have been measured using the PS183 spectrometer at LEAR. From these data, charged kaon spectra are produced using time‐of‐flight separation. The spectra show structures corresponding to annihilation into the K±K−+ and K*±K−+ channels. A search for structures indicating other resonances is discussed.
117012082
Search for narrow structures in the inclusive gamma ray spectrum resulting from proton-antiproton annihilation at rest
118620496
Observation of narrow lines in the spectra of charged mesons produced in antiproton-proton annihilation at rest
38259728
Search for narrow states in the inclusive gamma -ray spectra resulting from antiproton annihilations at rest in liquid hydrogen and deuterium.
The energy spectrum of {gamma} rays produced in proton-antiproton annihilation at rest in hydrogen and deuterium has been measured with good energy resolution and high statistics. The data were taken using the PS183 magnetic pair spectrometer at CERN's Low Energy Antiproton Ring. A detailed search of the {gamma} spectrum yielded no evidence of {gamma} transitions to narrow states with widths consistent with the spectrometer resolution. In hydrogen, upper limits (95% C.L.) are obtained for the yield of narrow states of (2--5){times}10{sup {minus}4} for states below 1700 MeV/{ital c}{sup 2}, and (5--10){times}10{sup {minus}4} for states between 1700 and 1800 MeV/{ital c}{sup 2}. In deuterium, the corresponding upper limits are (1--7){times}10{sup {minus}3} for masses between 700 and 1730 MeV/{ital c}{sup 2}, and (1--2){times}10{sup {minus}3} for masses between 1750 and 1835 MeV/{ital c}{sup 2}. These results contradict reports of the observation of narrow lines made by previous experiments.
119152850
Wakes in a collisional quark-gluon plasma
Wakes created by a parton moving through a static and infinitely extended quark?gluon plasma are considered. In contrast to former investigations, collisions within the quark?gluon plasma are taken into account using a transport theoretical approach (Boltzmann equation) with a Bhatnagar?Gross?Krook collision term. Within this model, it is shown that the wake structure changes significantly compared to the collisionless case.
11476051
Observing Correlated Production of Defects and Antidefects in Liquid Crystals
We present observations of strength one defects and antidefects formed in isotropic-nematic phase transition in a thin layer of nematic liquid crystals, using a cross-polarizer setup. We measure the widths of the distributions of {\it net} winding number in small regions, and determine the exponent characterizing the correlation between defects and antidefects to be 0.26$\pm$0.11, in very good agreement with the value 1/4 predicted by the Kibble mechanism for defect production. We also describe a novel technique to determine the director distribution in observations of defect networks.
118413103
Entropy scaling and thermalization in hadron-hadron collisions at LHC
The recent LHC data have once more brought the issue of the formation of thermalized state of matter in hadron-hadron collisions into the forefront. In this letter, we have shown that the scaling of the information entropy of the chaotically produced particles is valid up to recently available data from p+p collisions at $\sqrt{s}$ = 2.36 TeV obtained by ALICE experiment. We predict that at the highest energies projected for LHC, almost all the particles will be produced chaotically, indicating that a collective behavior should be observed in hadronic collisions, as indicated by one of present authors quite some time ago.
118664075
PNJL model with a Van der Monde term
We extend the Polyakov-Nambu-Jona-Lasinio (PNJL) model for two degenerate ﬂavours by in-cluding the eﬀect of the SU(3) measure with a Vandermonde (VdM) term. This ensures that thePolyakov loop always remains in the domain [0,1]. The pressure, energy density, speciﬁc heat, speedof sound and conformal measure show small or negligible eﬀects from this term. However variousquark number and isospin susceptibilities are all found to approach their respective ideal gas limitsaround 2 T
119158093
The consequences of SU (3) colorsingletness, Polyakov Loop and Z (3) symmetry on a quark–gluon gas
Based on quantum statistical mechanics we show that the SU(3) color singlet ensemble of a quark-gluon gas exhibits a Z(3) symmetry through the normaized character in fundamental representation and also becomes equivalent, within a stationary point approximation, to the ensemble given by Polyakov Loop. Also Polyakov Loop gauge potential is obtained by considering spatial gluons along with the invariant Haar measure at each space point. The probability of the normalized character in SU(3) vis-a-vis Polyakov Loop is found to be maximum at a particular value exhibiting a strong color correlation. This clearly indicates a transition from a color correlated to uncorrelated phase or vise-versa. When quarks are included to the gauge fields, a metastable state appears in the temperature range 145 T(MeV) 170 due to the explicit Z(3) symmetry breaking in the quark-gluon system. Beyond T 170 MeV the metastable state disappears and stable domains appear. At low temperature a dynamical recombination of ionized Z(3) color charges to a color singlet Z(3) confined phase is evident along with a confining background that originates due to circulation of two virtual spatial gluons but with conjugate Z(3) phases in a closed loop. We also discuss other possible consequences of the center domains in the color deconfined phase at high temperature.