Physical Review C

Journal: Physical Review C

Abbreviation

Phys. rev. C.

Publisher

American Physical Society

ISSN

0556-2813
1089-490X

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Publications 1 - 10 of 51

Measurement of the elliptic anisotropy of charged particles produced in PbPb collisions at √sNN=2.76 TeV
CMS Collaboration; Chatrchyan, Serguei; Bäni, Lukas; et al. (2013)
Physical Review C
The anisotropy of the azimuthal distributions of charged particles produced in √sNN=2.76 TeV PbPb collisions is studied with the CMS experiment at the LHC. The elliptic anisotropy parameter, v2, defined as the second coefficient in a Fourier expansion of the particle invariant yields, is extracted using the event-plane method, two- and four-particle cumulants, and Lee-Yang zeros. The anisotropy is presented as a function of transverse momentum (pT), pseudorapidity (η) over a broad kinematic range, 0.3
Ni-62(n,gamma) and Ni-63(n,gamma) cross sections measured at the n_TOF facility at CERN
n_TOF Collaboration; Lederer, Claudia; Dressler, Rugard; et al. (2014)
Physical Review C
New concept for a neutron electric dipole moment search using a pulsed beam
Piegsa, Florian M. (2013)
Physical Review C
169 Tm( n, 2n) 168 Tm and 169 Tm (n, 3n) 167 Tm cross-section measurements from 15 to 21 MeV
Finch, Sean F.; Bhike, Megha; Krishichayan, Fnu; et al. (2021)
Physical Review C
The 169Tm(n, 2n) 168Tm and 169Tm(n, 3n) 167Tm cross sections have been measured in the neutron energy range between 15 and 21 MeV using the 3 H(d, n) 4 He neutron source reaction. The 169Tm(n, 3n) 167Tm data are intended to provide an accurate database for interpreting so-called reaction-in-flight neutron yields, which provide a sensitive tool for studying properties of the deuterium-tritium plasma created in inertial confinement fusion laser shots at the National Ignition Facility at Lawrence Livermore National Laboratory. The data are compared to previous data and evaluations for the reaction studied and are found to be in good agreement with the ENDF/B-VIII.0 evaluation, although small adjustments are necessary for the 169Tm(n, 3n) 167Tm reaction. For the first time in any (n, 2n) cross-section measurements to date, a comprehensive data set ranging from threshold to 21 MeV has been obtained by the same group. ©2021 American Physical Society
Measurements of cross sections and charged pion spectra in proton-carbon interactions at 31 GeV/c
NA61/SHINE Collaboration; Abgrall, N.; Esposito, Luigi S.; et al. (2011)
Physical Review C
QEC-value determination for 21Na→21Ne and 23Mg→23Na mirror-nuclei decays using high-precision mass spectrometry with ISOLTRAP at the CERN ISOLDE facility
Karthein, Jonas; Atanasov, Dinko; Blaum, Klaus; et al. (2019)
Physical Review C
We report on high-precision QEC values of the 21Na→21Ne and 23Mg→23Na mirror β transitions from mass measurements with ISOLTRAP at the CERN ISOLDE facility. A precision of δm/m=9×10−10 and δm/m=1.5×10−9 was reached for the masses of 21Na and 23Mg, respectively. We reduce the uncertainty of the QEC values by a factor of 5, making them the most precise experimental input data for the calculation of the corrected Ft value of these mixed Fermi and Gamow-Teller transitions. For the 21Na→21NeQEC value, a 2.3σ deviation from the literature QEC value was found.
Neutron phase spin echo
Piegsa, Florian M.; Hautle, Patrick; Schanzer, Christian (2016)
Physical Review C
High-accuracy determination of the U-238/U-235 fission cross section ratio up to approximate to 1 GeV at n_TOF at CERN
n_TOF Collaboration; Paradela, C.; Calviani, M.; et al. (2015)
Physical Review C
The 238U to 235U fission cross section ratio has been determined at n_TOF up to ≈1 GeV, with two different detection systems, in different geometrical configurations. A total of four datasets has been collected and compared. They are all consistent to each other within the relative systematic uncertainty of 3–4%. The data collected at n_TOF have been suitably combined to yield a unique fission cross section ratio as a function of neutron energy. The result confirms current evaluations up to 200 MeV. Good agreement is also observed with theoretical calculations based on the INCL++/Gemini++ combination up to the highest measured energy. The n_TOF results may help solve a long-standing discrepancy between the two most important experimental datasets available so far above 20 MeV, while extending the neutron energy range for the first time up to ≈1 GeV.
Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS
CMS Collaboration; Sirunyan, Albert M.; Bachmair, Felix; et al. (2017)
Physical Review C
For the first time a principle-component analysis is used to separate out different orthogonal modes of the two-particle correlation matrix from heavy ion collisions. The analysis uses data from √sNN = 2.76 TeV PbPb and √sNN = 5.02 TeV pPb collisions collected by the CMS experiment at the CERN Large Hadron Collider. Two-particle azimuthal correlations have been extensively used to study hydrodynamic flow in heavy ion collisions. Recently it was shown that the expected factorization of two-particle results into a product of the constituent single-particle anisotropies is broken. The new information provided by these modes may shed light on the breakdown of flow factorization in heavy ion collisions. The first two modes (“leading” and “subleading”) of two-particle correlations are presented for elliptical and triangular anisotropies in PbPb and pPb collisions as a function of pT over a wide range of event activity. The leading mode is found to be essentially equivalent to the anisotropy harmonic previously extracted from two-particle correlation methods. The subleading mode represents a new experimental observable and is shown to account for a large fraction of the factorization breaking recently observed at high transverse momentum. The principle-component analysis technique was also applied to multiplicity fluctuations. These also show a subleading mode. The connection of these new results to previous studies of factorization is discussed.
Comparison of ultracold neutron sources for fundamental physics measurements
Bison, Georg; Daum, Manfred; Kirch, Klaus Stefan; et al. (2017)
Physical Review C

Publications 1 - 10 of 51

Journal: Physical Review C

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