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Author |
de Azcarraga, J.A.; Izquierdo, J.M.; Picon, M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Contractions of Filippov algebras |
Type |
Journal Article |
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Year |
2011 |
Publication |
Journal of Mathematical Physics |
Abbreviated Journal |
J. Math. Phys. |
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Volume |
52 |
Issue |
1 |
Pages |
013516 - 24pp |
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Abstract |
We introduce in this paper the contractions B-c of n-Lie (or Filippov) algebras B and show that they have a semidirect structure as their n = 2 Lie algebra counterparts. As an example, we compute the nontrivial contractions of the simple A(n+1) Filippov algebras. By using the. Inonu-Wigner and the generalized Weimar-Woods contractions of ordinary Lie algebras, we compare (in the B = A(n+1) simple case) the Lie algebras Lie B-c (the Lie algebra of inner endomorphisms of B-c) with certain contractions (Lie B)(IW) and (Lie B)(W-W) of the Lie algebra Lie B associated with B. |
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Address |
[de Azcarraga, Jose A.; Picon, Moises] Univ Valencia, Dept Theoret Phys, E-46100 Valencia, Spain, Email: j.a.de.azcarraga@ific.uv.es |
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Amer Inst Physics |
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0022-2488 |
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ISI:000286898400034 |
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no |
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yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
574 |
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Author |
de Azcarraga, J.A.; Izquierdo, J.M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
On a class of n-Leibniz deformations of the simple Filippov algebras |
Type |
Journal Article |
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Year |
2011 |
Publication |
Journal of Mathematical Physics |
Abbreviated Journal |
J. Math. Phys. |
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Volume |
52 |
Issue |
2 |
Pages |
023521 - 13pp |
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Abstract |
We study the problem of infinitesimal deformations of all real, simple, finite-dimensional Filippov (or n-Lie) algebras, considered as a class of n-Leibniz algebras characterized by having an n-bracket skewsymmetric in its n-1 first arguments. We prove that all n > 3 simple finite-dimensional Filippov algebras (FAs) are rigid as n-Leibniz algebras of this class. This rigidity also holds for the Leibniz deformations of the semisimple n = 2 Filippov (i.e., Lie) algebras. The n = 3 simple FAs, however, admit a nontrivial one-parameter infinitesimal 3-Leibniz algebra deformation. We also show that the n >= 3 simple Filippov algebras do not admit nontrivial central extensions as n-Leibniz algebras of the above class. |
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Address |
[de Azcarraga, Jose A.] Univ Valencia, Dept Theoret Phys, E-46100 Burjassot, Valencia, Spain, Email: j.a.de.azcarraga@ific.uv.es |
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Amer Inst Physics |
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0022-2488 |
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ISI:000287811800050 |
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no |
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yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
558 |
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Author |
Navarro, J.; Mateo, D.; Barranco, M.; Sarsa, A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Mg impurity in helium droplets |
Type |
Journal Article |
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Year |
2012 |
Publication |
Journal of Chemical Physics |
Abbreviated Journal |
J. Chem. Phys. |
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Volume |
136 |
Issue |
5 |
Pages |
054301 - 9pp |
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Abstract |
Within the diffusion Monte Carlo approach, we have determined the structure of isotopically pure and mixed helium droplets doped with one magnesium atom. For pure He-4 clusters, our results confirm those of Mella et al. [J. Chem. Phys. 123, 054328 (2005)1 that the impurity experiences a transition from a surface to a bulk location as the number of helium atoms in the droplet increases. Contrarily, for pure He-3 clusters Mg resides in the bulk of the droplet due to the smaller surface tension of this isotope. Results for mixed droplets are presented. We have also obtained the absorption spectrum of Mg around the 3s3p P-1(1) <- 3s(2) S-1(0) transition. |
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[Sarsa, A.] Univ Cordoba, Dept Fis, Fac Ciencias, E-14071 Cordoba, Spain, Email: fa1sarua@uco.es |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Inst Physics |
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0021-9606 |
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Notes |
WOS:000300547200018 |
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no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
921 |
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Author |
Mateo, D.; Pi, M.; Navarro, J.; Toennies, J.P. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
A density functional study of the structure of small OCS@He-3(N) clusters |
Type |
Journal Article |
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Year |
2013 |
Publication |
Journal of Chemical Physics |
Abbreviated Journal |
J. Chem. Phys. |
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Volume |
138 |
Issue |
4 |
Pages |
044321 - 8pp |
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Abstract |
Kohn-Sham density functional calculations are reported for the structures of clusters consisting of a carbonyl sulfide (OCS) molecule with N = 1, 8, 18, and 40 attached He-3 atoms. The N = 1 cluster ground state is highly localized at the molecular waist (donut ring position), but for higher levels of excitation becomes increasingly delocalized. The first magic cluster with 8 atoms has a significant density at both ends of the molecule in addition to the donut ring. With N = 18 He-3 atoms the molecule is enclosed by a magic number closed shell. Another magic stable structure consisting of two nearly isotropically spherical closed shells is found at N = 40. A comparison with calculations for the same sized He-4 clusters show some important similarities, e. g., pile up at the donut ring position but altogether a more diffuse, less anisotropic structure. These results are discussed in the light of the recently analyzed infrared spectra measured in large pure He-3 droplets (N approximate to 1.2 x 10(4)) [B. Sartakov, J. P. Toennies, and A. F. Vilesov, J. Chem. Phys. 136, 134316 (2012)]. The moments of inertia of the 11 atom spherical shell structure, which is consistent with the experimental spectrum, lies between the predicted moments of inertia for N = 8 and N = 18 clusters. Overall the calculations reveal that the structures and energies of small doped He-3 are only slightly more diffuse and less energetic than the same He-4 clusters. |
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[Mateo, David; Pi, Marti] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain |
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Amer Inst Physics |
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0021-9606 |
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Notes |
WOS:000314725900038 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1337 |
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Author |
Leal, A.; Mateo, D.; Pi, M.; Barranco, M.; Navarro, J. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
The structure of mixed He-3-He-4 droplets doped with OCS: A density functional approach |
Type |
Journal Article |
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Year |
2013 |
Publication |
Journal of Chemical Physics |
Abbreviated Journal |
J. Chem. Phys. |
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Volume |
139 |
Issue |
17 |
Pages |
174308 - 6pp |
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Keywords |
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Abstract |
We have investigated the structure and energetics of mixed He-3-He-4 droplets doped with a carbonyl sulfide molecule within a density functional approach considering a small but finite temperature of 0.1 K. The molecule is treated as an external field to which the helium droplet is attached. The energetics and appearance of these droplets are discussed for selected numbers of helium atoms, identifying the first magic numbers of the fermionic component. |
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Address |
[Leal, Antonio; Mateo, David; Pi, Marti; Barranco, Manuel] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Inst Physics |
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English |
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0021-9606 |
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Notes |
WOS:000326922300022 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1658 |
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Permanent link to this record |
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Author |
Greynat, D.; Sesma, J.; Vulvert, G. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Derivatives of the Pochhammer and reciprocal Pochhammer symbols and their use in epsilon-expansions of Appell and Kampe de Feriet functions |
Type |
Journal Article |
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Year |
2014 |
Publication |
Journal of Mathematical Physics |
Abbreviated Journal |
J. Math. Phys. |
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Volume |
55 |
Issue |
4 |
Pages |
043501 - 16pp |
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Keywords |
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Abstract |
Useful expressions of the derivatives, to any order, of Pochhammer and reciprocal Pochhammer symbols with respect to their arguments are presented. They are building blocks of a procedure, recently suggested, for obtaining the e-expansion of functions of the hypergeometric class related to Feynman integrals. The procedure is applied to some examples of such kind of functions taken from the literature. |
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Address |
[Greynat, David] Ist Nazl Fis Nucl, Dipartimento Fis, Sez Napoli, I-80126 Naples, Italy, Email: david.greynat@gmail.com; |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Inst Physics |
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English |
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0022-2488 |
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Notes |
WOS:000336084100030 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
1799 |
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Permanent link to this record |
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Author |
Pavez, C.; Pedreros, J.; Tarifeño-Saldivia, A.; Soto, L. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Observation of plasma jets in a table top plasma focus discharge |
Type |
Journal Article |
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Year |
2015 |
Publication |
Physics of Plasmas |
Abbreviated Journal |
Phys. Plasmas |
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Volume |
22 |
Issue |
4 |
Pages |
040705 - 5pp |
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Abstract |
In the last years, medium size Z-pinch experiments operating at tens of kJ are being used to create supersonic plasma jets. Those experiments are produced with wire arrays and radial foils, and they are conducted in generators based on water-filled transmission lines. Also plasma jets have been observed in small X-pinch experiments operating at 1 kJ. In this work, observations of plasma jets produced in a table top plasma focus device by means of optical and digital interferometry are shown. The device was operated at only similar to 70J, achieving 50 kA in 150 ns. The plasma jets were observed after the pinch, in the region close and on the anode, along the axis. The electron density measured from the jets is in the range 10(24)-10(25) m(-3). From two consecutive plasma images separated 18 ns, the axial jet velocity was measured in the order of 4 x 10(4) m/s. |
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Address |
[Pavez, Cristian; Pedreros, Jose; Tarifeno-Saldivia, Ariel; Soto, Leopoldo] CCHEN, Comis Chilena Energia Nucl, Santiago, Chile, Email: lsoto@cchen.cl |
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Amer Inst Physics |
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English |
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1070-664x |
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Notes |
WOS:000353837200006 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2400 |
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Permanent link to this record |
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Author |
Cirigliano, V.; Ecker, G.; Neufeld, H.; Pich, A.; Portoles, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Kaon decays in the standard model |
Type |
Journal Article |
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Year |
2012 |
Publication |
Reviews of Modern Physics |
Abbreviated Journal |
Rev. Mod. Phys. |
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Volume |
84 |
Issue |
1 |
Pages |
399-447 |
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Keywords |
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Abstract |
A comprehensive overview of kaon decays is presented. The standard model predictions are discussed in detail, covering both the underlying short-distance electroweak dynamics and the important interplay of QCD at long distances. Chiral perturbation theory provides a universal framework for treating leptonic, semileptonic, and nonleptonic decays including rare and radiative modes. All allowed decay modes with branching ratios of at least 10 (11) are analyzed. Some decays with even smaller rates are also included. Decays that are strictly forbidden in the standard model are not considered in this review. The present experimental status and the prospects for future improvements are reviewed. |
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Address |
[Cirigliano, Vincenzo] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA, Email: cirigliano@lanl.gov |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Physical Soc |
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English |
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0034-6861 |
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Notes |
WOS:000301854600001 |
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no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
946 |
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Permanent link to this record |
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Author |
Bernabeu, J.; Martinez-Vidal, F. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Colloquium: Time-reversal violation with quantum-entangled B mesons |
Type |
Journal Article |
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Year |
2015 |
Publication |
Reviews of Modern Physics |
Abbreviated Journal |
Rev. Mod. Phys. |
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Volume |
87 |
Issue |
1 |
Pages |
165-182 |
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Abstract |
Symmetry transformations have been proven a bedrock tool for understanding the nature of particle interactions, formulating, and testing fundamental theories. Based on the up to now unbroken CPT symmetry, the violation of the CP symmetry between matter and antimatter by weak interactions, discovered in the decay of kaons in 1964 and observed more recently in 2001 in B mesons, strongly suggests that the behavior of these particles under weak interactions must also be asymmetric under time reversal T. However, until recent years there has not been a direct detection of the expected time-reversal violation in the time evolution of any system. This Colloquium examines the field of time-reversal symmetry breaking in the fundamental laws of physics. For transitions, its observation requires an asymmetry with exchange of initial and final states. A discussion is given of the conceptual basis for such an exchange with unstable particles, using the quantum properties of Einstein-Podolsky-Rosen entanglement available at B meson factories combined with the decay as a filtering measurement. The method allows a clear-cut separation of different transitions between flavor and CP eigenstates in the decay of neutral B mesons. These ideas have been implemented for the experiment by the BABAR Collaboration at SLAC's B factory. The results, presented in 2012, prove beyond any doubt the violation of time-reversal invariance in the time evolution between these two states of the neutral B meson. |
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Address |
[Bernabeu, J.; Martinez-Vidal, F.] Univ Valencia, CSIC, IFIC, E-46071 Valencia, Spain, Email: Jose.Bernabeu@uv.es; |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Physical Soc |
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English |
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ISSN |
0034-6861 |
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Notes |
WOS:000352076500001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
2179 |
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Permanent link to this record |
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Author |
Kogler, R.; Nachman, B.; Schmidt, A.; Asquith, L.; Winkels, E.; Campanelli, M.; Delitzsch, C.; Harris, P.; Hinzmann, A.; Kar, D.; McLean, C.; Pilot, J.; Takahashi, Y.; Tran, N.; Vernieri, C.; Vos, M. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Jet substructure at the Large Hadron Collider |
Type |
Journal Article |
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Year |
2019 |
Publication |
Reviews of Modern Physics |
Abbreviated Journal |
Rev. Mod. Phys. |
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Volume |
91 |
Issue |
4 |
Pages |
045003 - 44pp |
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Keywords |
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Abstract |
Jet substructure has emerged to play a central role at the Large Hadron Collider, where it has provided numerous innovative ways to search for new physics and to probe the standard model, particularly in extreme regions of phase space. This review focuses on the development and use of state-of-the-art jet substructure techniques by the ATLAS and CMS experiments. |
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Address |
[Kogler, Roman; Hinzmann, Andreas] Univ Hamburg, Hamburg, Germany, Email: roman.kogler@uni-hamburg.de; |
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Publisher ![sorted by Publisher field, ascending order (up)](img/sort_asc.gif) |
Amer Physical Soc |
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English |
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0034-6861 |
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Expedition |
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Conference |
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Notes |
WOS:000505698100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4238 |
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Permanent link to this record |