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Author |
Debastiani, V.R.; Navarra, F.S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
A non-relativistic model for the [cc][(c)over-bar(c)over-bar] tetraquark |
Type |
Journal Article |
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Year |
2019 |
Publication |
Chinese Physics C |
Abbreviated Journal |
Chin. Phys. C |
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Volume |
43 |
Issue |
1 |
Pages |
013105 - 20pp |
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Keywords ![sorted by Keywords field, descending order (down)](img/sort_desc.gif) |
tetraquark; charmonium; diquark-antidiquark; nonrelativistic; spin |
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Abstract |
We use a non-relativistic model to study the spectroscopy of a tetraquark composed of [cc][(c) over bar(c) over bar] in a diquark-antidiquark configuration. By numerically solving the Schrodinger equation with a Cornell-inspired potential, we separate the four-body problem into three two-body problems. Spin-dependent terms (spin-spin, spin-orbit and tensor) are used to describe the splitting structure of the c (c) over bar spectrum and are also extended to the interaction between diquarks. Recent experimental data on charmonium states are used to fix the parameters of the model and a satisfactory description of the spectrum is obtained. We find that the spin-dependent interaction is sizable in the diquark-antidiquark system, despite the heavy diquark mass, and also that the diquark has a finite size if treated in the same way as the c (c) over bar systems. We find that the lowest S-wave T-4c tetraquarks might be below their thresholds of spontaneous dissociation into low-lying charmonium pairs, while orbital and radial excitations would be mostly above the corresponding charmonium pair thresholds. Finally, we repeat the calculations without the confining part of the potential and obtain bound diquarks and bound tetraquarks. This might be relevant to the study of exotic charmonium in the quark-gluon plasma. The T4c states could be investigated in the forthcoming experiments at the LHC and Belle II. |
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Address |
[Debastiani, V. R.] Univ Valencia, CSIC, Inst Invest Paterna, Dept Fis Teor, Aptdo 22085, Valencia 46071, Spain, Email: vinicius.rodrigues@ific.uv.es; |
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Publisher |
Iop Publishing Ltd |
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English |
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ISSN |
1674-1137 |
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Notes |
WOS:000454936600005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
3865 |
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Author |
PANDA Collaboration (Davi, F. et al); Diaz, J. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Technical design report for the endcap disc DIRC |
Type |
Journal Article |
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Year |
2022 |
Publication |
Journal of Physics G |
Abbreviated Journal |
J. Phys. G |
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Volume |
49 |
Issue |
12 |
Pages |
120501 - 128pp |
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Keywords ![sorted by Keywords field, descending order (down)](img/sort_desc.gif) |
technical design report; particle identification; Cherenkov detector; PANDA |
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Abstract |
PANDA (anti-proton annihiliation at Darmstadt) is planned to be one of the four main experiments at the future international accelerator complex FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany. It is going to address fundamental questions of hadron physics and quantum chromodynamics using cooled antiproton beams with a high intensity and and momenta between 1.5 and 15 GeV/c. PANDA is designed to reach a maximum luminosity of 2 x 10(32) cm(-2) s. Most of the physics programs require an excellent particle identification (PID). The PID of hadronic states at the forward endcap of the target spectrometer will be done by a fast and compact Cherenkov detector that uses the detection of internally reflected Cherenkov light (DIRC) principle. It is designed to cover the polar angle range from 5 degrees to 22 degrees and to provide a separation power for the separation of charged pions and kaons up to 3 standard deviations (s.d.) for particle momenta up to 4 GeV/c in order to cover the important particle phase space. This document describes the technical design and the expected performance of the novel PANDA disc DIRC detector that has not been used in any other high energy physics experiment before. The performance has been studied with Monte-Carlo simulations and various beam tests at DESY and CERN. The final design meets all PANDA requirements and guarantees sufficient safety margins. |
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Address |
[Davi, F.] Univ Politecn Marche Ancona, Ancona, Italy, Email: muschmidt@uni-wuppertal.de |
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Publisher |
IOP Publishing Ltd |
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English |
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ISSN |
0954-3899 |
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Conference |
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Notes |
WOS:000928188400001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5476 |
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Permanent link to this record |
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Author |
Abraham, R.M. et al; Garcia Soto, A. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Tau neutrinos in the next decade: from GeV to EeV |
Type |
Journal Article |
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Year |
2022 |
Publication |
Journal of Physics G |
Abbreviated Journal |
J. Phys. G |
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Volume |
49 |
Issue |
11 |
Pages |
110501 - 148pp |
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Keywords ![sorted by Keywords field, descending order (down)](img/sort_desc.gif) |
tau neutrinos; neutrino experiments; tau neutrino theory |
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Abstract |
Tau neutrinos are the least studied particle in the standard model. This whitepaper discusses the current and expected upcoming status of tau neutrino physics with attention to the broad experimental and theoretical landscape spanning long-baseline, beam-dump, collider, and astrophysical experiments. This whitepaper was prepared as a part of the NuTau2021 Workshop. |
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Address |
[Abraham, Roshan Mammen; Ismail, Ahmed] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA, Email: pdenton@bnl.gov |
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Publisher |
IOP Publishing Ltd |
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English |
Summary Language |
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Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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ISSN |
0954-3899 |
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Conference |
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Notes |
WOS:000865870700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
5377 |
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Permanent link to this record |
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Author |
Gersabeck, E.; Pich, A. |
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Title |
Tau and charm decays |
Type |
Journal Article |
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Year |
2020 |
Publication |
Comptes Rendus Physique |
Abbreviated Journal |
C. R. Phys. |
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Volume |
21 |
Issue |
1 |
Pages |
75-92 |
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Keywords ![sorted by Keywords field, descending order (down)](img/sort_desc.gif) |
Tau and charm physics; D-0 mixing; CP violation |
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Abstract |
A summary of recent precise results in tau and charm physics is presented. Topics include leptonic and hadronic tau decays, lepton flavour and lepton number violation, charm mixing and CP violation, leptonic and semileptonic charm decays, rare decays and spectroscopy. |
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Address |
[Gersabeck, Evelina] Univ Manchester, Oxford Rd, Manchester M13 9PL, Lancs, England, Email: evelina.gersabeck@cern.ch; |
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Publisher |
centre Mersenne pour ldition scientifique ouverte |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1631-0705 |
ISBN |
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Expedition |
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Conference |
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Notes |
WOS:000573985600006 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4550 |
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Permanent link to this record |
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Author |
T2K Collaboration (Abe, K. et al); Antonova, M.; Cervera-Villanueva, A.; Fernandez, P.; Izmaylov, A.; Novella, P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Search for neutral-current induced single photon production at the ND280 near detector in T2K |
Type |
Journal Article |
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Year |
2019 |
Publication |
Journal of Physics G |
Abbreviated Journal |
J. Phys. G |
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Volume |
46 |
Issue |
8 |
Pages |
08LT01 - 16pp |
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Keywords ![sorted by Keywords field, descending order (down)](img/sort_desc.gif) |
T2K; neutrino; neutrino oscillation; neutrino interaction; Mini-BooNE; CP violation |
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Abstract |
Neutrino neutral-current (NC) induced single photon production is a sub-leading order process for accelerator-based neutrino beam experiments including T2K. It is, however, an important process to understand because it is a background for electron (anti)neutrino appearance oscillation experiments. Here, we performed the first search of this process below 1 GeV using the fine-grained detector at the T2K ND280 off-axis near detector. By reconstructing single photon kinematics from electron-positron pairs, we achieved 95% pure gamma ray sample from 5.738 x 10(20) protons-on-targets neutrino mode data. We do not find positive evidence of NC induced single photon production in this sample. We set the model-dependent upper limit on the cross-section for this process, at 0.114 x 10(-38) cm(2) (90% C.L.) per nucleon, using the J-PARC off-axis neutrino beam with an average energy of < E-v > similar to 0.6 GeV. This is the first limit on this process below 1 GeV which is important for current and future oscillation experiments looking for electron neutrino appearance oscillation signals. |
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Address |
[Berguno, D. Bravo; Ishii, T.; Labarga, L.] Univ Autonoma Madrid, Dept Theoret Phys, Madrid, Spain |
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Corporate Author |
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Thesis |
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Publisher |
Iop Publishing Ltd |
Place of Publication |
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Editor |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
0954-3899 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
WOS:000518888100001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
4318 |
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Permanent link to this record |