... IOR/L/MIL/5/609 Letter. From M. Meson.
0000 - Gale Group | NCCO EuropeAfrica
Xin-Li Sheng, Zuo-tang Liang, Qun Wang,
... baryons and the global spin alignment of vector mesons. The spin alignment refers to the <inline-formula>< ... element of the spin density matrix for vector mesons. When a vector meson decays to two pseudoscalar mesons, the polar angle distribution for the decay product ... quark polarization, while the spin alignment of vector mesons reflects the local phase space correlation between the ... theoretical works about the spin alignment of vector mesons. We consider a non-relativistic quark coalescence model ...
Tópico(s): Pulsars and Gravitational Waves Research
2023 - Science Press | Acta Physica Sinica
Springer Link
Phil Yates, Julia Llewellyn Smith, Jakobovits, Doug Jones, Iain R. Webb, Anatol Lieven, Patricia Davies, Tim Judah and Dessa Trevisan, Barry Trowbridge, Alison Roberts Arts Reporter, Jill Sherman Political Correspondent, D. F. Eccles, Alan M. Sugar, Chairman, David Blunkett, Philip Howard, Hilary Finch, Jeremy Kingston, Clive Davis, Melinda Wittstock, Media Correspondent, W. Turner, Carol Leonard, Srikumar Sen, Richard Streeton, Stewart Tendler, Crime Correspondent, Gerald Davies, Ray Clancy, Joe Joseph, Bernard Levin, Thunderer, Stuart Jones, Bruce Clark, Norman Hammond, Archaeology Correspondent, Patricia Tehan, Jim McCue, T. B. Martin, Louise Taylor, Hilda C. Kew, Richard Evans, Racing Correspondent, Alison Roberts, Arts Reporter, Ruth Gledhill Religion Correspondent, Martin Barrow, Michael Evans, Defence Correspondent, Jeremy Laurance Health Services Correspondent, Louise Hidalgo, Nicholas Watt, Michael McCarthy, Environment Correspondent, Anatole Kaletsky, Rupert Allason, Keith Pike, Charles Bremner, Tilson Thomas, Neil Bennett Banking Correspondent, Janet Langdon, Alan Manning, S. Machin, C. R. Bawden, Russell Kempson, Sydney Friskin, Nicholas Harling, E. C. Bennett, David Miller, Anthony Parish, John Higgins, Philip Willan, John Russell Taylor, Peter Scott, Raymond Keene, Chess Correspondent, Craig Brown, Frances Gibb, Legal Correspondent, J. Enoch Powell, David Powell, Athletics Correspondent, Barry Pickthall, Jenny Knight and Stewart Tendler, Ian Ross, David Hands Rugby Correspondent, Martin Waller, Deputy City Editor, Joanna Pitman, Roderick MacKay, Edward Gorman, Ireland Correspondent, David Rudnick, Sara McConnell, Christopher Walker, James Pringle, Ross Tieman Industrial Correspondent, Alice Thomson and Callum Murray, Matthew Parris, Richard Evans Racing Correspondent, Liz Smith, Michael Hornsby, John Shaw, Keith Blackmore, Alan Lee, Walter Gammie, Peter Riddell, Ben MacIntyre, Peter Victor, Shelagh Diplock, Director, Tony Dawe, Stephen Pettitt, Martin Waller, Benedict Nightingale, Nicholas Watt and Michael Dynes, Jill Sherman, Political Correspondent, Tom Walker and Michael Hornsby, William Darby, Rob Andrew, David Powell, Sam Kiley, Sarah Newton, John O'leary, Education Correspondent, David Hands, Rugby Correspondent, Christopher Irvine, Michael Molyneux,
... union tour ends in record defeat at Twickenham Meson gives Argentina historic win Clifton save the best ...
1992 - Gale Group | TDA
Ahmad Jafar Arifi, Ho-Meoyng Choi, Chueng‐Ryong Ji, Yongseok Oh,
... 2S$ state heavy pseudoscalar ($P$) and vector ($V$) mesons are analyzed within the light-front quark model. ... f_{1S}>f_{2S}$, between $1S$ and $2S$ meson states. We maintain the orthogonality of the trial ... heavy-heavy and heavy-light $P$ and $V$ mesons due to the nature of the heavy quark ... to be more significant to the $2S$ state mesons than to the $1S$ state mesons. The properties of $1S$ and $2S$ state mesons including the mass spectra, decay constants, twist-2 ... In particular, the $2S$ state pseudoscalar $D_s$ meson is predicted to have a mass of $2600$ ...
Tópico(s): High-Energy Particle Collisions Research
2022 - American Physical Society | Physical review. D/Physical review. D.
S. Acharya, D. Adamová, A. Adler, J. Adolfsson, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, S. Ahmad, S. U. Ahn, I. Ahuja, Z. Akbar, A. Akindinov, M. Al-Turany, S.N. Alam, D. Aleksandrov, B. Alessandro, H. M. Alfanda, R. Alfaro Molina, B. Ali, Y. Ali, A. Alici, N. Alizadehvandchali, A. Alkin, J. Alme, T. Alt, L. Altenkamper, I. Altsybeev, Mustafa Anaam, C. Andrei, D. Andreou, A. Andronic, M. Angeletti, V. Anguelov, F. Antinori, P. Antonioli, C. Anuj, N. Apadula, L. Aphecetche, H. Appelshäuser, S. Arcelli, R. Arnaldi, I. C. Arsene, M. Arslandok, A. Augustinus, R. Averbeck, S. Aziz, M. D. Azmi, A. Badalà, Y. W. Baek, X. Bai, R. Bailhache, Y. Bailung, R. Bala, A. Balbino, A. Baldisseri, Bartosz Baliś, D. Banerjee, R. Barbera, L. Barioglio, M. Barlou, G. G. Barnaföldi, L. S. Barnby, V. Barret, C. Bartels, K. Barth, E. Bartsch, F. Baruffaldi, N. Bastid, S. Basu, G. Batigne, B. Batyunya, D. Bauri, J. L. Bazo Alba, I. G. Bearden, C. Beattie, I. Belikov, A. D. C. Bell Hechavarria, F. Bellini, R. Bellwied, S. Belokurova, V. Belyaev, G. Bencedi, S. Beolè, A. Bercuci, Y. Berdnikov, A. Berdnikova, L. Bergmann, M. G. Besoiu, L. Betev, P.P. Bhaduri, A. Bhasin, I. R. Bhat, M. A. Bhat, B. Bhattacharjee, P. Bhattacharya, L. Bianchi, N. Bianchi, J. Bielčík, J. Bielčíková, J. Biernat, A. Bilandzic, G. Biro, S. Biswas, J.T. Blair, D. Blau, M. B. Blidaru, C. Blume, G. Boca, F. Bock, A. Bogdanov, S. Boi, J. Bok, L. Boldizsár, A. Bolozdynya, M. Bombara, P. M. Bond, G. Bonomi, H. Borel, A. Borissov, H. Bossi, E. Botta, L. Bratrud, P. Braun-Munzinger, M. Bregant, M. Broz, G. Bruno, M. D. Buckland, D. Budnikov, H. Buesching, S. Bufalino, O. Bugnon, P. Bühler, Z. Buthelezi, J. Butt, A. Bylinkin, S. A. Bysiak, M. Cai, H. Caines, A. Calivà, E. Calvo Villar, J. M. M. Camacho, R. S. Camacho, P. Camerini, F. D. M. Canedo, F. Carnesecchi, R. Caron, J. Castillo Castellanos, E. A. R. Casula, F. Catalano, C. Ceballos Sánchez, P. Chakraborty, S. Chandra, S. Chapeland, M. Chartier, S. Chattopadhyay, S. Chattopadhyay, A. Chauvin, T. G. Chavez, T. Cheng, C. Cheshkov, B. Cheynis, V. Chibante Barroso, D. D. Chinellato, S. Cho, P. Chochula, P. Christakoglou, C. H. Christensen, P. Christiansen, T. Chujo, C. Cicalò, L. Cifarelli, F. Cindolo, M. R. Ciupek, G. Clai, J. Cleymans, F. Colamaria, J. S. Colburn, D. Colella, A. Collu, M. Colocci, M. Concas, G. Conesa Balbastre, Z. Conesa del Valle, G. Contin, J. G. Contreras, M. L. Coquet, T.M. Cormier, P. Cortese, M. R. Cosentino, F. Costa, S. Costanza, P. Crochet, R. Cruz-Torres, E. Cuautle, P. Cui, L. Cunqueiro, A. Dainese, Meike Charlotte Danisch, A. Danu, I. Das, P. Das, P. Das, S. Das, S. Dash, S. De, A. De, G. de Cataldo, G. de Cataldo, J. de Cuveland, D. De Gruttola, D. De Gruttola, C. De Martín, C. De Martín, S. De Pasquale, S. Deb, H. F. Degenhardt, K. R. Deja, L. Dello Stritto, W. Deng, P. Dhankher, D. Di Bari, A. Di Mauro, Raúl Arteche Díaz, T. Dietel, Y. Ding, R. Divià, D. U. Dixit, Ø. Djuvsland, U. Dmitrieva, J. Do, A. Dobrin, Benjamin Dönigus, O. Dordic, A. K. Dubey, A. Dubla, S. Dudi, P. Dupieux, Natalia Dzalaiova, T. M. Eder, R. J. Ehlers, V.N. Eikeland, F. Eisenhut, D. Elia, B. Erazmus, F. Ercolessi, F. Erhardt, A. Erokhin, M.R. Ersdal, B. Espagnon, G. Eulisse, D. Evans, S. Evdokimov, L. Fabbietti, M. Faggin, J. Faivre, F. Fan, A. Fantoni, M. Fasel, P. Fecchio, A. Feliciello, Г. Феофилов, A. Fernández Téllez, A. Ferrero, A. Ferretti, V. J. G. Feuillard, J. Figiel, S. Filchagin, D. Finogeev, F. M. Fionda, G. Fiorenza, F. Flor, A. N. Flores, S. Foertsch, P. Foka, S. Fokin, E. Fragiacomo, E. Frajna, A. Francisco, U. Fuchs, N. Funicello, C. Furget, A. Furs, J. J. Gaardhøje, M. Gagliardi, A. M. Gago, A. Gal, Carlos Duarte Galvan, P. Ganoti, C. Garabatos, Jesús Ricardo Alvarado García, E. Garcia-Solis, Kunal Garg, Corrado Gargiulo, A. Garibli, K. Garner,
... yield and angular anisotropy of prompt ${D_s^+}$ mesons were measured as a function of transverse momentum ($ ... the ALICE detector at the LHC. ${D_s^+}$ mesons and their charge conjugates were reconstructed at midrapidity ($| ... T} 10$ GeV/$c$, the measured ${D_s^+}$-meson nuclear modification factor $R_{ AA}$ is consistent with the one of non-strange D mesons within uncertainties, while at lower $p_{ T}$ a hint for a ${D_s^+}$-meson $R_{ AA}$ larger than that of non-strange D mesons is seen. The enhanced production of ${D_s^+}$ ...
Elsevier BV
Pedro Bicudo, Antje Peters, Sebastian Velten, Marc Wagner,
... discussed competing structures for this tetraquark by considering meson-meson as well as diquark-antidiquark creation operators. We ... eigenvalue problems we determine the importance of the meson-meson and the diquark-antidiquark creation operators with respect ... J^P) = 0(1^+)$ tetraquark is mostly a meson-meson state. We also estimate the meson-meson to diquark-antidiquark ratio of this tetraquark and ...
Tópico(s): High-Energy Particle Collisions Research
2021 - American Physical Society | Physical review. D/Physical review. D.
Yin-Zhen Xu, S.-Y. Chen, Zhao-Qian Yao, Daniele Binosi, Zhu-Fang Cui, Craig D. Roberts,
We consider the fidelity of the vector meson dominance (VMD) assumption as an instrument for relating the electromagnetic vector-meson production reaction $e + p \to e^\prime + V + p$ to the ... VMD Ansatz might be reasonable for light vector-mesons. However, when the vector-mesons are described by momentum-dependent bound-state amplitudes, VMD fails for heavy vector-mesons: it cannot be used reliably to estimate either a photon-to-vector-meson transition strength or the momentum dependence of those ...
Tópico(s): High-Energy Particle Collisions Research
2021 - Springer Science+Business Media | The European Physical Journal C
Pedro Bicudo, Nuno Cardoso, Lasse Müller, Marc Wagner,
... reported by Belle in terms of quarkonium and meson-meson components. We use a recently developed novel approach ... the others correspond to pairs of heavy-light mesons. In a previous study, only one meson-meson channel ${\overline{B}}^{(*)}{B}^{(*)}$ was considered. Now, we ... resonance $\mathrm{\ensuremath{\Upsilon}}(10753)$ as a dynamical meson-meson resonance with around 76% meson-meson content. Moreover, we identify $\mathrm{\ensuremath{\Upsilon}}( ...
Tópico(s): Physics of Superconductivity and Magnetism
2021 - American Physical Society | Physical review. D/Physical review. D.
Mao-Jun Yan, Fang‐Zheng Peng, Mario Sánchez Sánchez, Manuel Pavón Valderrama,
... molecules were grounded on the idea that light-meson exchange forces could lead to binding. In analogy to the deuteron, the light mesons usually considered include the pion, sigma, rho and omega, but not the axial meson ${a}_{1}(1260)$. Though it has been argued ... the past that the coupling of the axial meson to the nucleons is indeed strong, its mass is considerably heavier than that of the vector mesons and thus its exchange ends up being suppressed. ... though the contribution to binding from the axial meson is modest, it cannot be neglected in the ...
Tópico(s): High-Energy Particle Collisions Research
2021 - American Physical Society | Physical review. D/Physical review. D.
B. Mohanty, Sourav Kundu, Subhash Singha, Ranbir Singh,
... alignment measurements of $K^{*0}$ and $\phi$ vector mesons in heavy-ion and pp collisions at RHIC ... energies are also discussed. Spin alignment of vector mesons are studied by measuring the second diagonal element $\ ... obtained by measuring the angular distribution of vector meson decay daughter with respect to the quantization axis in vector meson rest frame. Measured $\rho_{00}$ values for vector mesons are found to be larger than 1/3 ... LEP energies, suggesting the preferential production of vector meson with helicity zero state from the fragmentation process. ...
Tópico(s): Quantum Chromodynamics and Particle Interactions
2021 - World Scientific | Modern Physics Letters A
... terms of heavy quark-antiquark and open-flavor meson-meson components, to the description of coupled-channel meson-meson scattering. For this purpose, we first introduce a ... we derive a general formula for calculating the meson-meson scattering amplitudes from these solutions. We thus obtain ... nonperturbative procedure for the calculation of open-flavor meson-meson scattering cross sections from the diabatic potential, which ...
Tópico(s): High-Energy Particle Collisions Research
2021 - American Physical Society | Physical review. D/Physical review. D.
Produção Nacional
Revisado por pares
G. N. Zeminiani, J. J. Cobos-Martínez, K. Tsushima,
We estimate the $\Upsilon$, $\eta_b$ and $B^*$ meson mass shifts in symmetric nuclear matter. The interest ... J/\Psi,\Upsilon$) and ($\eta_c,\eta_b$) meson group is usually assumed to have very similar ... by studying the $BB$, $BB^*$, and $B^*B^*$ meson loop contributions for the self-energy. As for ... b$, we include the $BB^*$ and $B^*B^*$ meson loop contributions in the self-energy. The in-medium masses of the $B$ and $B^*$ mesons appearing in the self-energy are calculated by the quark-meson coupling model. An analysis on the $BB$, $BB^*$, ...
Tópico(s): Particle physics theoretical and experimental studies
2021 - Springer Science+Business Media | The European Physical Journal A
M. Sajjad Athar, J. G. Morfín,
... transfer to the hadronic system as non-resonant meson production with Q 2 ⪅ 1 GeV 2 . This non-resonant meson production intermixes with resonant meson production in a regime of similar effective hadronic ... To essentially separate this resonant plus non-resonant meson production from DIS quark-fragmented meson production, a cut of 2 GeV in W ... the interactions is generally introduced. However, since experimentally mesons from resonance decay cannot be separated from non-resonant produced mesons, SIS for all practical purposes in this review ...
Tópico(s): High-Energy Particle Collisions Research
2020 - IOP Publishing | Journal of Physics G Nuclear and Particle Physics
Yin-Zhen Xu, Daniele Binosi, Zhu-Fang Cui, B.-L. Li, Craig D. Roberts, Shu-Sheng Xu, Hong-Shi Zong,
... elastic electromagnetic form factors of the $\ensuremath{\rho}$-meson and subsequently to study the evolution of vector-meson form factors with current-quark mass. To facilitate ... are also computed. The analysis reveals that vector mesons are larger than pseudoscalar mesons; composite vector mesons are nonspherical, with magnetic and quadrupole moments that ... from point-particle values; in many ways, vector-meson properties are as much influenced by emergent mass as those of pseudoscalars; and vector-meson electric form factors possess a zero at spacelike ...
Tópico(s): Black Holes and Theoretical Physics
2019 - American Physical Society | Physical review. D/Physical review. D.
M. M. Nagels, Th. A. Rijken, Yasuo Yamamoto,
... force problem, the interactions are studied from the meson-exchange picture viewpoint, using generalized soft-core Yukawa functions. The meson exchanges are supplemented with diffractive contributions due to multiple-gluon exchanges. The extended-soft-core (ESC) meson-exchange interactions consist of local and nonlocal potentials ... nonets of pseudoscalar, vector, scalar, and axial-vector mesons, (ii) diffractive exchanges, (iii) two-pseudoscalar exchange (PS-PS), and (iv) meson-pair exchange (MPE). The OBE and MPE vertices ...
Tópico(s): High-Energy Particle Collisions Research
2019 - American Physical Society | Physical review. C
Nikhil Dhale, Sushruth Reddy P., Amal Jahan C. S., Amruta Mishra,
... the masses of the $B$ and $\overline{B}$ mesons in asymmetric nuclear matter in the presence of ... model. The medium modifications of these open bottom mesons arise due to their interactions with the scalar mesons and the nucleons. In the magnetized nuclear matter, ... the masses of the $B$ and $\overline{B}$ mesons are calculated from the leading term, namely the ... to the Weinberg-Tomozawa term, the $\overline{B}$ mesons experience an attractive interaction in the symmetric nuclear matter, whereas the $B$ mesons have a repulsive interaction. Inclusion of the contributions ...
Tópico(s): Pulsars and Gravitational Waves Research
2018 - American Physical Society | Physical review. C
... fitted Regge trajectories for a large majority of mesons that both the radial and orbital Regge trajectories for mesons prefer being concave. The concavity of the meson Regge trajectories is model-independent. If the convex ... as a criterion to choose a newly observed meson or to assign a particle to the unwell-established state. The curvature of the meson Regge trajectories can be taken as a guide ... Regge trajectories according to the concavity of the meson Regge trajectories. If the large majority of the ...
Tópico(s): High-Energy Particle Collisions Research
2018 - Elsevier BV | Physics Letters B
... into $$\eta _c$$ plus a scalar or vector meson in a theoretical framework by taking into account ... process for the weak decay of $$\bar{B}$$ meson into $$\eta _c$$ and a $$q\bar{q}$$ ... q\bar{q}$$ component into pairs of pseudoscalar mesons we obtain certain weights for the pseudoscalar meson-pseudoscalar meson components. In addition, the $$\bar{B}^0$$ and $$\ ... is based on the postulation that the scalar mesons $$f_0(500)$$ , $$f_0(980)$$ and $$a_ ... 980)$$ are dynamically generated states from the pseudoscalar meson-pseudoscalar meson interactions in S-wave. Up to ...
Tópico(s): High-Energy Particle Collisions Research
2018 - Springer Science+Business Media | The European Physical Journal C
... show that the obtained Regge trajectories for the mesons consisting of unequally massive quarks take the form $$ ... trajectories to fit the spectra of the strange mesons, the heavy-light mesons (the D, $$D_s$$ , B and $$B_s$$ mesons) and the bottom-charmed mesons. The fitted Regge trajectories are in agreement with ... trajectories can be applied universally to the light mesons, the heavy-light mesons and the heavy mesons. By fitting the spectra of the mesons composed of different quarks, the concavity of these ...
Tópico(s): Black Holes and Theoretical Physics
2018 - Springer Science+Business Media | The European Physical Journal C
S. Campanella, Pietro Colangelo, Fulvia De Fazio,
... analyze strong decays of excited charmed and beauty mesons into a light vector meson, exploiting the effective field theory based on heavy quark (HQ) symmetries for heavy mesons, and on the hidden gauge symmetry to incorporate light vector mesons. HQ symmetries allow us to classify the heavy mesons in spin doublets, and to relate decays of ... p$, $d$, and $f$-wave heavy-light quark meson, $P$, ${P}^{*}$ the lowest-lying ${J}^{P}=({0}^{\ensuremath{-}},{1}^{\ensuremath{-}})$ heavy-light mesons, and V a light vector meson. Predictions are ...
Tópico(s): High-Energy Particle Collisions Research
2018 - American Physical Society | Physical review. D/Physical review. D.
V. Metag, M. Nanova, Kai-Thomas Brinkmann,
In the project B.4, the modification of meson properties (mass, width) in a nuclear medium has been studied in photoproduction of mesons off nuclear targets. This work has been motivated ... in terms of an optical potential describing the meson-nucleus interaction. Experimental approaches to determine the real and imaginary part of the meson-nucleus potential have been developed. The experiments have ... distribution for photo production of ω and η′ mesons, the real parts of the ω and η′- ... mass shift, have been determined. For the η′ meson a lowering of the mass at normal nuclear ...
Tópico(s): Particle physics theoretical and experimental studies
2017 - EDP Sciences | EPJ Web of Conferences
Gavin Cheung, Christopher E. Thomas, Jo Dudek, Robert G. Edwards,
... distillation framework, correlation functions involving large bases of meson-meson and tetraquark operators are computed in the isospin- ... addition of tetraquark operators to the bases of meson-meson operators. For the first time, through using diverse bases of meson-meson operators, the multiple energy levels associated with meson-meson levels which would be degenerate in the non- ... equal to the number of expected non-interacting meson-meson levels in the energy region considered and ...
Tópico(s): Particle physics theoretical and experimental studies
2017 - Springer Nature | Journal of High Energy Physics
... encounters a great challenge in describing even-parity mesons. Specifically, the $$q\bar{q}$$ quark model has difficulties in understanding the light scalar mesons below 1 GeV, scalar and axial-vector charmed mesons and $$1^+$$ charmonium-like state X(3872). A ... on the near mass degeneracy of scalar charmed mesons, $$D_{s0}^*$$ and $$D_0^{*0}$$ , and its implications. Within the framework of heavy meson chiral perturbation theory, we show that near degeneracy ... similarity of $$B_{s0}^*$$ and $$B_0^{*0}$$ mesons. The $$P_0^* P'_1$$ interaction with the ...
Tópico(s): High-Energy Particle Collisions Research
2017 - Springer Science+Business Media | The European Physical Journal C
Masayasu Harada, Yong-Liang Ma, Daiki Suenaga, Yusuke Takeda,
... density dependences of the masses of heavy-light mesons give some clues to the chiral symmetry structure in nuclear matter. We include the omega meson effect as well as the sigma meson effect at mean field level on the density dependence of the masses of heavy-light mesons with chiral partner structure. It is found that the omega meson affects the masses of the heavy-light mesons and their antiparticles in the opposite way, while ... the same way. This is because the omega meson is sensitive to the baryon number of the ...
Tópico(s): Particle physics theoretical and experimental studies
2017 - University of Oxford | Progress of Theoretical and Experimental Physics
Daiki Suenaga, Shigehiro Yasui, Masayasu Harada,
... D}\phantom{\rule{0.16em}{0ex}}({0}^{\ensuremath{-}})$ meson and a ${\overline{D}}_{0}^{*}\phantom{\rule{0.16em}{0ex}}({0}^{+})$ meson, and spectral functions for $\overline{D}$ and ${\overline{D}}_{0}^{*}$ meson channels in nuclear matter. These mesons are introduced as chiral partners in the chiral- ... a qualitative tendency of changes of $\overline{D}$ mesons at low density. Our study shows that the ... corrections to $\overline{D}$ and ${\overline{D}}_{0}^{*}$ meson masses provide a smaller mass splitting at finite ...
Tópico(s): Particle physics theoretical and experimental studies
2017 - American Physical Society | Physical review. C