612 results on '"vector [resonance]"'
Search Results
2. A direct current control strategy based on vector resonance controller for shunt active power filter
- Author
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Dongdong Chen, Zhenming Xu, Long Xiao, Wenduan Yan, and Yinbiao Guo
- Subjects
Vector resonance ,Active power filter(APF) ,Direct current control ,Harmonics compensation ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
From the perspective of complex vector, this paper derives the mathematical model of the three-phase three-wire shunt active power filter (SAPF) current control object, and based on it, derives the corresponding vector resonance control expression form coordinate transformation, and the steady-state accuracy, anti-interference ability, and stability of the system are analyzed. The deduction demonstrates the equivalence of the traditional detection load harmonic current control and the direct grid current control in this paper, and the consistency of the current regulator. Then, a direct vector resonance control structure of grid current based on the dq coordinate without detecting harmonic currents is designed, and the digital realization of the vector resonance controller, the adaptive ability to frequency, and the phase lag at the high-order control frequency are designed. And finally experimental verification under different working conditions is presented, the experimental results prove the practicability and effectiveness of the direct current control strategy based on the vector resonance controller proposed in this paper.
- Published
- 2022
- Full Text
- View/download PDF
3. Vector resonance X1(2900) and its structure
- Author
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Agaev, S.S., Azizi, K., and Sundu, H.
- Published
- 2021
- Full Text
- View/download PDF
4. Modelling top partner-vector resonance phenomenology
- Author
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Yepes, Juan and Zerwekh, Alfonso
- Published
- 2019
- Full Text
- View/download PDF
5. Search for a heavy vector resonance decaying to a $${\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}$$ Z boson and a Higgs boson in proton-proton collisions at $$\sqrt{s} = 13\,\text {Te}\text {V} $$ s = 13 Te
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Hauser, M. Ignatenko, M. A. Iqbal, T. Lam, N. Mccoll, W. A. Nash, S. Regnard, D. Saltzberg, C. Schnaible, B. Stone, V. Valuev, K. Burt, Y. Chen, R. Clare, J. W. Gary, G. Hanson, G. Karapostoli, O. R. Long, N. Manganelli, M. Olmedo Negrete, M. I. Paneva, W. Si, S. Wimpenny, Y. Zhang, J. G. Branson, S. Cittolin, S. Cooperstein, N. Deelen, J. Duarte, R. Gerosa, D. Gilbert, V. Krutelyov, J. Letts, M. Masciovecchio, S. May, S. Padhi, M. Pieri, V. Sharma, M. Tadel, F. Würthwein, A. Yagil, N. Amin, C. Campagnari, M. Citron, A. Dorsett, V. Dutta, J. Incandela, B. Marsh, H. Mei, A. Ovcharova, H. Qu, M. Quinnan, J. Richman, U. Sarica, D. Stuart, S. Wang, A. Bornheim, O. Cerri, I. Dutta, J. M. Lawhorn, N. Lu, J. Mao, H. B. Newman, J. Ngadiuba, T. Q. Nguyen, J. Pata, M. Spiropulu, J. R. Vlimant, C. Wang, S. Xie, Z. Zhang, R. Y. Zhu, J. Alison, M. B. Andrews, T. Ferguson, T. Mudholkar, M. Paulini, M. Sun, I. Vorobiev, J. P. Cumalat, W. T. Ford, E. MacDonald, T. Mulholland, R. Patel, A. Perloff, K. Stenson, K. A. Ulmer, S. R. Wagner, J. Alexander, Y. Cheng, J. Chu, D. J. Cranshaw, A. Datta, A. Frankenthal, K. Mcdermott, J. Monroy, J. R. Patterson, D. Quach, A. Ryd, W. Sun, S. M. Tan, Z. Tao, J. Thom, P. Wittich, M. Zientek, M. Albrow, M. Alyari, G. Apollinari, A. Apresyan, A. Apyan, L. A. T. Bauerdick, A. Beretvas, D. Berry, J. Berryhill, P. C. Bhat, K. Burkett, J. N. Butler, A. Canepa, G. B. Cerati, H. W. K. Cheung, F. Chlebana, M. Cremonesi, V. D. Elvira, J. Freeman, Z. Gecse, E. Gottschalk, L. Gray, D. Green, S. Grünendahl, O. Gutsche, R. M. Harris, S. Hasegawa, R. Heller, T. C. Herwig, J. Hirschauer, B. Jayatilaka, S. Jindariani, M. Johnson, U. Joshi, P. Klabbers, T. Klijnsma, B. Klima, M. J. Kortelainen, S. Lammel, D. Lincoln, R. Lipton, M. Liu, T. Liu, J. Lykken, K. Maeshima, D. Mason, P. McBride, P. Merkel, S. Mrenna, S. Nahn, V. O’Dell, V. Papadimitriou, K. Pedro, C. Pena, O. Prokofyev, F. Ravera, A. Reinsvold Hall, L. Ristori, B. Schneider, E. Sexton-Kennedy, N. Smith, A. Soha, W. J. Spalding, L. Spiegel, S. Stoynev, J. Strait, L. Taylor, S. Tkaczyk, N. V. Tran, L. Uplegger, E. W. Vaandering, H. A. Weber, A. Woodard, D. Acosta, P. Avery, D. Bourilkov, L. Cadamuro, V. Cherepanov, F. Errico, R. D. Field, D. Guerrero, B. M. Joshi, M. Kim, J. Konigsberg, A. Korytov, K. H. Lo, K. Matchev, N. Menendez, G. Mitselmakher, D. Rosenzweig, K. Shi, J. Sturdy, X. Zuo, T. Adams, A. Askew, D. Diaz, R. Habibullah, S. Hagopian, V. Hagopian, K. F. Johnson, R. Khurana, T. Kolberg, G. Martinez, H. Prosper, C. Schiber, R. Yohay, J. Zhang, M. M. Baarmand, S. Butalla, T. Elkafrawy, M. Hohlmann, D. Noonan, M. Rahmani, M. Saunders, F. Yumiceva, M. R. Adams, L. Apanasevich, H. Becerril Gonzalez, R. Cavanaugh, X. Chen, S. Dittmer, O. Evdokimov, C. E. Gerber, D. A. Hangal, D. J. Hofman, C. Mills, G. Oh, T. Roy, M. B. Tonjes, N. Varelas, J. Viinikainen, X. Wang, Z. Wu, Z. Ye, M. Alhusseini, K. Dilsiz, S. Durgut, R. P. Gandrajula, M. Haytmyradov, V. Khristenko, O. K. Köseyan, J.-P. Merlo, A. Mestvirishvili, A. Moeller, J. Nachtman, H. Ogul, Y. Onel, F. Ozok, A. Penzo, C. Snyder, E. Tiras, J. Wetzel, O. Amram, B. Blumenfeld, L. Corcodilos, M. Eminizer, A. V. Gritsan, S. Kyriacou, P. Maksimovic, C. Mantilla, J. Roskes, M. Swartz, T. Á. Vámi, C. Baldenegro Barrera, P. Baringer, A. Bean, A. Bylinkin, T. Isidori, S. Khalil, J. King, G. Krintiras, A. Kropivnitskaya, C. Lindsey, N. Minafra, M. Murray, C. Rogan, C. Royon, S. Sanders, E. Schmitz, J. D. Tapia Takaki, J. Williams, G. Wilson, S. Duric, A. Ivanov, K. Kaadze, D. Kim, Y. Maravin, T. Mitchell, A. Modak, A. Mohammadi, F. Rebassoo, D. Wright, E. Adams, A. Baden, O. Baron, A. Belloni, S. C. Eno, Y. Feng, N. J. Hadley, S. Jabeen, G. Y. Jeng, R. G. Kellogg, T. Koeth, A. C. Mignerey, S. Nabili, M. Seidel, A. Skuja, S. C. Tonwar, L. Wang, K. Wong, D. Abercrombie, B. Allen, R. Bi, S. Brandt, W. Busza, I. A. Cali, M. D’Alfonso, G. Gomez Ceballos, M. Goncharov, P. Harris, D. Hsu, M. Hu, M. Klute, D. Kovalskyi, J. Krupa, Y.-J. Lee, P. D. Luckey, B. Maier, A. C. Marini, C. Mcginn, C. Mironov, S. Narayanan, X. Niu, C. Paus, D. Rankin, C. Roland, G. Roland, Z. Shi, G. S. F. Stephans, K. Sumorok, K. Tatar, D. Velicanu, T. W. Wang, Z. Wang, B. Wyslouch, R. M. Chatterjee, A. Evans, P. Hansen, J. Hiltbrand, Sh. Jain, M. Krohn, Y. Kubota, Z. Lesko, J. Mans, M. Revering, R. Rusack, R. Saradhy, N. Schroeder, N. Strobbe, M. A. Wadud, J. G. Acosta, S. Oliveros, K. Bloom, D. R. Claes, C. Fangmeier, L. Finco, F. Golf, J. R. González Fernández, C. Joo, I. Kravchenko, J. E. Siado, G. R. Snow, W. Tabb, F. Yan, G. Agarwal, H. Bandyopadhyay, C. Harrington, L. Hay, I. Iashvili, A. Kharchilava, C. McLean, D. Nguyen, J. Pekkanen, S. Rappoccio, B. Roozbahani, G. Alverson, E. Barberis, C. Freer, Y. Haddad, A. Hortiangtham, J. Li, G. Madigan, B. Marzocchi, D. M. Morse, V. Nguyen, T. Orimoto, A. Parker, L. Skinnari, A. Tishelman-Charny, T. Wamorkar, B. Wang, A. Wisecarver, D. Wood, J. Bueghly, Z. Chen, A. Gilbert, T. Gunter, K. A. Hahn, N. Odell, M. H. Schmitt, K. Sung, M. Velasco, R. Bucci, N. Dev, R. Goldouzian, M. Hildreth, K. Hurtado Anampa, C. Jessop, D. J. Karmgard, K. Lannon, N. Loukas, N. Marinelli, I. Mcalister, F. Meng, K. Mohrman, Y. Musienko, R. Ruchti, P. Siddireddy, S. Taroni, M. Wayne, A. Wightman, M. Wolf, L. Zygala, J. Alimena, B. Bylsma, B. Cardwell, L. S. Durkin, B. Francis, C. Hill, A. Lefeld, B. L. Winer, B. R. Yates, B. Bonham, P. Das, G. Dezoort, P. Elmer, B. Greenberg, N. Haubrich, S. Higginbotham, A. Kalogeropoulos, G. Kopp, S. Kwan, D. Lange, M. T. Lucchini, J. Luo, D. Marlow, K. Mei, I. Ojalvo, J. Olsen, C. Palmer, P. Piroué, D. Stickland, C. Tully, S. Norberg, V. E. Barnes, R. Chawla, S. Das, L. Gutay, M. Jones, A. W. Jung, G. Negro, N. Neumeister, C. C. Peng, S. Piperov, A. Purohit, H. Qiu, J. F. Schulte, M. Stojanovic, N. Trevisani, F. Wang, A. Wildridge, R. Xiao, W. Xie, J. Dolen, N. Parashar, A. Baty, S. Dildick, K. M. Ecklund, S. Freed, F. J. M. Geurts, M. Kilpatrick, W. Li, B. P. Padley, R. Redjimi, J. Roberts, J. Rorie, W. Shi, A. G. Stahl Leiton, A. Bodek, P. de Barbaro, R. Demina, J. L. Dulemba, C. Fallon, T. Ferbel, M. Galanti, A. Garcia-Bellido, O. Hindrichs, A. Khukhunaishvili, E. Ranken, R. Taus, B. Chiarito, J. P. Chou, A. Gandrakota, Y. Gershtein, E. Halkiadakis, A. Hart, M. Heindl, E. Hughes, S. Kaplan, O. Karacheban, I. Laflotte, A. Lath, R. Montalvo, K. Nash, M. Osherson, S. Salur, S. Schnetzer, S. Somalwar, R. Stone, S. A. Thayil, S. Thomas, H. Acharya, A. G. Delannoy, S. Spanier, O. Bouhali, M. Dalchenko, A. Delgado, R. Eusebi, J. Gilmore, T. Huang, T. Kamon, S. Luo, S. Malhotra, R. Mueller, D. Overton, L. Perniè, D. Rathjens, A. Safonov, N. Akchurin, J. Damgov, V. Hegde, S. Kunori, K. Lamichhane, T. Mengke, S. Muthumuni, T. Peltola, S. Undleeb, I. Volobouev, A. Whitbeck, E. Appelt, S. Greene, A. Gurrola, R. Janjam, W. Johns, C. Maguire, A. Melo, H. Ni, K. Padeken, F. Romeo, P. Sheldon, S. Tuo, J. Velkovska, M. W. Arenton, B. Cox, G. Cummings, J. Hakala, R. Hirosky, M. Joyce, A. Ledovskoy, A. Li, C. Neu, B. Tannenwald, E. Wolfe, F. Xia, P. E. Karchin, N. Poudyal, P. Thapa, K. Black, T. Bose, J. Buchanan, C. Caillol, S. Dasu, I. De Bruyn, P. Everaerts, C. Galloni, H. He, M. Herndon, A. Hervé, U. Hussain, A. Lanaro, A. Loeliger, R. Loveless, J. Madhusudanan Sreekala, A. Mallampalli, D. Pinna, A. Savin, V. Shang, W. H. Smith, D. Teague, S. Trembath-reichert, W. Vetens, and CMS Collaboration
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Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract A search is presented for a heavy vector resonance decaying into a $${\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}$$ Z boson and the standard model Higgs boson, where the $${\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}$$ Z boson is identified through its leptonic decays to electrons, muons, or neutrinos, and the Higgs boson is identified through its hadronic decays. The search is performed in a Lorentz-boosted regime and is based on data collected from 2016 to 2018 at the CERN LHC, corresponding to an integrated luminosity of 137 $$\,\text {fb}^{-1}$$ fb - 1 . Upper limits are derived on the production of a narrow heavy resonance $${\mathrm{{{\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}}}}_{\mathrm{}}^{\mathrm{\prime }}$$ Z ′ , and a mass below 3.5 and 3.7 $$\,\text {Te}\text {V}$$ Te is excluded at 95% confidence level in models where the heavy vector boson couples predominantly to fermions and to bosons, respectively. These are the most stringent limits placed on the Heavy Vector Triplet $${\mathrm{{{\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}}}}_{\mathrm{}}^{\mathrm{\prime }}$$ Z ′ model to date. If the heavy vector boson couples exclusively to standard model bosons, upper limits on the product of the cross section and branching fraction are set between 23 and 0.3 $$\,\text {fb}$$ fb for a $${\mathrm{{{\mathrm{Z}}_{\mathrm{}}^{\mathrm{}}}}}_{\mathrm{}}^{\mathrm{\prime }}$$ Z ′ mass between 0.8 and 4.6 $$\,\text {Te}\text {V}$$ Te , respectively. This is the first limit set on a heavy vector boson coupling exclusively to standard model bosons in its production and decay.
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- 2021
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6. On the transition form factors of the axial-vector resonance f 1(1285) and its decay into e + e −
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Marvin Zanke, Martin Hoferichter, and Bastian Kubis
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Chiral Lagrangians ,Effective Field Theories ,Nonperturbative Effects ,Precision QED ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract Estimating the contribution from axial-vector intermediate states to hadronic light-by-light scattering requires input on their transition form factors (TFFs). Due to the Landau–Yang theorem, any experiment sensitive to these TFFs needs to involve at least one virtual photon, which complicates their measurement. Phenomenologically, the situation is best for the f 1(1285) resonance, for which information is available from e + e − → e + e − f 1, f 1 → 4π, f 1 → ργ, f 1 → ϕγ, and f 1 → e + e − . We provide a comprehensive analysis of the f 1 TFFs in the framework of vector meson dominance, including short-distance constraints, to determine to which extent the three independent TFFs can be constrained from the available experimental input — a prerequisite for improved calculations of the axial-vector contribution to hadronic light-by-light scattering. In particular, we focus on the process f 1 → e + e − , evidence for which has been reported recently by SND for the first time, and discuss the impact that future improved measurements will have on the determination of the f 1 TFFs.
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- 2021
- Full Text
- View/download PDF
7. Search for a heavy vector resonance decaying to a Zs=13Te boson and a Higgs boson in proton-proton collisions at Zs=13Te
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Sirunyan, A. M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., Valle, A. Escalante Del, Frühwirth, R., Jeitler, M., Krammer, N., Lechner, L., Liko, D., Mikulec, I., Pitters, F. M., Rad, N., Schieck, J., Schöfbeck, R., Spanring, M., Templ, S., Waltenberger, W., Wulz, C.-E., Zarucki, M., Chekhovsky, V., Litomin, A., Makarenko, V., Gonzalez, J. Suarez, Darwish, M. R., De Wolf, E. A., Di Croce, D., Janssen, X., Kello, T., Lelek, A., Pieters, M., Sfar, H. Rejeb, Van Haevermaet, H., Van Mechelen, P., Van Putte, S., Van Remortel, N., Blekman, F., Bols, E. S., Chhibra, S. S., D’Hondt, J., De Clercq, J., Lontkovskyi, D., Lowette, S., Marchesini, I., Moortgat, S., Morton, A., Müller, D., Python, Q., Tavernier, S., Van Doninck, W., Van Mulders, P., Beghin, D., Bilin, B., Clerbaux, B., De Lentdecker, G., Dorney, B., Favart, L., Grebenyuk, A., Kalsi, A. K., Makarenko, I., Moureaux, L., Pétré, L., Popov, A., Postiau, N., Starling, E., Thomas, L., Vander Velde, C., Vanlaer, P., Vannerom, D., Wezenbeek, L., Cornelis, T., Dobur, D., Gruchala, M., Khvastunov, I., Niedziela, M., Roskas, C., Skovpen, K., Tytgat, M., Verbeke, W., Vermassen, B., Vit, M., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Delcourt, M., Donertas, I. S., Giammanco, A., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Teklishyn, M., Vischia, P., Wertz, S., Wuyckens, S., Alves, G. A., Hensel, C., Moraes, A., Júnior, W. L. Aldá, Chagas, E. Belchior Batista Das, Malbouisson, H. Brandao, Carvalho, W., Chinellato, J., Coelho, E., Da Costa, E. M., Da Silveira, G. G., De Jesus Damiao, D., De Souza, S. Fonseca, Martins, J., Figueiredo, D. Matos, Jaime, M. Medina, Herrera, C. Mora, Mundim, L., Nogima, H., Teles, P. Rebello, Rosas, L. J. Sanchez, Santoro, A., Do Amaral, S. M. Silva, Sznajder, A., Thiel, M., Da Silva De Araujo, F. Torres, Pereira, A. Vilela, Bernardes, C. A., Calligaris, L., Tomei, T. R. Fernandez Perez, Gregores, E. M., Lemos, D. S., Mercadante, P. G., Novaes, S. F., Padula, Sandra S., Aleksandrov, A., Antchev, G., Atanasov, I., Hadjiiska, R., Iaydjiev, P., Misheva, M., Rodozov, M., Shopova, M., Sultanov, G., Dimitrov, A., Ivanov, T., Litov, L., Pavlov, B., Petkov, P., Petrov, A., Cheng, T., Fang, W., Guo, Q., Wang, H., Yuan, L., Ahmad, M., Bauer, G., Hu, Z., Wang, Y., Yi, K., Chapon, E., Chen, G. M., Chen, H. S., Chen, M., Javaid, T., Kapoor, A., Leggat, D., Liao, H., Liu, Z.-A., Sharma, R., Spiezia, A., Tao, J., Thomas-wilsker, J., Wang, J., Zhang, H., Zhang, S., Zhao, J., Agapitos, A., Ban, Y., Chen, C., Huang, Q., Levin, A., Li, Q., Lu, M., Lyu, X., Mao, Y., Qian, S. J., Wang, D., Wang, Q., Xiao, J., You, Z., Gao, X., Xiao, M., Avila, C., Cabrera, A., Florez, C., Fraga, J., Sarkar, A., Delgado, M. A. Segura, Jaramillo, J., Guisao, J. Mejia, Ramirez, F., Alvarez, J. D. Ruiz, González, C. A. Salazar, Arbelaez, N. Vanegas, Giljanovic, D., Godinovic, N., Lelas, D., Puljak, I., Antunovic, Z., Kovac, M., Sculac, T., Brigljevic, V., Ferencek, D., Majumder, D., Roguljic, M., Starodumov, A., Susa, T., Ather, M. W., Attikis, A., Erodotou, E., Ioannou, A., Kole, G., Kolosova, M., Konstantinou, S., Mousa, J., Nicolaou, C., Ptochos, F., Razis, P. A., Rykaczewski, H., Saka, H., Tsiakkouri, D., Finger, M., Finger, Jr., M., Kveton, A., Tomsa, J., Ayala, E., Jarrin, E. Carrera, Zeid, S. Abu, Assran, Y., Salama, E., Lotfy, A., Mahmoud, M. A., Bhowmik, S., De Oliveira, A. Carvalho Antunes, Dewanjee, R. K., Ehataht, K., Kadastik, M., Raidal, M., Veelken, C., Eerola, P., Forthomme, L., Kirschenmann, H., Osterberg, K., Voutilainen, M., Brücken, E., Garcia, F., Havukainen, J., Karimäki, V., Kim, M. S., Kinnunen, R., Lampén, T., Lassila-Perini, K., Lehti, S., Lindén, T., Siikonen, H., Tuominen, E., Tuominiemi, J., Luukka, P., Tuuva, T., Amendola, C., Besancon, M., Couderc, F., Dejardin, M., Denegri, D., Faure, J. L., Ferri, F., Ganjour, S., Givernaud, A., Gras, P., de Monchenault, G. Hamel, Jarry, P., Lenzi, B., Locci, E., Malcles, J., Rander, J., Rosowsky, A., Sahin, M.Ö., Savoy-Navarro, A., Titov, M., Yu, G. B., Ahuja, S., Beaudette, F., Bonanomi, M., Perraguin, A. Buchot, Busson, P., Charlot, C., Davignon, O., Diab, B., Falmagne, G., de Cassagnac, R. Granier, Hakimi, A., Kucher, I., Lobanov, A., Perez, C. Martin, Nguyen, M., Ochando, C., Paganini, P., Rembser, J., Salerno, R., Sauvan, J. B., Sirois, Y., Zabi, A., Zghiche, A., Agram, J.-L., Andrea, J., Bloch, D., Bourgatte, G., Brom, J.-M., Chabert, E. C., Collard, C., Fontaine, J.-C., Gelé, D., Goerlach, U., Grimault, C., Bihan, A.-C. Le, Van Hove, P., Asilar, E., Beauceron, S., Bernet, C., Boudoul, G., Camen, C., Carle, A., Chanon, N., Contardo, D., Depasse, P., El Mamouni, H., Fay, J., Gascon, S., Gouzevitch, M., Ille, B., Jain, Sa., Laktineh, I. B., Lattaud, H., Lesauvage, A., Lethuillier, M., Mirabito, L., Shchablo, K., Torterotot, L., Touquet, G., Vander Donckt, M., Viret, S., Adamov, G., Tsamalaidze, Z., Feld, L., Klein, K., Lipinski, M., Meuser, D., Pauls, A., Preuten, M., Rauch, M. P., Schulz, J., Teroerde, M., Eliseev, D., Erdmann, M., Fackeldey, P., Fischer, B., Ghosh, S., Hebbeker, T., Hoepfner, K., Keller, H., Mastrolorenzo, L., Merschmeyer, M., Meyer, A., Mocellin, G., Mondal, S., Mukherjee, S., Noll, D., Novak, A., Pook, T., Pozdnyakov, A., Rath, Y., Reithler, H., Roemer, J., Schmidt, A., Schuler, S. C., Sharma, A., Wiedenbeck, S., Zaleski, S., Dziwok, C., Flügge, G., Ahmad, W. Haj, Hlushchenko, O., Kress, T., Nowack, A., Pistone, C., Pooth, O., Roy, D., Sert, H., Stahl, A., Ziemons, T., Petersen, H. Aarup, Martin, M. Aldaya, Asmuss, P., Babounikau, I., Baxter, S., Behnke, O., Martínez, A. Bermúdez, Anuar, A. A. Bin, Borras, K., Botta, V., Brunner, D., Campbell, A., Cardini, A., Connor, P., Rodríguez, S. Consuegra, Danilov, V., De Wit, A., Defranchis, M. M., Didukh, L., Damiani, D. Domínguez, Eckerlin, G., Eckstein, D., Eichhorn, T., Banos, L. I. Estevez, Gallo, E., Geiser, A., Giraldi, A., Grohsjean, A., Guthoff, M., Harb, A., Jafari, A., Jomhari, N. Z., Jung, H., Kasem, A., Kasemann, M., Kaveh, H., Kleinwort, C., Knolle, J., Krücker, D., Lange, W., Lenz, T., Lidrych, J., Lipka, K., Lohmann, W., Madlener, T., Mankel, R., Melzer-Pellmann, I.-A., Metwally, J., Meyer, A. B., Meyer, M., Missiroli, M., Mnich, J., Mussgiller, A., Myronenko, V., Otarid, Y., Adán, D. Pérez, Pflitsch, S. K., Pitzl, D., Raspereza, A., Saggio, A., Saibel, A., Savitskyi, M., Scheurer, V., Schwanenberger, C., Singh, A., Ricardo, R. E. Sosa, Tonon, N., Turkot, O., Vagnerini, A., Van De Klundert, M., Walsh, R., Walter, D., Wen, Y., Wichmann, K., Wissing, C., Wuchterl, S., Zenaiev, O., Zlebcik, R., Aggleton, R., Bein, S., Benato, L., Benecke, A., De Leo, K., Dreyer, T., Ebrahimi, A., Eich, M., Feindt, F., Fröhlich, A., Garbers, C., Garutti, E., Gunnellini, P., Haller, J., Hinzmann, A., Karavdina, A., Kasieczka, G., Klanner, R., Kogler, R., Kutzner, V., Lange, J., Lange, T., Malara, A., Niemeyer, C. E. N., Nigamova, A., Rodriguez, K. J. Pena, Rieger, O., Schleper, P., Schumann, S., Schwandt, J., Schwarz, D., Sonneveld, J., Stadie, H., Steinbrück, G., Vormwald, B., Zoi, I., Bechtel, J., Berger, T., Butz, E., Caspart, R., Chwalek, T., De Boer, W., Dierlamm, A., Droll, A., El Morabit, K., Faltermann, N., Flöh, K., Giffels, M., Gottmann, A., Hartmann, F., Heidecker, C., Husemann, U., Katkov, I., Keicher, P., Koppenhöfer, R., Maier, S., Metzler, M., Mitra, S., Müller, Th., Musich, M., Quast, G., Rabbertz, K., Rauser, J., Savoiu, D., Schäfer, D., Schnepf, M., Schröder, M., Seith, D., Shvetsov, I., Simonis, H. J., Ulrich, R., Wassmer, M., Weber, M., Wolf, R., Wozniewski, S., Anagnostou, G., Asenov, P., Daskalakis, G., Geralis, T., Kyriakis, A., Loukas, D., Paspalaki, G., Stakia, A., Diamantopoulou, M., Karasavvas, D., Karathanasis, G., Kontaxakis, P., Koraka, C. K., Manousakis-katsikakis, A., Panagiotou, A., Papavergou, I., Saoulidou, N., Theofilatos, K., Tziaferi, E., Vellidis, K., Vourliotis, E., Bakas, G., Kousouris, K., Papakrivopoulos, I., Tsipolitis, G., Zacharopoulou, A., Evangelou, I., Foudas, C., Gianneios, P., Katsoulis, P., Kokkas, P., Manitara, K., Manthos, N., Papadopoulos, I., Strologas, J., Bartók, M., Csanad, M., Gadallah, M. M. A., Lökös, S., Major, P., Mandal, K., Mehta, A., Pasztor, G., Surányi, O., Veres, G. I., Bencze, G., Hajdu, C., Horvath, D., Sikler, F., Veszpremi, V., Vesztergombi, G., Czellar, S., Karancsi, J., Molnar, J., Szillasi, Z., Teyssier, D., Raics, P., Trocsanyi, Z. L., Ujvari, B., Csorgo, T., Nemes, F., Novak, T., Choudhury, S., Komaragiri, J. R., Kumar, D., Panwar, L., Tiwari, P. C., Bahinipati, S., Dash, D., Kar, C., Mal, P., Mishra, T., Bindhu, V. K. Muraleedharan Nair, Nayak, A., Sahoo, D. K., Sur, N., Swain, S. K., Bansal, S., Beri, S. B., Bhatnagar, V., Chaudhary, G., Chauhan, S., Dhingra, N., Gupta, R., Kaur, A., Kaur, S., Kumari, P., Meena, M., Sandeep, K., Sharma, S., Singh, J. B., Virdi, A. K., Ahmed, A., Bhardwaj, A., Choudhary, B. C., Garg, R. B., Gola, M., Keshri, S., Kumar, A., Naimuddin, M., Priyanka, P., Ranjan, K., Shah, A., Bharti, M., Bhattacharya, R., Bhattacharya, S., Bhowmik, D., Dutta, S., Ghosh, S., Gomber, B., Maity, M., Nandan, S., Palit, P., Rout, P. K., Saha, G., Sahu, B., Sarkar, S., Sharan, M., Singh, B., Thakur, S., Behera, P. K., Behera, S. C., Kalbhor, P., Muhammad, A., Pradhan, R., Pujahari, P. R., Sharma, A., Sikdar, A. K., Dutta, D., Kumar, V., Naskar, K., Netrakanti, P. K., Pant, L. M., Shukla, P., Aziz, T., Bhat, M. A., Dugad, S., Verma, R. Kumar, Mohanty, G. B., Sarkar, U., Banerjee, S., Bhattacharya, S., Chatterjee, S., Chudasama, R., Guchait, M., Karmakar, S., Kumar, S., Majumder, G., Mazumdar, K., Mukherjee, S., Roy, D., Dube, S., Kansal, B., Pandey, S., Rane, A., Rastogi, A., Sharma, S., Bakhshiansohi, H., Zeinali, M., Chenarani, S., Etesami, S. M., Khakzad, M., Najafabadi, M. Mohammadi, Felcini, M., Grunewald, M., Abbrescia, M., Aly, R., Aruta, C., Colaleo, A., Creanza, D., De Filippis, N., De Palma, M., Di Florio, A., Di Pilato, A., Elmetenawee, W., Fiore, L., Gelmi, A., Gul, M., Iaselli, G., Ince, M., Lezki, S., Maggi, G., Maggi, M., Margjeka, I., Mastrapasqua, V., Merlin, J. A., My, S., Nuzzo, S., Pompili, A., Pugliese, G., Ranieri, A., Selvaggi, G., Silvestris, L., Simone, F. M., Venditti, R., Verwilligen, P., Abbiendi, G., Battilana, C., Bonacorsi, D., Borgonovi, L., Braibant-Giacomelli, S., Campanini, R., Capiluppi, P., Castro, A., Cavallo, F. R., Ciocca, C., Cuffiani, M., Dallavalle, G. M., Diotalevi, T., Fabbri, F., Fanfani, A., Fontanesi, E., Giacomelli, P., Giommi, L., Grandi, C., Guiducci, L., Iemmi, F., Meo, S. Lo, Marcellini, S., Masetti, G., Navarria, F. L., Perrotta, A., Primavera, F., Rossi, A. M., Rovelli, T., Siroli, G. P., Tosi, N., Albergo, S., Costa, S., Di Mattia, A., Potenza, R., Tricomi, A., Tuve, C., Barbagli, G., Cassese, A., Ceccarelli, R., Ciulli, V., Civinini, C., D’Alessandro, R., Fiori, F., Focardi, E., Latino, G., Lenzi, P., Lizzo, M., Meschini, M., Paoletti, S., Seidita, R., Sguazzoni, G., Viliani, L., Benussi, L., Bianco, S., Piccolo, D., Bozzo, M., Ferro, F., Mulargia, R., Robutti, E., Tosi, S., Benaglia, A., Beschi, A., Brivio, F., Cetorelli, F., Ciriolo, V., De Guio, F., Dinardo, M. E., Dini, P., Gennai, S., Ghezzi, A., Govoni, P., Guzzi, L., Malberti, M., Malvezzi, S., Massironi, A., Menasce, D., Monti, F., Moroni, L., Paganoni, M., Pedrini, D., Ragazzi, S., de Fatis, T. Tabarelli, Valsecchi, D., Zuolo, D., Buontempo, S., Cavallo, N., De Iorio, A., Fabozzi, F., Fienga, F., Iorio, A. O. M., Lista, L., Meola, S., Paolucci, P., Rossi, B., Sciacca, C., Voevodina, E., Azzi, P., Bacchetta, N., Bisello, D., Bortignon, P., Bragagnolo, A., Carlin, R., Checchia, P., De Castro Manzano, P., Dorigo, T., Gasparini, F., Gasparini, U., Hoh, S. Y., Layer, L., Margoni, M., Meneguzzo, A. T., Presilla, M., Ronchese, P., Rossin, R., Simonetto, F., Strong, G., Tosi, M., YARAR, H., Zanetti, M., Zotto, P., Zucchetta, A., Zumerle, G., Aime‘, C., Braghieri, A., Calzaferri, S., Fiorina, D., Montagna, P., Ratti, S. P., Re, V., Ressegotti, M., Riccardi, C., Salvini, P., Vai, I., Vitulo, P., Biasini, M., Bilei, G. M., Ciangottini, D., Fanò, L., Lariccia, P., Mantovani, G., Mariani, V., Menichelli, M., Moscatelli, F., Piccinelli, A., Rossi, A., Santocchia, A., Spiga, D., Tedeschi, T., Androsov, K., Azzurri, P., Bagliesi, G., Bertacchi, V., Bianchini, L., Boccali, T., Castaldi, R., Ciocci, M. A., Dell’Orso, R., Di Domenico, M. R., Donato, S., Giannini, L., Giassi, A., Grippo, M. T., Ligabue, F., Manca, E., Mandorli, G., Messineo, A., Palla, F., Ramirez-Sanchez, G., Rizzi, A., Rolandi, G., Chowdhury, S. Roy, Scribano, A., Shafiei, N., Spagnolo, P., Tenchini, R., Tonelli, G., Turini, N., Venturi, A., Verdini, P. G., Cavallari, F., Cipriani, M., Re, D. Del, Di Marco, E., Diemoz, M., Longo, E., Meridiani, P., Organtini, G., Pandolfi, F., Paramatti, R., Quaranta, C., Rahatlou, S., Rovelli, C., Santanastasio, F., Soffi, L., Tramontano, R., Amapane, N., Arcidiacono, R., Argiro, S., Arneodo, M., Bartosik, N., Bellan, R., Bellora, A., Antequera, J. Berenguer, Biino, C., Cappati, A., Cartiglia, N., Cometti, S., Costa, M., Covarelli, R., Demaria, N., Kiani, B., Legger, F., Mariotti, C., Maselli, S., Migliore, E., Monaco, V., Monteil, E., Monteno, M., Obertino, M. M., Ortona, G., Pacher, L., Pastrone, N., Pelliccioni, M., Angioni, G. L. Pinna, Ruspa, M., Salvatico, R., Siviero, F., Sola, V., Solano, A., Soldi, D., Staiano, A., Tornago, M., Trocino, D., Belforte, S., Candelise, V., Casarsa, M., Cossutti, F., Da Rold, A., Ricca, G. Della, Vazzoler, F., Dogra, S., Huh, C., Kim, B., Kim, D. H., Kim, G. N., Lee, J., Lee, S. W., Moon, C. S., Oh, Y. D., Pak, S. I., Radburn-Smith, B. C., Sekmen, S., Yang, Y. C., Kim, H., Moon, D. H., Francois, B., Kim, T. J., Park, J., Cho, S., Choi, S., Go, Y., Ha, S., Hong, B., Lee, K., Lee, K. S., Lim, J., Park, J., Park, S. K., Yoo, J., Goh, J., Gurtu, A., Kim, H. S., Kim, Y., Almond, J., Bhyun, J. H., Choi, J., Jeon, S., Kim, J., Kim, J. S., Ko, S., Kwon, H., Lee, H., Lee, K., Lee, S., Nam, K., Oh, B. H., Oh, M., Oh, S. B., Seo, H., Yang, U. K., Yoon, I., Jeon, D., Kim, J. H., Ko, B., Lee, J. S. H., Park, I. C., Roh, Y., Song, D., Watson, I. J., Yoo, H. D., Choi, Y., Hwang, C., Jeong, Y., Lee, H., Lee, Y., Yu, I., Maghrbi, Y., Veckalns, V., Juodagalvis, A., Rinkevicius, A., Tamulaitis, G., Vaitkevicius, A., Abdullah, W. A. T. Wan, Yusli, M. N., Zolkapli, Z., Benitez, J. F., Hernandez, A. Castaneda, Quijada, J. A. Murillo, Palomo, L. Valencia, Ayala, G., Castilla-Valdez, H., De La Cruz-Burelo, E., La Cruz, I. Heredia-De, Lopez-Fernandez, R., Herrera, C. A. Mondragon, Navarro, D. A. Perez, Sanchez-Hernandez, A., Moreno, S. Carrillo, Barrera, C. Oropeza, Ramirez-Garcia, M., Valencia, F. Vazquez, Eysermans, J., Pedraza, I., Ibarguen, H. A. Salazar, Estrada, C. Uribe, Pineda, A. Morelos, Mijuskovic, J., Raicevic, N., Krofcheck, D., Bheesette, S., Butler, P. H., Ahmad, A., Asghar, M. I., Awais, A., Awan, M. I. M., Hoorani, H. R., Khan, W. A., Shah, M. A., Shoaib, M., Waqas, M., Avati, V., Grzanka, L., Malawski, M., Bialkowska, H., Bluj, M., Boimska, B., Frueboes, T., Górski, M., Kazana, M., Szleper, M., Traczyk, P., Zalewski, P., Bunkowski, K., Doroba, K., Kalinowski, A., Konecki, M., Krolikowski, J., Walczak, M., Araujo, M., Bargassa, P., Bastos, D., Boletti, A., Faccioli, P., Gallinaro, M., Hollar, J., Leonardo, N., Niknejad, T., Seixas, J., Shchelina, K., Toldaiev, O., Varela, J., Afanasiev, S., Bunin, P., Gavrilenko, M., Golutvin, I., Kamenev, A., Karjavine, V., Kashunin, I., Korenkov, V., Lanev, A., Malakhov, A., Matveev, V., Mitsyn, V. V., Palichik, V., Perelygin, V., Savina, M., Shalaev, V., Shmatov, S., Shulha, S., Smirnov, V., Teryaev, O., Trofimov, V., Zarubin, A., Gavrilov, G., Golovtcov, V., Ivanov, Y., Kim, V., Kuznetsova, E., Murzin, V., Oreshkin, V., Smirnov, I., Sosnov, D., Sulimov, V., Uvarov, L., Volkov, S., Vorobyev, A., Andreev, Yu., Dermenev, A., Gninenko, S., Golubev, N., Karneyeu, A., Kirsanov, M., Krasnikov, N., Pashenkov, A., Pivovarov, G., Tlisov, D., Toropin, A., Epshteyn, V., Gavrilov, V., Lychkovskaya, N., Nikitenko, A., Popov, V., Safronov, G., Spiridonov, A., Stepennov, A., Toms, M., Vlasov, E., Zhokin, A., Aushev, T., Bychkova, O., Philippov, D., Popova, E., Rusinov, V., Zhemchugov, E., Andreev, V., Azarkin, M., Dremin, I., Kirakosyan, M., Terkulov, A., Belyaev, A., Boos, E., Bunichev, V., Dubinin, M., Dudko, L., Ershov, A., Klyukhin, V., Kodolova, O., Lokhtin, I., Obraztsov, S., Perfilov, M., Petrushanko, S., Savrin, V., Blinov, V., Dimova, T., Kardapoltsev, L., Ovtin, I., Skovpen, Y., Azhgirey, I., Bayshev, I., Kachanov, V., Kalinin, A., Konstantinov, D., Petrov, V., Ryutin, R., Sobol, A., Troshin, S., Tyurin, N., Uzunian, A., Volkov, A., Babaev, A., Iuzhakov, A., Okhotnikov, V., Sukhikh, L., Borchsh, V., Ivanchenko, V., Tcherniaev, E., Adzic, P., Cirkovic, P., Dordevic, M., Milenovic, P., Milosevic, J., Aguilar-Benitez, M., Maestre, J. 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P., Gandrakota, A., Gershtein, Y., Halkiadakis, E., Hart, A., Heindl, M., Hughes, E., Kaplan, S., Karacheban, O., Laflotte, I., Lath, A., Montalvo, R., Nash, K., Osherson, M., Salur, S., Schnetzer, S., Somalwar, S., Stone, R., Thayil, S. A., Thomas, S., Wang, H., Acharya, H., Delannoy, A. G., Spanier, S., Bouhali, O., Dalchenko, M., Delgado, A., Eusebi, R., Gilmore, J., Huang, T., Kamon, T., Kim, H., Luo, S., Malhotra, S., Mueller, R., Overton, D., Perniè, L., Rathjens, D., Safonov, A., Akchurin, N., Damgov, J., Hegde, V., Kunori, S., Lamichhane, K., Lee, S. W., Mengke, T., Muthumuni, S., Peltola, T., Undleeb, S., Volobouev, I., Wang, Z., Whitbeck, A., Appelt, E., Greene, S., Gurrola, A., Janjam, R., Johns, W., Maguire, C., Melo, A., Ni, H., Padeken, K., Romeo, F., Sheldon, P., Tuo, S., Velkovska, J., Arenton, M. W., Cox, B., Cummings, G., Hakala, J., Hirosky, R., Joyce, M., Ledovskoy, A., Li, A., Neu, C., Tannenwald, B., Wang, Y., Wolfe, E., Xia, F., Karchin, P. E., Poudyal, N., Thapa, P., Black, K., Bose, T., Buchanan, J., Caillol, C., Dasu, S., De Bruyn, I., Everaerts, P., Galloni, C., He, H., Herndon, M., Hervé, A., Hussain, U., Lanaro, A., Loeliger, A., Loveless, R., Sreekala, J. Madhusudanan, Mallampalli, A., Pinna, D., Savin, A., Shang, V., Sharma, V., Smith, W. H., Teague, D., Trembath-reichert, S., and Vetens, W.
- Published
- 2021
- Full Text
- View/download PDF
8. On the transition form factors of the axial-vector resonance f1(1285) and its decay into e+e−
- Author
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Zanke, Marvin, Hoferichter, Martin, and Kubis, Bastian
- Published
- 2021
- Full Text
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9. Modelling top partner-vector resonance phenomenology
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Juan Yepes and Alfonso Zerwekh
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
We have analysed the observable consequences of the interactions of spin-1 resonances coupled to the invariant fermionic currents that arise in an SO(5) Composite Higgs set-up. The phenomenology entailed by such interactions is thoroughly analysed by studying heavy vector resonances production and decay modes in the viable resonance mass range. Additionally, the production of double and single-composite fermion final states has been scanned along the fermion mass scale. Such production is mediated by the SM gauge and Higgs interactions, and also by charged and neutral vector resonances. The coupling between the new fermions and vector resonances induces a sizeable effect in the production rates. We use the recent 13 TeV LHC searches for vector-like quarks to constrain our parameter space. Specifically, we explore the allowed regions by analysing the decays of a heavy vector-like quark in the Wb-channel. We conclude that generically the impact of the couplings between the spin-1 and spin-1/2 resonances will substantially reduce the permitted regions, leading us to test the sensitivity of the parametric dependence in the light of exotic matter interactions.
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- 2019
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10. LHC vector resonance searches in the t t ¯ Z final state
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Backović, Mihailo, Flacke, Thomas, Jain, Bithika, and Lee, Seung J.
- Published
- 2017
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11. Tricking Landau–Yang: How to obtain the diphoton excess from a vector resonance
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Mikael Chala, Michael Duerr, Felix Kahlhoefer, and Kai Schmidt-Hoberg
- Subjects
Physics ,QC1-999 - Abstract
We show that contrary to naive expectations the recently observed diphoton excess can be explained by a vector resonance, which decays to a photon and a light scalar s, followed by a decay of the scalar into two photons: Z′→γs→3γ. As the two photons from the scalar decay are highly boosted, the experimental signature is an apparent diphoton final state. In fact all the necessary ingredients are naturally present in Z′ models: Additional fermions with electroweak quantum numbers are required in order to render the theory anomaly free and naturally induce the required effective couplings, while the hidden Higgs which gives mass to the Z′ can be very light. In particular no new coloured states are required in this framework. We also show that in such a setup the width of the resonance can be rather large, while all couplings remain perturbative. Keywords: Mostly weak interactions: beyond standard model
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- 2016
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12. Hiding the Vector Resonance Signal Hiding the Vector Resonance Signal
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Mikulas Gintner and Josef Juran
- Subjects
electroweak symmetry breaking ,effective lagrangian ,vector resonances ,new strong interactions ,Transportation and communications ,HE1-9990 ,Science ,Transportation engineering ,TA1001-1280 - Abstract
We investigate how the interplay of the direct and mixing-induced couplings of the hypothetical SU(2)L+R vector triplet resonance to the third quark generation can hide the resonance signal in ,tb tb , and / bt tb channels. The vector resonances are assumed to represent bound states of hypothetical strongly-interacting new physics, the extension of the Standard model.
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- 2014
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13. The vector resonance triplet with the direct coupling to the third quark generation
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Gintner, Mikuláš and Juráň, Josef
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- 2013
- Full Text
- View/download PDF
14. Measurements of neutral vector resonance in Higgsless models at the LHC
- Author
-
Asano, Masaki and Shimizu, Yasuhiro
- Published
- 2011
- Full Text
- View/download PDF
15. Peak Locations and Relative Phase of Different Decay Modes of the Axial Vector Resonance in Diffractive Production
- Author
-
Berger, Edmond
- Published
- 2015
- Full Text
- View/download PDF
16. Two-photon production of vector resonance in e + e − collisions
- Author
-
Matvienko, D. V.
- Published
- 2009
- Full Text
- View/download PDF
17. On the transition form factors of the axial-vector resonance f1(1285) and its decay into e+e−.
- Author
-
Zanke, Marvin, Hoferichter, Martin, and Kubis, Bastian
- Subjects
- *
RESONANCE , *VECTOR mesons , *MESONS , *PHOTONS - Abstract
Estimating the contribution from axial-vector intermediate states to hadronic light-by-light scattering requires input on their transition form factors (TFFs). Due to the Landau–Yang theorem, any experiment sensitive to these TFFs needs to involve at least one virtual photon, which complicates their measurement. Phenomenologically, the situation is best for the f1(1285) resonance, for which information is available from e+e− → e+e−f1, f1 → 4π, f1 → ργ, f1 → ϕγ, and f1 → e+e−. We provide a comprehensive analysis of the f1 TFFs in the framework of vector meson dominance, including short-distance constraints, to determine to which extent the three independent TFFs can be constrained from the available experimental input — a prerequisite for improved calculations of the axial-vector contribution to hadronic light-by-light scattering. In particular, we focus on the process f1 → e+e−, evidence for which has been reported recently by SND for the first time, and discuss the impact that future improved measurements will have on the determination of the f1 TFFs. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
18. Axial-vector resonance in nuclear matter
- Author
-
Roca, L [Departamento de Fisica, Universidad de Murcia, E-30071 Murcia (Spain)]
- Published
- 2010
- Full Text
- View/download PDF
19. Two-photon production of vector resonance in e{sup +}e{sup -} collisions
- Published
- 2009
- Full Text
- View/download PDF
20. Precision spectroscopy with COMPASS and the observation of a new iso-vector resonance
- Author
-
Paul Stephan
- Subjects
Physics ,QC1-999 - Abstract
We report on the results of a novel partial-wave analysis based on 50 ⋅ 106 events from the reaction π− + p → π−π−π+ + precoil at 190 GeV/c incoming beam momentum using the COMPASS spectrometer. A separated analysis in bins of m3π and four-momentum transfer t′ reveals the interference of resonant and non-resonant particle production and allows their spectral separation. Besides well known resonances we observe a new iso-vector meson a1(1420) at a mass of 1420 MeV/c2 in the f0(980)π final state only, the origin of which is unclear. We have also examined the structure of the 0++ππ-isobar in the JPC = 0−+, 1++, 2−+ three pion waves. This clearly reveals the various 0++ππ-isobar components and its correlation to the decay of light mesons.
- Published
- 2014
- Full Text
- View/download PDF
21. THE LHC MASS LIMITS FOR THE SU(2)L+R VECTOR RESONANCE TRIPLET OF A STRONG EXTENSION OF THE STANDARD MODEL.
- Author
-
GINTNER, MIKULÁŠ and JURÁŇ, JOSEF
- Subjects
- *
LARGE Hadron Collider , *STANDARD model (Nuclear physics) , *NON-linear sigma model (Statistical physics) , *LAGRANGE equations , *FERMIONS - Abstract
In this paper, we derive the mass exclusion limits for the hypothetical vector resonances of a strongly interacting extension of the Standard Model using the most recent upper bounds on the cross sections for various resonance production processes. The SU(2)L+R triplet of the vector resonances under consideration is embedded into the effective Lagrangian based on the non-linear sigma model with the 125-GeV SU(2)L+R scalar singlet. No direct interactions of the vector resonance to the SM fermions are assumed. We find that among eleven processes considered in this paper, only those where the vector resonances decay to WW and WZ provide the mass exclusion limit. Depending on the values of other parameters of the model, the mass limit can be as low as 1 TeV. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
22. Tricking Landau–Yang: How to obtain the diphoton excess from a vector resonance.
- Author
-
Chala, Mikael, Duerr, Michael, Kahlhoefer, Felix, and Schmidt-Hoberg, Kai
- Subjects
- *
RADIOACTIVE decay , *QUANTUM numbers , *NUCLEAR physics , *HIGGS bosons , *QUANTUM states - Abstract
We show that contrary to naive expectations the recently observed diphoton excess can be explained by a vector resonance, which decays to a photon and a light scalar s , followed by a decay of the scalar into two photons: Z ′ → γ s → 3 γ . As the two photons from the scalar decay are highly boosted, the experimental signature is an apparent diphoton final state. In fact all the necessary ingredients are naturally present in Z ′ models: Additional fermions with electroweak quantum numbers are required in order to render the theory anomaly free and naturally induce the required effective couplings, while the hidden Higgs which gives mass to the Z ′ can be very light. In particular no new coloured states are required in this framework. We also show that in such a setup the width of the resonance can be rather large, while all couplings remain perturbative. [ABSTRACT FROM AUTHOR]
- Published
- 2016
- Full Text
- View/download PDF
23. COUPLED ANGULAR MOMENTUM CHANNELS AND AXIAL-VECTOR RESONANCE IN $pi$$omega$ SCATTERING.
- Author
-
Kang, K
- Published
- 1973
- Full Text
- View/download PDF
24. Radiative corrections to $$e^ + e^ - \to \mu ^ + \mu ^ - $$ near a narrow vector resonancenear a narrow vector resonance
- Author
-
Altarelli, G., Ellis, R. K., and Petronzio, R.
- Published
- 1975
- Full Text
- View/download PDF
25. An observation on vector-resonance production in multiparticle processes
- Author
-
Ingrosso, G. and Rotelli, P.
- Published
- 1975
- Full Text
- View/download PDF
26. Peak Locations and Relative Phase of Different Decay Modes of the a1 Axial Vector Resonance in Diffractive Production.
- Author
-
Basdevant, Jean-Louis and Berger, Edmond L.
- Subjects
- *
RESONANT states , *VECTOR analysis , *DIFFRACTIVE scattering , *COMPASS (Computer program language) , *AMPLITUDE estimation - Abstract
We show that a single I=1 spin-parity JPC=1++ a1 resonance can manifest itself as two separated mass peaks, one decaying into an S-wave ρπ system and the second decaying into a P-wave f0(980)π system, with a rapid increase of the phase difference between their amplitudes arising mainly from the structure of the diffractive production process. This study clarifies questions related to the mass, width, and decay rates of the a1 resonance raised by the recent high statistics data of the COMPASS Collaboration on a1 production in πN → πππN at high energies. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
27. On the transition form factors of the axial-vector resonance f1(1285) and its decay into e+e−.
- Author
-
Zanke, Marvin, Hoferichter, Martin, and Kubis, Bastian
- Subjects
RESONANCE ,VECTOR mesons ,MESONS ,PHOTONS - Abstract
Estimating the contribution from axial-vector intermediate states to hadronic light-by-light scattering requires input on their transition form factors (TFFs). Due to the Landau–Yang theorem, any experiment sensitive to these TFFs needs to involve at least one virtual photon, which complicates their measurement. Phenomenologically, the situation is best for the f
1 (1285) resonance, for which information is available from e+ e− → e+ e− f1 , f1 → 4π, f1 → ργ, f1 → ϕγ, and f1 → e+ e− . We provide a comprehensive analysis of the f1 TFFs in the framework of vector meson dominance, including short-distance constraints, to determine to which extent the three independent TFFs can be constrained from the available experimental input — a prerequisite for improved calculations of the axial-vector contribution to hadronic light-by-light scattering. In particular, we focus on the process f1 → e+ e− , evidence for which has been reported recently by SND for the first time, and discuss the impact that future improved measurements will have on the determination of the f1 TFFs. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
28. Combined analysis of and production for vector resonance searches at LHC
- Author
-
del Aguila, F., Aguilar-Saavedra, J.A., Moretti, M., Piccinini, F., Pittau, R., and Treccani, M.
- Subjects
- *
LARGE Hadron Collider , *VECTOR fields , *JETS (Nuclear physics) , *RADIATIVE corrections , *BOSONS , *GAUGE field theory , *NUCLEAR cross sections - Abstract
Abstract: We have implemented a code for jets production in ALPGEN, with decays into several final states, including and . The MLM prescription is used for matching the matrix element with the parton shower, including in this way the leading soft and collinear corrections. In order to demonstrate its capabilities, we perform a combined analysis of and production for a heavy leptophobic gauge boson. It is found that the effect of the extra jet cannot only be accounted for by a K factor multiplying the leading-order cross section. In fact, the combined analysis for and presented improves the statistical significance of the signal by 25% (8.55σ versus 6.77σ for a mass of 1 TeV), compared with the results of an inclusive analysis carried out on the same sample of events. [Copyright &y& Elsevier]
- Published
- 2010
- Full Text
- View/download PDF
29. Two-photon production of vector resonance in e+ e− collisions.
- Author
-
Matvienko, D. V.
- Subjects
- *
PHOTONS , *RESONANCE , *APPROXIMATION theory , *FUNCTIONAL analysis , *LIGHT - Abstract
A parameterization of the amplitude of the two-photon production of 1++ and 1−+ vector resonances V in the e+ e− → e+ e− V reaction has been obtained. The differential (in momentum transfer) scattering cross section dσ/ dQ2 has been found for this reaction in the equivalent-photon approximation. The result obtained is model-independent. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
30. Radiative corrections to e$sup +$e $Yields$ reverse arrow$sup ++$$mu$$sup - $ near a narrow vector resonance
- Author
-
Petronzio, R
- Published
- 1975
- Full Text
- View/download PDF
31. Observation on vector-resonance production in multiparticle processes
- Author
-
Rotelli, P
- Published
- 1975
- Full Text
- View/download PDF
32. CP-violating observables of four-body B(s)→(ππ)(KK¯) decays in perturbative QCD.
- Author
-
Yan, Da-Cheng, Yan, Yan, and Rui, Zhou
- Abstract
In this work, we investigate six helicity amplitudes of the four-body B (s) → (π π) (K K ¯) decays via an angular analysis in the perturbative QCD (PQCD) approach. The π π invariant mass spectrum is dominated by the vector resonance ρ (770) together with scalar resonance f 0 (980) , while the vector resonance ϕ (1020) and scalar resonance f 0 (980) are expected to contribute in the K K ¯ invariant mass range. We extract the two-body branching ratios B (B (s) → ρ ϕ) from the corresponding four-body decays B (s) → ρ ϕ → (π π) (K K ¯) based on the narrow width approximation. The predicted B (B s 0 → ρ ϕ) agrees well with the current experimental data within errors. The longitudinal polarization fractions of the B (s) → ρ ϕ decays are found to be as large as 90 % , basically consistent with the previous two-body predictions within uncertainties. In addition to the direct CP asymmetries, the triple-product asymmetries (TPAs) originating from the interference among various helicity amplitudes are also presented for the first time. Since the B s 0 → ρ 0 ϕ → (π + π -) (K + K -) decay is induced by both tree and penguin operators, the values of the A dir CP and A T-true 1 are calculated to be (21. 8 - 3.3 + 2.7) % and (- 10. 23 - 1.56 + 1.73) % respectively. While for pure penguin decays B 0 → ρ 0 ϕ → (π + π -) (K + K -) and B + → ρ + ϕ → (π + π 0) (K + K -) , both the direct CP asymmetries and “true” TPAs are naturally expected to be zero in the standard model (SM) due to the absence of the weak phase difference. The “fake” TPAs requiring no weak phase difference are usually none zero for all considered decay channels. The sizable “fake” A T-fake 1 = (- 20. 92 - 2.80 + 6.26) % of the B 0 → ρ 0 ϕ → (π + π -) (K + K -) decay is predicted in the PQCD approach, which provides valuable information on the final-state interactions. The above predictions can be tested by the future LHCb and Belle-II experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
33. Vector-Resonance-Multimode Instability.
- Author
-
Sergeyev, S. V., Kbashi, H., Tarasov, N., Loiko, Yu., and Kolpakov, S. A.
- Subjects
- *
RESONANCE , *DYNAMICS , *NONLINEAR systems - Abstract
The modulation and multimode instabilities are the main mechanisms which drive spontaneous spatial and temporal pattern formation in a vast number of nonlinear systems ranging from biology to laser physics. Using an Er-doped fiber laser as a test bed, here for the first time we demonstrate both experimentally and theoretically a new type of a low-threshold vector-resonance-multimode instability which inherits features of multimode and modulation instabilities. The same as for the multimode instability, a large number of longitudinal modes can be excited without mode synchronization. To enable modulation instability, we modulate the state of polarization of the lasing signal with the period of the beat length by an adjustment of the in-cavity birefringence and the state of polarization of the pump wave. As a result, we show the regime's tunability from complex oscillatory to periodic with longitudinal mode synchronization in the case of resonance matching between the beat and cavity lengths. Apart from the interest in laser physics for unlocking the tunability and stability of dynamic regimes, the proposed mechanism of the vector-resonance-multimode instability can be of fundamental interest for the nonlinear dynamics of various distributed systems. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
34. A dark vector resonance at CLIC.
- Author
-
Constanza Callender and Alfonso R. Zerwekh
- Published
- 2019
- Full Text
- View/download PDF
35. Anomalous effective lagrangians and vector resonance models
- Author
-
Pallante, E. and Petronzio, R.
- Published
- 1993
- Full Text
- View/download PDF
36. Effective weak interaction theory with a possible new vector resonance from a strong higgs sector
- Author
-
Casalbuoni, R., de Curtis, S., Dominici, D., and Gatto, R.
- Published
- 1985
- Full Text
- View/download PDF
37. Scattering of Goldstone bosons and resonance production in a composite Higgs model on the lattice.
- Author
-
Drach, Vincent, Janowski, Tadeusz, Pica, Claudio, and Prelovsek, Sasa
- Subjects
HIGGS bosons ,NAMBU-Goldstone bosons ,RESONANCE ,VECTOR mesons ,LATTICE field theory ,STANDARD model (Nuclear physics) ,PRODUCTION control - Abstract
We calculate the coupling between a vector resonance and two Goldstone bosons in SU(2) gauge theory with N
f = 2 Dirac fermions in the fundamental representation. The considered theory can be used to construct a minimal Composite Higgs models. The coupling is related to the width of the vector resonance and we determine it by simulating the scattering of two Goldstone bosons where the resonance is produced. The resulting coupling is gVPP = 7.8 ± 0.6, not far from gρππ ≃ 6 in QCD. This is the first lattice calculation of the resonance properties for a minimal UV completion. This coupling controls the production cross section of the lightest expected resonance at the LHC and enters into other tests of the Standard Model, from Vector Boson Fusion to electroweak precision tests. Our prediction is crucial to constrain the model using lattice input and for understanding the behavior of the vector meson production cross section as a function of the underlying gauge theory. We also extract the coupling g VPP KSRF = 9.4 ± 0.6 assuming the vector-dominance and find that this phenomenological estimate slightly overestimates the value of the coupling. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
38. Study of four-body decays B(s)→(ππ)(ππ) in the perturbative QCD approach.
- Author
-
Yan, Da-Cheng, Rui, Zhou, Yan, Yan, and Li, Ya
- Subjects
QUANTUM chromodynamics ,BRANCHING ratios ,MASS spectrometry ,CP violation ,RESONANCE - Abstract
In this work, we make a systematical study on the four-body B (s) → (π π) (π π) decays in the perturbative QCD (PQCD) approach, where the π π invariant mass spectra are dominated by the vector resonance ρ (770) and the scalar resonance f 0 (980) . We improve the Gengenbauer moments for the longitudinal P-wave two-pion distribution amplitudes (DAs) by fitting the PQCD factorization formulas to measured branching ratios of three-body and four-body B decays. With the fitted Gegenbauer moments, we make predictions for the branching ratios and direct CP asymmetries of four-body B (s) → (π π) (π π) decays. As a by-product, we extract the branching ratios of two-body B (s) → ρ ρ from the corresponding four-body decay modes and calculate the relevant polarization fractions. We find that the B (B 0 → ρ + ρ -) is consistent with the previous theoretical predictions and data. The leading-order PQCD calculations of the B (B + → ρ + ρ 0) , B (B 0 → ρ 0 ρ 0) and the f 0 (B 0 → ρ 0 ρ 0) are a bit lower than the experimental measurements, which should be further examined. It is shown that the direct CP asymmetries are large when both tree and penguin contributions are comparable to each other, but small for the tree-dominant or penguin-dominant processes. In addition to the direct CP asymmetries, the "true" and "fake" triple-product asymmetries (TPAs) originating from the interference among various helicity amplitudes in the B (s) → (π π) (π π) decays are also analyzed. The sizable averaged TPA A T-true 1 , ave = 25.26 % of the color-suppressed decay B 0 → ρ 0 ρ 0 → (π + π -) (π + π -) is predicted for the first time, which deviates a lot from the so-called "true" TPA A T-true 1 = 7.92 % due to the large direct CP violation. A large "fake" TPA A T-fake 1 = 24.96 % of the decay B 0 → ρ 0 ρ 0 → (π + π -) (π + π -) is also found, which indicates the significance of the final-state interactions. The predictions in this work can be tested by LHCb and Belle-II experiments in the near future. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
39. CP-violating observables of four-body $$B_{(s)} \rightarrow (\pi \pi )(K\bar{K})$$ B ( s ) → ( π π ) ( K K ¯ ) decays in perturbative QCD
- Author
-
Da-Cheng Yan, Yan Yan, and Zhou Rui
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract In this work, we investigate six helicity amplitudes of the four-body $$B_{(s)} \rightarrow (\pi \pi )(K\bar{K})$$ B ( s ) → ( π π ) ( K K ¯ ) decays via an angular analysis in the perturbative QCD (PQCD) approach. The $$\pi \pi $$ π π invariant mass spectrum is dominated by the vector resonance $$\rho (770)$$ ρ ( 770 ) together with scalar resonance $$f_0(980)$$ f 0 ( 980 ) , while the vector resonance $$\phi (1020)$$ ϕ ( 1020 ) and scalar resonance $$f_0(980)$$ f 0 ( 980 ) are expected to contribute in the $$K\bar{K}$$ K K ¯ invariant mass range. We extract the two-body branching ratios $$\mathcal{B}(B_{(s)}\rightarrow \rho \phi )$$ B ( B ( s ) → ρ ϕ ) from the corresponding four-body decays $$B_{(s)}\rightarrow \rho \phi \rightarrow (\pi \pi )(K \bar{K})$$ B ( s ) → ρ ϕ → ( π π ) ( K K ¯ ) based on the narrow width approximation. The predicted $$\mathcal{B}(B^0_{s}\rightarrow \rho \phi )$$ B ( B s 0 → ρ ϕ ) agrees well with the current experimental data within errors. The longitudinal polarization fractions of the $$B_{(s)}\rightarrow \rho \phi $$ B ( s ) → ρ ϕ decays are found to be as large as $$90\%$$ 90 % , basically consistent with the previous two-body predictions within uncertainties. In addition to the direct CP asymmetries, the triple-product asymmetries (TPAs) originating from the interference among various helicity amplitudes are also presented for the first time. Since the $$B_s^0\rightarrow \rho ^0\phi \rightarrow (\pi ^+\pi ^-)(K^+K^-)$$ B s 0 → ρ 0 ϕ → ( π + π - ) ( K + K - ) decay is induced by both tree and penguin operators, the values of the $$\mathcal{A}^\textrm{CP}_\textrm{dir}$$ A dir CP and $$\mathcal{A}^{1}_{\text {T-true}}$$ A T-true 1 are calculated to be $$(21.8^{+2.7}_{-3.3})\%$$ ( 21 . 8 - 3.3 + 2.7 ) % and $$(-10.23^{+1.73}_{-1.56})\%$$ ( - 10 . 23 - 1.56 + 1.73 ) % respectively. While for pure penguin decays $$B^0\rightarrow \rho ^0\phi \rightarrow (\pi ^+\pi ^-)(K^+K^-)$$ B 0 → ρ 0 ϕ → ( π + π - ) ( K + K - ) and $$B^+\rightarrow \rho ^+\phi \rightarrow (\pi ^+\pi ^0)(K^+K^-)$$ B + → ρ + ϕ → ( π + π 0 ) ( K + K - ) , both the direct CP asymmetries and “true” TPAs are naturally expected to be zero in the standard model (SM) due to the absence of the weak phase difference. The “fake” TPAs requiring no weak phase difference are usually none zero for all considered decay channels. The sizable “fake” $$\mathcal{A}^{1}_{\text {T-fake}}=(-20.92^{+6.26}_{-2.80})\%$$ A T-fake 1 = ( - 20 . 92 - 2.80 + 6.26 ) % of the $$B^0\rightarrow \rho ^0\phi \rightarrow (\pi ^+\pi ^-)(K^+K^-)$$ B 0 → ρ 0 ϕ → ( π + π - ) ( K + K - ) decay is predicted in the PQCD approach, which provides valuable information on the final-state interactions. The above predictions can be tested by the future LHCb and Belle-II experiments.
- Published
- 2024
- Full Text
- View/download PDF
40. Shadow Enhancement Using 2D Dynamic Stochastic Resonance for Hyperspectral Image Classification.
- Author
-
Liu, Qiuyue, Fu, Min, and Liu, Xuefeng
- Subjects
IMAGE recognition (Computer vision) ,CONVOLUTIONAL neural networks ,STOCHASTIC resonance ,PIXELS ,REMOTE sensing ,DEEP learning - Abstract
With the development of remote sensing technology, classification has become a meaningful way to explore the rich information in hyperspectral images (HSIs). However, various environmental factors may cause noise and shadow areas in HSIs, resulting in weak signals and difficulties in fully utilizing information. In addition, classification methods based on deep learning have made considerable progress, but features extracted from most networks have much redundancy. Therefore, a method based on two-dimensional dynamic stochastic resonance (2D DSR) shadow enhancement and convolutional neural network (CNN) classification combined with an attention mechanism (AM) for HSIs is proposed in this paper. Firstly, to protect the spatial correlation of HSIs, an iterative equation of 2D DSR based on the pixel neighborhood relationship was derived, which made it possible to perform matrix SR in the spatial dimension of the image, instead of one-dimensional vector resonance. Secondly, by using the noise in the shadow area to generate resonance, 2D DSR can help increase the signals in the shadow regions by preserving the spatial characteristics, and enhanced HSIs can be obtained. Then, a 3DCNN embedded with two efficient channel attention (ECA) modules and one convolutional block attention module (CBAM) was designed to make the most of critical features that significantly affect the classification accuracy by giving different weights. Finally, the performance of the proposed method was evaluated on a real-world HSI, and comparative studies were carried out. The experimental results showed that the proposed approach has promising prospects in HSIs' shadow enhancement and information mining. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. Lepton flavour violation in hadron decays of the tau lepton within the littlest Higgs model with T-parity.
- Author
-
Pacheco, Iván and Roig, Pablo
- Subjects
HADRON decay ,HIGGS bosons ,LEPTONS (Nuclear physics) ,DISCRETE symmetries ,NEUTRINOS ,FERMIONS ,PHYSICS - Abstract
We first study the hadronic lepton flavor violating tau decays within the littlest Higgs model with T-parity (including one or two pseudoscalars, or a vector resonance). We consider the case where only T-odd particles and partner fermions contribute, and also its extension including Majorana neutrinos coming from an inverse seesaw. In both cases our mean values lie mostly only one order of magnitude below current upper limits, strengthening the case of searching for these decays in the quest for new physics. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
42. A case study about the mass exclusion limits for the BSM vector resonances with the direct couplings to the third quark generation.
- Author
-
Gintner, Mikuláš and Juráň, Josef
- Subjects
RESONANCE ,QUARKS ,CASE studies - Abstract
The upper bounds that the LHC measurements searching for heavy resonances beyond the Standard model set on the resonance production cross sections are not universal. They depend on various characteristics of the resonance under consideration, like its mass, spin, and its interaction pattern. Their validity is also limited by the assumptions and approximations applied to their calculations. The bounds are typically used to derive the mass exclusion limits for the new resonances. In our work, we address some of the issues that emerge when deriving the mass exclusion limits for the strongly coupled composite S U (2) L + R vector resonance triplet which would interact directly to the third quark generation only. We investigate the restrictions on the applicability of the generally used limit-obtaining procedure to this particular type of vector resonances. We demonstrate that, in this case, it is necessary to consider the bottom quark partonic contents of the proton. Eventually, we find the mass exclusion limits for this resonance triplet for some representative subsets of the parameter space. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
43. Effective field theory for heavy vector resonances coupled to the Standard Model.
- Author
-
Heiles, Mathias, König, Matthias, and Neubert, Matthias
- Abstract
We construct an effective field theory describing the decays of a heavy vector resonance V into Standard Model particles. The effective theory is built using an extension of Soft-Collinear Effective Theory called SCET
BSM , which provides a rigorous framework for parameterizing decay matrix elements with manifest power counting in the ratio of the electroweak scale and the mass of the resonance, λ∼v/mV . Using the renormalization-group evolution of the couplings in the effective Lagrangian, large logarithms associated with this scale ratio can be resummed to all orders. We consider in detail the two-body decays of a heavy Z′ boson and of a Kaluza-Klein gluon at leading and subleading order in λ. We illustrate the matching onto SCETBSM with a concrete example of a UV-complete new-physics model. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
44. DK I = 0,DK¯I = 0, 1 scattering and the Ds0∗(2317) from lattice QCD.
- Author
-
Cheung, Gavin K. C., Thomas, Christopher E., Wilson, David J., Moir, Graham, Peardon, Michael, and Ryan, Sinéad M.
- Abstract
Elastic scattering amplitudes for I = 0 DK and I = 0, 1 D K ¯ are computed in S, P and D partial waves using lattice QCD with light-quark masses corresponding to m
π = 239 MeV and mπ = 391 MeV. The S-waves contain interesting features including a near-threshold JP = 0+ bound state in I = 0 DK, corresponding to the D s 0 ∗ (2317), with an effect that is clearly visible above threshold, and suggestions of a 0+ virtual bound state in I = 0 D K ¯ . The S-wave I = 1 D K ¯ amplitude is found to be weakly repulsive. The computed finite-volume spectra also contain a deeply-bound D* vector resonance, but negligibly small P -wave DK interactions are observed in the energy region considered; the P and D-wave D K ¯ amplitudes are also small. There is some evidence of 1+ and 2+ resonances in I = 0 DK at higher energies. [ABSTRACT FROM AUTHOR]- Published
- 2021
- Full Text
- View/download PDF
45. Signatures of the two K1(1270) poles in D+→νe+VP decay.
- Author
-
Wang, Guan-Ying, Roca, Luis, Wang, En, Liang, Wei-Hong, and Oset, Eulogio
- Subjects
MASS transfer coefficients ,CHIRAL perturbation theory ,QUANTUM numbers ,POLISH people ,VECTOR mesons - Abstract
We analyze theoretically the D + → ν e + ρ K ¯ and D + → ν e + K ¯ ∗ π decays to see the feasibility to check the double pole nature of the axial-vector resonance K 1 (1270) predicted by the unitary extensions of chiral perturbation theory (UChPT). Indeed, within UChPT the K 1 (1270) is dynamically generated from the interaction of a vector and a pseudoscalar meson, and two poles are obtained for the quantum numbers of this resonance. The lower mass pole couples dominantly to K ∗ π and the higher mass pole to ρ K , therefore we can expect that different reactions weighing differently these channels in the production mechanisms enhance one or the other pole. We show that the different final VP channels in D + → ν e + V P weigh differently both poles, and this is reflected in the shape of the final vector-pseudoscalar invariant mass distributions. Therefore, we conclude that these decays are suitable to distinguish experimentally the predicted double pole of the K 1 (1270) resonance. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
46. Estimating the wavelet bispectrum of multiband whistler mode waves.
- Author
-
Shah, M. G., Burgess, D., Kuzichev, Ilya, and Xiaofei Shi
- Subjects
SPACE sciences ,MAGNETOSPHERE ,SPACE astronomy ,SPACE exploration ,WAVELETS (Mathematics) - Abstract
Whistler mode waves are one of the dominant plasma emissions occurring in the Earth's magnetosphere. Using data from the Magnetospheric Multiscale (MMS) mission taken in the outer magnetosphere, we present observations of a multiband whistler event with multiple discrete frequency bands of whistler emission. A newly developed bispectral analysis method, the normalized wavelet bispectrum, is employed to explore the generation mechanism of such whistler mode waves. This method is useful for examining the time-evolving behaviour of coupled oscillatory systems. The wavelet bispectrum analysis of multiband whistlers suggests that the higher-frequency whistler band is possibly generated due to a nonlinear three-wave coupling involving the two lower-frequency whistler bands. The presence of other features such as rising tones provides evidence that multiband whistler events probably involve several different concurrent emission processes. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
47. Study of the axial-vector and tensor resonant contributions to the $$D \rightarrow VP\ell ^+\nu _\ell $$ D → V P ℓ + ν ℓ decays based on SU(3) flavor analysis
- Author
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Yi Qiao, Yue-Xin Liu, Yuan-Guo Xu, and Ru-Min Wang
- Subjects
Astrophysics ,QB460-466 ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract Semileptonic three-body $$D \rightarrow M\ell ^+\nu _\ell $$ D → M ℓ + ν ℓ decays, non-leptonic $$M \rightarrow VP$$ M → V P decays, and semileptonic four-body $$D \rightarrow M(M \rightarrow VP)\ell ^+\nu _\ell $$ D → M ( M → V P ) ℓ + ν ℓ decays are analyzed using the SU(3) flavor symmetry/breaking approach, where $$\ell =e/\mu $$ ℓ = e / μ , $$M=A/T$$ M = A / T , and A/T/V/P denote the axial-vector/tensor/vector/pseudoscalar mesons, respectively. In terms of SU(3) flavor symmetry/breaking, the decay amplitudes of the $$D \rightarrow M \ell ^+ \nu _\ell $$ D → M ℓ + ν ℓ decays and the vertex coefficients of the $$M \rightarrow VP$$ M → V P decays are related. The relevant non-perturbative parameters of the $$D \rightarrow A\ell ^+\nu _\ell $$ D → A ℓ + ν ℓ , $$A \rightarrow VP$$ A → V P , and $$T \rightarrow VP$$ T → V P decays are constrained by the present experimental data, and the non-perturbative parameters of $$D \rightarrow T\ell ^+\nu _\ell $$ D → T ℓ + ν ℓ decays are taken from the results in the light-front quark model since no experimental data are available at present. The branching ratios of the $$D \rightarrow M \ell ^+ \nu _\ell $$ D → M ℓ + ν ℓ , $$M \rightarrow VP$$ M → V P , and $$D\rightarrow M(M\rightarrow VP)\ell ^+\nu _\ell $$ D → M ( M → V P ) ℓ + ν ℓ decays are then predicted. We find that some processes receive both tensor and axial-vector resonant contributions, while other processes receive only axial-vector resonant contributions. In cases where both kinds of resonant contributions exist, the axial-vector contributions are dominant. Some branching ratios with axial-vector resonance states are large, and they may be measured experimentally in the near future. In addition, the sensitivities of the branching ratios of $$D \rightarrow A \ell ^+ \nu _\ell $$ D → A ℓ + ν ℓ and $$A \rightarrow VP$$ A → V P decays to the parameters are also investigated, and some decay branching ratios are found to be sensitive to the non-perturbative parameters.
- Published
- 2024
- Full Text
- View/download PDF
48. Search for Low Mass Vector Resonances Decaying to Quark-Antiquark Pairs in Proton-Proton Collisions at s= TeV
- Author
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Woods, N.
- Published
- 2017
- Full Text
- View/download PDF
49. Scattering of Goldstone bosons and resonance production in a composite Higgs model on the lattice
- Author
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Vincent Drach, Tadeusz Janowski, Claudio Pica, and Sasa Prelovsek
- Subjects
Lattice field theory simulation ,Phenomenological Models ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract We calculate the coupling between a vector resonance and two Goldstone bosons in SU(2) gauge theory with N f = 2 Dirac fermions in the fundamental representation. The considered theory can be used to construct a minimal Composite Higgs models. The coupling is related to the width of the vector resonance and we determine it by simulating the scattering of two Goldstone bosons where the resonance is produced. The resulting coupling is g VPP = 7.8 ± 0.6, not far from g ρππ ≃ 6 in QCD. This is the first lattice calculation of the resonance properties for a minimal UV completion. This coupling controls the production cross section of the lightest expected resonance at the LHC and enters into other tests of the Standard Model, from Vector Boson Fusion to electroweak precision tests. Our prediction is crucial to constrain the model using lattice input and for understanding the behavior of the vector meson production cross section as a function of the underlying gauge theory. We also extract the coupling g VPP KSRF $$ {g}_{\mathrm{VPP}}^{\mathrm{KSRF}} $$ = 9.4 ± 0.6 assuming the vector-dominance and find that this phenomenological estimate slightly overestimates the value of the coupling.
- Published
- 2021
- Full Text
- View/download PDF
50. Top partner-resonance interplay in a composite Higgs framework.
- Author
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Yepes, Juan and Zerwekh, Alfonso
- Subjects
FERMIONS ,STANDARD model (Nuclear physics) ,ELECTRIC dipole moments ,LARGE Hadron Collider ,EQUATIONS of motion ,HIGGS bosons - Abstract
Guided us by the scenario of weak scale naturalness and the possible existence of exotic resonances, we have explored in a Composite Higgs setup the interplay among three matter sectors: elementary, top partners and vector resonances. We parametrize it through explicit interactions of spin-1 -resonances, coupled to the -invariant fermionic currents and tensors presented in this work. Such invariants are built upon the Standard Model fermion sector as well as top partners sourced by the unbroken . The mass scales entailed by the top partner and vector resonance sectors will control the low energy effects emerging from our interplaying model. Its phenomenological impact and parameter spaces have been considered via flavor-dijet processes and electric dipole moments bounds. Finally, the strength of the Nambu-Goldstone symmetry breaking and the extra couplings implied by the top partner mass scales are measured in accordance with expected estimations. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
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