Search for heavy isosinglet neutrino in e+e− annihilation at LEP

Achard, P.; Адриани, О.; Aguilar-Benı́tez, M.; Alcaraz, J.; Alemanni, G.; Allaby, J.; Aloisio, A.; Alviggi, M. G.; Anderhub, H.; Andreev, V.; Anselmo, F.; Arefiev, A.; Azemoon, T.; Aziz, T.; Baarmand, M. M.; Bagnaia, P.; Bajo, A.; Baksay, G.; Baksay, L.; Baldew, S.V.; Banerjee, S.; Barczyk, A.; Barillère, R.; Bartalini, P.; Basile, M.; Batalova, N.; Battiston, R.; Bay, A.; Becattini, F.; Becker, U.; Behner, F.; Bellucci, L.; Berbeco, R.; Berdugo, J.; Berges, P.; Bertucci, B.; Betev, B. L.; Biasini, M.; Biland, A.; Blaising, J. J.; Blyth, S.; Bobbink, G. J.; Böhm, A.; Boldizsár, L.; Borgia, B.; Bourilkov, D.; Bourquin, M.; Braccini, S.; Branson, J. G.; Brochu, F. M.; Buijs, A.; Burger, J. D.; Burger, W. J.; Cai, X. D.; Capell, M.; Romeo, G.; Carlino, G.; Cartacci, A. M.; Casaus, J.; Cavallari, F.; Cavallo, N.; Cecchi, C.; Cerrada, M.; Chamizo, M.; Chang, Y. H.; Chemarin, M.; Chen, A.; Chen, G.; Chen, G.M.; Chen, H.F.; Chen, H.S.; Chiefari, G.; Cifarelli, L.; Cindolo, F.; Clare, I.; Clare, R.; Coignet, G.; Colino, N.; Costantini, S.; Cruz, B. De La; Cucciarelli, S.; Dai, T.; Dalen, J. A. van; Asmundis, R. de; Déglon, P.; Debreczeni, J.; Degré, A.; Deiters, K.; Volpe, D. della; Delmeire, E.; Denes, P.; DeNotaristefani, F.; Salvo, A. De; Diemoz, M.; Dierckxsens, M.; Dierendonck, D. van; Dionisi, C.; Dittmar, M.; Doria, A.; Dova, M. T.; Duchesneau, D.; Duinker, P.; Echenard, B.; Eline, A.; Mamouni, H. El; Engler, A.; Eppling, F. J.; Ewers, A.; Extermann, P.; Falagán, M. A.; Falciano, S.; Favara, A.; Fay, J.; Fedin, O. L.; Felcini, M.; Ferguson, T.; Fesefeldt, H.; Fiandrini, E.; Field, J. H.; Filthaut, F.; Fisher, P. H.; Fisher, W.; Fisk, I.; Forconì, G.; Freudenreich, K.; Furetta, C.; Galaktionov, Yu.; Ganguli, S. N.; Garcı́a-Abia, P.; Gataullin, M.; Gentile, S.; Giagu, S.; Gong, Z. F.; Grenier, G.; Grimm, O.; Gruenewald, M. W.; Guida, M.; Gulik, R. van; Gupta, Virendra K.; Gurtu, A.; Gutay, L.; Haas, D.; Hatzifotiadou, D.; Hebbeker, T.; Hervé, A.; Hirschfelder, J.; Hofer, H.; Holzner, G.; Hou, S.; Hu, Y.; Jin, B. N.; Jones, L. W.; Jong, P. de; Josa-Mutuberrı́a, I.; Käfer, D.; Kaur, M.; Kienzle‐Focacci, M. N.; Kim, J.K.; Kirkby, J.; Kittel, W.; Klimentov, A.; König, A. C.; Kopál, M.; Koutsenko, V.; Kräber, M.; Kraemer, R. W.; Krenz, W.; Krüger, A.; Kunin, A.; Guevara, P. Ladrón de; Laktineh, I. B.; Landi, G.; Lebeau, M.; Lebedev, A.; Lebrun, P.; Lecomte, P.; Lecoq, P.; Coultre, P. Le; Lee, H.J.; Goff, J. M. Le; Leiste, R.; Levtchenko, P.; Li, C.; Likhoded, S.; Lin, C. H.; Lin, W.; Linde, F.; Lista, L.; Liu, Z.A.; Lohmann, W.; Longo, E.; Lu, Y. S.; Lübelsmeyer, K.; Luci, C.; Luckey, D.; Luminari, L.; Lustermann, W.; Wen-Gan, Ma; Malgeri, L.; Малинин, А.; Mañá, C.; Mangeol, D.; Mans, J.; Martin, J. P.; Marzano, F.; Mazumdar, K.; McNeil, R. R.; Mele, S.; Merola, L.; Meschini, M.; Metzger, W. J.; Mihul, A.; Milcent, H.; Mirabelli, G.; Mnich, J.; Mohanty, G. B.; Muanza, G. S.; Muijs, A. J.M.; Musicar, B.; Musy, M.; Nagy, S.; Napolitano, M.; Nessi‐Tedaldi, F.; Newman, H. B.; Nießen, T.; Nisati, A.; Nowak, H.; Ofierzynski, R. A.; Organtini, G.; Palomares, C.; Pandoulas, D.; Paolucci, P.; Paramatti, R.; Passaleva, G.; Patricelli, S.; Paul, T.; Pauluzzi, M.; Paus, C.; Pauß, F.; Pedace, M.; Pensotti, S.; Perret-Gallix, D.; Petersen, B. A.; Piccolo, D.; Pierella, F.; Piroué, P.; Pistolesi, E.; Plyaskin, V.; Pohl, M.; Pojidaev, V.; Postema, H.; Pothier, J.; Prokofiev, D.; Quartieri, J.; Rahal-Callot, G.; Rahaman, M. A.; Raics, P.; Raja, N.; Ramelli, R.; Rancoita, P.G.; Ranieri, R.; Raspereza, A.; Razis, P. A.; Ren, D.; Rescigno, M.; Reucroft, S.; Riemann, S.; Riles, K.; Roe, B. P.; Romero, L.; Rosca, A.; Rosier‐Lees, S.; Roth, Stefan; Rosenbleck, C.; Roux, B.; Rubio, J. A.; Ruggiero, G.; Rykaczewski, H.; Sakharov, A.; Saremi, S.; Sarkar, S.; Salicio, J.; Sánchez, E.; Sanders, M. P.; Schäfer, C.; Schegelsky, V. A.; Schmidt-Kaerst, S.; Schmitz, D.; Schopper, H.; Schotanus, D. J.; Schwering, G.; Sciacca, C.; Servoli, L.; Shevchenko, S.; Shivarov, N.; Shoutko, V.; Shumilov, E.; Shvorob, A.; Siedenburg, T.; Son, D. C.; Спиллантини, П.; Steuer, M.; Stickland, D.; Stoyanov, B.; Straessner, A.; Sudhakar, K.; Sultanov, G.; Sun, L. Z.; Sushkov, S.; Suter, H.; Swain, J.; Szillási, Z.; Tang, X. W.; Tarján, P.; Tauscher, L.; Taylor, L.; Tellili, B.; Teyssier, D.; Timmermans, C.; Ting, Samuel C.C.; Ting, S. M.; Tonwar, S. C.; Töth, J.; Tully, C.; Tung, K. L.; Uchida, Y.; Ulbricht, J.; Valente, E.; Veszprémi, V.; Vesztergombi, G.; Vetlitsky, I.; Vicinanza, D.; Viertel, G.; Villa, S.; Vivargent, M.; Vlachos, S.; Vodopianov, I.; Vogel, H.; Vogt, H.; Vorobiev, I.; Vorobyov, A. A.; Wadhwa, M.; Walle, R. T. Van de; Wallraff, W.; Wang, M.; Wang, X.L.; Wang, Z.M.; Weber, M.; Wienemann, P.; Wilkens, H. G.; Wu, S. X.; Wynhoff, S.; Xia, L.; Xu, Z.; Yamamoto, J.; Yang, B. Z.; Yang, C. G.; Yang, Hai; Yang, Min; Yeh, S. C.; Zalite, A.; Zalite, Yu.; Zhang, Z.P.; Zhao, J.; Zhu, G. Y.; Zhu, R. Y.; Zhuang, H.L.; Zichichi, A.; Zilizi, G.; Zimmermann, B.; Zöller, Margot

doi:10.1016/s0370-2693(01)00993-5

Cited by 80 publications

(84 citation statements)

References 41 publications

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“…The reconstructed invariant mass of the heavy neutrino would manifest as a peak in the invariant mass distribution. The bounds of [31] are of the same order as the ones presented here.…”

Section: Search For Sterile Neutrinos In 4 Final States At Lep-iisupporting

confidence: 58%

See 1 more Smart Citation

Testing sterile neutrino extensions of the Standard Model at future lepton colliders

Antusch

Fischer

2015

J. High Energ. Phys.

168

212

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Extending the Standard Model (SM) with sterile ("right-handed") neutrinos is one of the best motivated ways to account for the observed neutrino masses. We discuss the expected sensitivity of future lepton collider experiments for probing such extensions. An interesting testable scenario is given by "symmetry protected seesaw models", which theoretically allow for sterile neutrino masses around the electroweak scale with up to order one mixings with the light (SM) neutrinos. In addition to indirect tests, e.g. via electroweak precision observables, sterile neutrinos with masses around the electroweak scale can also be probed by direct searches, e.g. via sterile neutrino decays at the Z pole, deviations from the SM cross section for four lepton final states at and beyond the WW threshold and via Higgs boson decays. We study the present bounds on sterile neutrino properties from LEP and LHC as well as the expected sensitivities of possible future lepton colliders such as ILC, CEPC and FCC-ee (TLEP).

show abstract

“…The reconstructed invariant mass of the heavy neutrino would manifest as a peak in the invariant mass distribution. The bounds of [31] are of the same order as the ones presented here.…”

Section: Search For Sterile Neutrinos In 4 Final States At Lep-iisupporting

confidence: 58%

“…A different analysis searching for sterile neutrinos beyond the Z mass threshold has been conducted by the L3 collaboration [31]. They consider the production of active and sterile neutrino and the subsequent decay chain N → e W → e j(j), where j is a hadronic jet.…”

Section: Search For Sterile Neutrinos In 4 Final States At Lep-iimentioning

confidence: 99%

Testing sterile neutrino extensions of the Standard Model at future lepton colliders

Antusch

Fischer

2015

J. High Energ. Phys.

168

212

View full text Add to dashboard Cite

show abstract

“…The other existing limits from direct searches at LEP [58] and at the LHC [59] as well as from low-energy observables [60] are all weaker than the limits shown here.…”

Section: A Improved Limit On Light-heavy Neutrino Mixingcontrasting

confidence: 88%

TeV-scale left-right symmetry and large mixing effects in neutrinoless double beta decay

2015

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We analyze various contributions to neutrinoless double beta decay (0νββ) in a TeV-scale Left-Right Symmetric Model (LRSM) for type-I seesaw dominance. We find that the momentum-dependent effects due to W L − W R exchange (λ-diagram) and W L − W R mixing (η-diagram) could give dominant contributions to the 0νββ amplitude in a wide range of the LRSM parameter space. In particular, for a relatively large W L − W R mixing, the η-contribution by itself could saturate the current experimental limit on the 0νββ half-life, thereby providing stringent constraints on the relevant LRSM parameters, complementary to the indirect constraints derived from lepton flavor violating observables. In a simplified scenario parametrized by a single light-heavy neutrino mixing, the inclusion of the λ and η contributions leads to significantly improved 0νββ constraints on the light-heavy neutrino mixing as well as on the W L − W R mixing parameters. We also present a concrete TeV-scale LRSM setup, where the mixing effects are manifestly enhanced, and discuss the interplay between 0νββ, lepton flavor violation and electric dipole moment constraints.

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“…The initial numbers of background events (see below Table 1) correspond to the statistics that would be collected at the CMS detector for the integrated luminosity process. This background was important in the heavy neutrino search at LEP [27]. It was simulated with lepton decay modes of Figure 7), has been used to suppress this kind of background.…”

Section: The Backgroundmentioning

confidence: 99%