Search for an Invisibly Decaying 
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 Boson at Belle II in 
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Adachi, I.; Ahlburg, P.; Aihara, H.; Акопов, Н.; Aloisio, A.; Ky, N. Anh; Asner, D. M.; Atmacan, H.; Aushev, T.; Aushev, V.; Aziz, T.; Babu, V.; Baehr, S.; Bambade, P.; Banerjee, S.; Bansal, V.; Barrett, M.; Baudot, J.; Becker, J.; Behera, P. K.; Bennett, J. V.; Bernieri, E.; Bernlochner, F. U.; Bertemes, M.; Bessner, M.; Bettarini, S.; Bianchi, F.; Biswas, D.; Bożek, A.; Bračko, M.; Branchini, P.; Briere, R. A.; Browder, T. E.; Budano, A.; Burmistrov, L.; Bussino, S.; Campajola, M.; Cao, L.; Casarosa, G.; Cecchi, C.; Červenkov, D.; Chang, M. C.; Cheaib, R.; Chekelian, V.; Chen, Y. Q.; Chen, Y. T.; Cheon, B. G.; Chilikin, K.; Cho, K.; Cho, S.; Choi, S. K.; Choudhury, S.; Cinabro, D.; Corona, L.; Cremaldi, L.; Cunliffe, S.; Czank, T.; Dattola, F.; Cruz-Burelo, E. De La; Nardo, G. De; Nuccio, M. De; Pietro, G. De; Sangro, R. de; Destefanis, M.; Dey, S.; Yta-Hernandez, A. De; Capua, F. Di; Doležal, Z.; Jiménez, I. Domínguez; Dong, T. V.; Dort, K.; Dossett, D.; Dubey, S.; Duell, S.; Dujany, G.; Eidelman, S.; Eliachevitch, M.; Fast, J. E.; Ferber, T.; Ferlewicz, D.; Finocchiaro, G.; Fiore, S.; Fodor, A.; Forti, F.; Fulsom, B. G.; Ganiev, E.; Garcia-Hernández, M.; Garg, R.; Gaur, V.; Gaz, A.; Gellrich, A.; Gemmler, J.; Geßler, Thomas; Giordano, Raffaele; Giri, A.; Gobbo, B.; Godang, R.; Goldenzweig, P.; Golob, B.; Gomis, Pablo; Gradl, W.; Graziani, E.; Greenwald, D.; Guan, Y. H.; Hadjivasiliou, C.; Halder, S.; Hara, T.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hearty, C.; Hedges, M. T.; Cruz, I. Heredia de la; Villanueva, M. Hernández; Hershenhorn, A. D.; Higuchi, T.; Hill, E.; Hoek, M.; Hsu, C.-L.; Hu, Y.; Iijima, T.; Inami, K.; Inguglia, G.; Jabbar, J. Irakkathil; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jacobs, W. W.; Jaffe, D. E.; Jang, E.-J.; Jeon, H. B.; Jia, S.; Jin, Y.; Joo, C.; Joo, K. K.; Kahn, J.; Kakuno, H.; Kaliyar, A. B.; Kandra, J.; Karyan, G.; Kato, Y.; Kawasaki, T.; Kim, B. H.; Kim, C. H.; Kim, D. Y.; Kim, K. H.; Kim, S. H.; Kim, Y. K.; Kim, Y.; Kimmel, T. D.; Kindo, H.; Kleinwort, C.; Kodyš, P.; Koga, T.; Kohani, S.; Komarov, I.; Korpar, S.; Kovalchuk, N.; Kraetzschmar, T. M. G.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kumar, J.; Kumar, Mahesh; Kumar, Rajeev; Kumara, K.; Kurz, S.; Kuzmin, A.; Kwon, Y. J.; Lacaprara, S.; Licata, C. La; Lanceri, L.; Lange, J. S.; Lautenbach, K.; Lee, I. S.; Lee, S. C.; Leitl, P.; Levit, D.; Li, L. K.; Li, Y. B.; Libby, J.; Lieret, K.; Gioi, L. Li; Liptak, Z.; Liu, Q. Y.; Liventsev, D.; Longo, S.; Luo, T.; Maeda, Y.; Maggiora, M.; Manoni, E.; Marcello, S.; Mariñas, C.; Martini, A.; Masuda, M.; Matsuda, T.; Matsuoka, K.; Matvienko, D.; Meggendorfer, F.; Mei, Jincheng; Meier, F.; Merola, M.; Metzner, F.; Milesi, M.; Miller, C.; Miyabayashi, K.; Miyake, H.; Mizuk, R.; Azmi, Khairul; Mohanty, G. B.; Moon, T. J.; Morii, T.; Moser, H. G.; Muêller, F.; Müller, F.; Müller, Th.; Muroyama, G.; Mussa, R.; Nakano, E.; Nakao, M.; Nayak, M.; Nazaryan, G.; Neverov, D.; Niebuhr, C.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Nishimura, M.; Oberhof, B.; Ogawa, K.; Onishchuk, Y.; Ono, H.; Onuki, Y.; Oskin, P.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Paladino, A.; Panta, A.; Paoloni, E.; Park, H.; Paschen, B.; Passeri, A.; Pathak, A.; Paul, S.; Pedlar, T. K.; Peruzzi, I. M.; Peschke, R.; Pestotnik, R.; Piccolo, M.; Piilonen, L. E.; Popov, V.; Praz, C.; Prencipe, E.; Prim, M. T.; Purohit, M.; Rados, P.; Rasheed, R.; Reiter, S.; Remnev, M.; Resmi, P. K.; Ripp-Baudot, I.; Ritter, M.; Rizzo, G.; Rizzuto, L. B.; Robertson, S. H.; Pérez, D. Rodríguez; Roney, J. M.; Rosenfeld, C.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, Deepak Kumar; Sakai, Y.; Sandilya, S.; Sangal, A.; Šantelj, L.; Sartori, P.; Sato, Y.; Savinov, V.; Scavino, B.; Schueler, J.; Schwanda, C.; Seddon, R. M.; Seino, Y.; Selce, A.; Senyo, K.; Sfienti, C.; Shen, C. P.; Shiu, J. G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Sobie, R.; Soffer, A.; Sokolov, A.; Solovieva, E.; Spataro, S.; Spruck, B.; Starič, M.; Stefkova, S.; Stottler, Z. S.; Stroili, R.; Strube, J.; Sumihama, M.; Sumiyoshi, T.; Summers, D. J.; Suzuki, S.; Tabata, M.; Takizawa, M.; Tamponi, U.; Tanaka, S.; Tanida, K.; Taniguchi, N.; Taras, P.; Tenchini, F.; Torassa, E.; Trabelsi, K.; Tsuboyama, T.; Uchida, M.; Unger, K.; Unno, Y.; Uno, S.; Ushiroda, Y.; Vahsen, S.; Tonder, R. Van; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vitale, L.; Vossen, A.; Wakai, M.; Wakeling, H. M.; Abdullah, W. Wan; Wang, C. H.; Wang, M. Z.; Warburton, A.; Watanabe, M.; Webb, J.; Wehle, S.; Wessel, C.; Wiechczynski, J.; Windel, H.; Won, E.; Yabsley, B.; Yamada, S.; Yan, W. B.; Yang, S. B.; Ye, H.; Yin, J. H.; Yonenaga, M.; Yuan, C. Z.; Yusa, Y.; Zani, L.; Zhang, Z.; Zhilich, V.; Zhou, Q.; Zhou, Xiaopeng; Zhukova, V.

doi:10.1103/physrevlett.124.141801

Cited by 57 publications

(43 citation statements)

References 23 publications

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“…Since the 4 body decay easily becomes long-lived for the detector, and anyway X is observed as a missing particle, they provide e + e − → µ ± τ ∓ +missing events at Belle II. 7 To estimate the sensitivity in the mass region, we follow the Belle II analysis searching for the e + e − → e ± µ ∓ +missing events [47]. Note that the τ ∓ subsequently decays into e ∓ νν, and µ ± τ ∓ +missing events eventually provide the µ ± e ∓ +missing events.…”

Section: Sensitivitymentioning

confidence: 99%

Probing μτ flavor-violating solutions for the muon g − 2 anomaly at Belle II

Iguro

Omura

Takeuchi

2020

J. High Energ. Phys.

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The discrepancy between the measured value and the Standard Model prediction of the muon anomalous magnetic moment is one of the most important issues in the particle physics. It is known that introducing a mediator boson X with the μτ lepton flavor violating (LFV) couplings is one good solution to explain the discrepancy, due to the τ mass enhancement in the one-loop correction. In this paper, we study the signal of this model, i.e. the same-sign leptons, in the Belle II experiment, assuming the flavor-diagonal couplings are suppressed. We show that the Belle II experiment is highly sensitive to the scenario in the mediator mass range of O(1–10) GeV, using the e+e−→ μ±τ∓X → μ±μ±τ∓τ∓ process induced by the X .

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Section: Sensitivitymentioning

confidence: 99%

Probing μτ flavor-violating solutions for the muon g − 2 anomaly at Belle II

Iguro

Omura

Takeuchi

2020

J. High Energ. Phys.

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“…The Belle II experiment at the SuperKEKB asymmetric electron-position collider plans to integrate a 50 ab −1 dataset while operating at and near the Υ(4S) resonance, corresponding to a centre-of-mass energy of 10.58 GeV. With this unprecedented dataset, Belle II will search for physics beyond the Standard Model through precision flavour sector measurements and searches for rare/forbidden processes as well as darks sectors [1,2]. Complimentary to the improved statistical precision to be achieved at Belle II, advancements in new experimental techniques can also further enhance Belle II sensitivities to new physics and potentially allow for new measurements.…”

Section: Introductionmentioning

confidence: 99%

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

Longo

Roney

Cunliffe

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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This paper describes the implementation and performance of CsI(Tl) pulse shape discrimination for the Belle II electromagnetic calorimeter, representing the first application of CsI(Tl) pulse shape discrimination for particle identification at an electron-position collider. The pulse shape characterization algorithms applied by the Belle II calorimeter are described. Control samples of γ, µ + , π ± , K ± and p/p are used to demonstrate the significant

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“…Belle II, the successor of Belle, has started and is presently rediscovering rare decays such as B 0 → K * 0 γ and optimising their sensitivity to CP violation [78]. They have already produced their first physics paper with 276 pb −1 [79].The aim is to collect more than 50 ab −1 by 2027.…”

Section: Discussionmentioning

confidence: 99%

“…Conference summary Patrick Koppenburg Recoil mass spectrum in e + e − → µ + µ − Z search [79]In parallel, most of the LHC Run 2 dataset is still to be analysed. In particular the first results from the CMS parked B sample are eagerly awaited.…”

Section: Pos(beauty2019)058mentioning

confidence: 99%

Beauty 2019 — Conference summary

Koppenburg¹

2020

Proceedings of 18th International Conference on B-Physics at Frontier Machines — PoS(Beauty2019)

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Search for an Invisibly Decaying Z′ Boson at Belle II in e+e−→

Cited by 57 publications

References 23 publications

Probing μτ flavor-violating solutions for the muon g − 2 anomaly at Belle II

Probing μτ flavor-violating solutions for the muon g − 2 anomaly at Belle II

CsI(Tl) pulse shape discrimination with the Belle II electromagnetic calorimeter as a novel method to improve particle identification at electron–positron colliders

Beauty 2019 — Conference summary

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