Recent Research

제목 - 설명
Search for Z ′ → μ + μ − in the L μ − L τ gauge-symmetric model at Belle 등록일 2023.03.17 조회수 85
AUTHORS & AFFILIATIONS T. Czank³⁸, I. Jaegle^10,85, A. Ishikawa^19,15, I. Adachi^19,15, K. Adamczyk⁶³, H. Aihara⁸⁸, D. M. Asner³, T. Aushev²¹, R. Ayad⁸², V. Babu⁸, S. Bahinipati²⁵, P. Behera²⁸, J. Bennett⁵³, F. Bernlochner², M. Bessner¹⁸, V. Bhardwaj²⁴, B. Bhuyan²⁶, T. Bilka⁵, J. Biswal³⁶, A. Bobrov^4,67, G. Bonvicini⁹³, A. Bozek⁶³, M. Bračko⁵⁰, T. E. Browder¹⁸, M. Campajola^33,58, L. Cao², D. Červenkov⁵, M.-C. Chang¹¹, A. Chen⁶⁰, B. G. Cheon¹⁷, K. Chilikin⁴⁵, H. E. Cho¹⁷, K. Cho⁴⁰, Y. Choi⁸⁰, S. Choudhury²⁷, D. Cinabro⁹³, S. Das⁴⁹, N. Dash²⁸, G. De Nardo^33,58, R. Dhamija²⁷, F. Di Capua^33,58, Z. Doležal⁵, T. V. Dong¹², S. Eidelman^4,67,45, T. Ferber⁸, D. Ferlewicz⁵², B. G. Fulsom⁶⁹, R. Garg⁷⁰, V. Gaur⁹², A. Garmash^4,67, A. Giri²⁷, P. Goldenzweig³⁷, B. Golob^46,36, O. Grzymkowska⁶³, Y. Guan⁷, K. Gudkova^4,67, C. Hadjivasiliou⁶⁹, O. Hartbrich¹⁸, K. Hayasaka⁶⁵, H. Hayashii⁵⁹, M. T. Hedges¹⁸, M. Hernandez Villanueva⁵³, T. Higuchi³⁸, W.-S. Hou⁶², C.-L. Hsu⁸¹, T. Iijima^57,56, K. Inami⁵⁶, G. Inguglia³¹, R. Itoh^19,15, M. Iwasaki⁶⁸, Y. Iwasaki¹⁹, W. W. Jacobs²⁹, E.-J. Jang¹⁶, S. Jia¹², Y. Jin⁸⁸, C. W. Joo³⁸, K. K. Joo⁶, K. H. Kang⁴³, G. Karyan⁸, T. Kawasaki³⁹, H. Kichimi¹⁹, C. Kiesling⁵¹, B. H. Kim⁷⁶, C. H. Kim¹⁷, D. Y. Kim⁷⁹, el. ABSTRACT We search for a new gauge boson $Z^{'}$ that couples only to heavy leptons and their corresponding neutrinos in the process $e^{+} e^{-} \to Z^{'} (\to μ^{+} μ^{-}) μ^{+} μ^{-}$ , using a $643 {fb}^{- 1}$ data sample collected by the Belle experiment at or near the $Υ (1 S, 2 S, 3 S, 4 S, 5 S)$ resonances at the KEKB collider. While previous searches for $Z^{'}$ performed a data-based estimation of the initial state radiation effect, our search for the $Z^{'}$ is the first to include effects due to initial state radiation in the signal simulated samples that were used in estimating the detection efficiency. No signal is observed in the $Z^{'}$ mass range of $0.212 - 10 GeV / c^{2}$ , and we set an upper limit on the coupling strength, $g^{'}$ , constraining the possible $Z^{'}$ contribution to the anomalous magnetic dipole moment of the muon. DOI:https://doi.org/10.1103/PhysRevD.106.012003

제목 - 설명

Search for Z ′ → μ + μ − in the L μ − L τ gauge-symmetric model at Belle
- 등록일
  
  2023.03.17
- 조회수
  
  85

AUTHORS & AFFILIATIONS

T. Czank³⁸, I. Jaegle^10,85, A. Ishikawa^19,15, I. Adachi^19,15, K. Adamczyk⁶³, H. Aihara⁸⁸, D. M. Asner³, T. Aushev²¹, R. Ayad⁸², V. Babu⁸, S. Bahinipati²⁵, P. Behera²⁸, J. Bennett⁵³, F. Bernlochner², M. Bessner¹⁸, V. Bhardwaj²⁴, B. Bhuyan²⁶, T. Bilka⁵, J. Biswal³⁶, A. Bobrov^4,67, G. Bonvicini⁹³, A. Bozek⁶³, M. Bračko⁵⁰, T. E. Browder¹⁸, M. Campajola^33,58, L. Cao², D. Červenkov⁵, M.-C. Chang¹¹, A. Chen⁶⁰, B. G. Cheon¹⁷, K. Chilikin⁴⁵, H. E. Cho¹⁷, K. Cho⁴⁰, Y. Choi⁸⁰, S. Choudhury²⁷, D. Cinabro⁹³, S. Das⁴⁹, N. Dash²⁸, G. De Nardo^33,58, R. Dhamija²⁷, F. Di Capua^33,58, Z. Doležal⁵, T. V. Dong¹², S. Eidelman^4,67,45, T. Ferber⁸, D. Ferlewicz⁵², B. G. Fulsom⁶⁹, R. Garg⁷⁰, V. Gaur⁹², A. Garmash^4,67, A. Giri²⁷, P. Goldenzweig³⁷, B. Golob^46,36, O. Grzymkowska⁶³, Y. Guan⁷, K. Gudkova^4,67, C. Hadjivasiliou⁶⁹, O. Hartbrich¹⁸, K. Hayasaka⁶⁵, H. Hayashii⁵⁹, M. T. Hedges¹⁸, M. Hernandez Villanueva⁵³, T. Higuchi³⁸, W.-S. Hou⁶², C.-L. Hsu⁸¹, T. Iijima^57,56, K. Inami⁵⁶, G. Inguglia³¹, R. Itoh^19,15, M. Iwasaki⁶⁸, Y. Iwasaki¹⁹, W. W. Jacobs²⁹, E.-J. Jang¹⁶, S. Jia¹², Y. Jin⁸⁸, C. W. Joo³⁸, K. K. Joo⁶, K. H. Kang⁴³, G. Karyan⁸, T. Kawasaki³⁹, H. Kichimi¹⁹, C. Kiesling⁵¹, B. H. Kim⁷⁶, C. H. Kim¹⁷, D. Y. Kim⁷⁹, el.

ABSTRACT

We search for a new gauge boson $Z^{'}$ that couples only to heavy leptons and their corresponding neutrinos in the process $e^{+} e^{-} \to Z^{'} (\to μ^{+} μ^{-}) μ^{+} μ^{-}$ , using a $643 {fb}^{- 1}$ data sample collected by the Belle experiment at or near the $Υ (1 S, 2 S, 3 S, 4 S, 5 S)$ resonances at the KEKB collider. While previous searches for $Z^{'}$ performed a data-based estimation of the initial state radiation effect, our search for the $Z^{'}$ is the first to include effects due to initial state radiation in the signal simulated samples that were used in estimating the detection efficiency. No signal is observed in the $Z^{'}$ mass range of $0.212 - 10 GeV / c^{2}$ , and we set an upper limit on the coupling strength, $g^{'}$ , constraining the possible $Z^{'}$ contribution to the anomalous magnetic dipole moment of the muon.

DOI:https://doi.org/10.1103/PhysRevD.106.012003