Search for Dark Photons with the FASER detector at the LHC
Search for Dark Photons with the FASER detector at the LHC
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DOI：
10.1016/j.physletb.2023.138378
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发表时间：
2023-08
影响因子：
4.4
通讯作者：
H. Abreu;J. Anders;C. Antel;A. Ariga;T. Ariga;Jeremy Atkinson;F. Bernlochner;T. Boeckh;J. Boyd;L. Brenner;F. Cadoux;D. Casper;Charlotte Cavanagh;Xin Chen;A. Coccaro;M. D'Onofrio;Ansh Desai;S. Dmitrievsky;C. Dozen;Yannick Favre;D. Fellers;Jonathan L. Feng;C. A. Fenoglio;D. Ferrere;I. Galon;S. Gibson;S. Gonzalez-Sevilla;Y. Gornushkin;C. Gwilliam;D. Hayakawa;S. Hsu;Zhen Hu;G. Iacobucci;T. Inada;S. Jakobsen;H. Joos;E. Kajomovitz;H. Kawahara;Alex Keyken;F. Kling;D. Koeck;Umut Kose;R. Kotitsa;S. Kuehn;H. Lefebvre;L. Levinson;Ke Li;Jinfeng Liu;J. MacDonald;C. Magliocca;Fulvio Martinelli;J. Mcfayden;S. Meehan;M. Milanesio;T. Moretti;M. Munker;M. Nakamura;T. Nakano;F. Neuhaus;L. Nevay;Ken Ohashi;H. Otono;H. Pang;L. Paolozzi;B. Petersen;M. T. Prim-M. T.-Prim-2210706108;M. Queitsch-Maitland;H. Rokujo;E. Ruiz-Choliz;Jorge Sabater-Iglesias;J. Salfeld-Nebgen;Osamu Sato;P. Scampoli;K. Schmieden;M. Schott;A. Sfyrla;S. Shively;Y. Takubo;Noshin Tarannum;O. Theiner;E. Torrence;S. Trojanowski;S. Vasina;B. Vormwald;Di Wang;Eli Welch;Samuel Zahorec;S. Zambito
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文献类型：
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作者：
H. Abreu;J. Anders;C. Antel;A. Ariga;T. Ariga;Jeremy Atkinson;F. Bernlochner;T. Boeckh;J. Boyd;L. Brenner;F. Cadoux;D. Casper;Charlotte Cavanagh;Xin Chen;A. Coccaro;M. D'Onofrio;Ansh Desai;S. Dmitrievsky;C. Dozen;Yannick Favre;D. Fellers;Jonathan L. Feng;C. A. Fenoglio;D. Ferrere;I. Galon;S. Gibson;S. Gonzalez-Sevilla;Y. Gornushkin;C. Gwilliam;D. Hayakawa;S. Hsu;Zhen Hu;G. Iacobucci;T. Inada;S. Jakobsen;H. Joos;E. Kajomovitz;H. Kawahara;Alex Keyken;F. Kling;D. Koeck;Umut Kose;R. Kotitsa;S. Kuehn;H. Lefebvre;L. Levinson;Ke Li;Jinfeng Liu;J. MacDonald;C. Magliocca;Fulvio Martinelli;J. Mcfayden;S. Meehan;M. Milanesio;T. Moretti;M. Munker;M. Nakamura;T. Nakano;F. Neuhaus;L. Nevay;Ken Ohashi;H. Otono;H. Pang;L. Paolozzi;B. Petersen;M. T. Prim-M. T.-Prim-2210706108;M. Queitsch-Maitland;H. Rokujo;E. Ruiz-Choliz;Jorge Sabater-Iglesias;J. Salfeld-Nebgen;Osamu Sato;P. Scampoli;K. Schmieden;M. Schott;A. Sfyrla;S. Shively;Y. Takubo;Noshin Tarannum;O. Theiner;E. Torrence;S. Trojanowski;S. Vasina;B. Vormwald;Di Wang;Eli Welch;Samuel Zahorec;S. Zambito
LHC的FASER实验旨在寻找在ATLAS相互作用点的质子-质子碰撞中产生的轻、弱相互作用粒子，这些粒子在遥远的方向上运动。第一个结果来自于寻找衰变为电子-正电子对的暗光子，使用的数据集对应于2022年LHC运行3中在质心能量s= 13.6 TeV时收集的27.0 fb− 1的积分光度。在一个几乎无背景的分析中没有发现任何事件，产生了世界领先的暗光子约束，耦合为10 × 10− 5− 1× 10− 4，质量为17 MeV− 70 MeV。这个分析也被用来探测U（1）B模型中质量规范玻色子的参数空间，其中耦合g B <$5 × 10− 6− 2× 10− 5和质量<$15 MeV− 40 MeV首次被排除。
The FASER experiment at the LHC is designed to search for light, weakly-interacting particles produced in proton-proton collisions at the ATLAS interaction point that travel in the far-forward direction. The first results from a search for dark photons decaying to an electron-positron pair, using a dataset corresponding to an integrated luminosity of 27.0 fb− 1 collected at centre-of-mass energy s= 13.6 TeV in 2022 in LHC Run 3, are presented. No events are seen in an almost background-free analysis, yielding world-leading constraints on dark photons with couplings ϵ∼ 2× 10− 5− 1× 10− 4 and masses∼ 17 MeV− 70 MeV. The analysis is also used to probe the parameter space of a massive gauge boson from a U (1) B− L model, with couplings g B− L∼ 5× 10− 6− 2× 10− 5 and masses∼ 15 MeV− 40 MeV excluded for the first time.