首次在13 TeV质子-质子对撞中使用完整的MoEDAL捕获探测器寻找磁单极子。

First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions.

作者信息

Acharya B, Alexandre J, Benes P, Bergmann B, Bernabéu J, Bevan A, Branzas H, Burian P, Campbell M, Cecchini S, Cho Y M, de Montigny M, De Roeck A, Ellis J R, El Sawy M, Fairbairn M, Felea D, Frank M, Hays J, Hirt A M, Janecek J, Kalliokoski M, Korzenev A, Lacarrère D H, Leroy C, Levi G, Lionti A, Mamuzic J, Maulik A, Margiotta A, Mauri N, Mavromatos N E, Mermod P, Mieskolainen M, Millward L, Mitsou V A, Orava R, Ostrovskiy I, Ouimet P-P, Papavassiliou J, Parker B, Patrizii L, Păvălaş G E, Pinfold J L, Popa L A, Popa V, Pozzato M, Pospisil S, Rajantie A, Ruiz de Austri R, Sahnoun Z, Sakellariadou M, Santra A, Sarkar S, Semenoff G, Shaa A, Sirri G, Sliwa K, Soluk R, Spurio M, Staelens M, Suk M, Tenti M, Togo V, Tuszyński J A, Upreti A, Vento V, Vives O, Wall A

机构信息

Theoretical Particle Physics and Cosmology Group, Physics Department, King's College, London, United Kingdom.

IEAP, Czech Technical University in Prague, Prague, Czech Republic.

出版信息

Phys Rev Lett. 2021 Feb 19;126(7):071801. doi: 10.1103/PhysRevLett.126.071801.

DOI:10.1103/PhysRevLett.126.071801

PMID:33666471

Abstract

The MoEDAL trapping detector consists of approximately 800 kg of aluminum volumes. It was exposed during run 2 of the LHC program to 6.46 fb^{-1} of 13 TeV proton-proton collisions at the LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in the trapping detector was sought by passing the aluminum volumes comprising the detector through a superconducting quantum interference device (SQUID) magnetometer. The presence of a trapped dyon would be signaled by a persistent current induced in the SQUID magnetometer. On the basis of a Drell-Yan production model, we exclude dyons with a magnetic charge ranging up to five Dirac charges (5g_{D}) and an electric charge up to 200 times the fundamental electric charge for mass limits in the range 870-3120 GeV and also monopoles with magnetic charge up to and including 5g_{D} with mass limits in the range 870-2040 GeV.

摘要

莫伊达尔俘获探测器由约800千克铝块组成。在大型强子对撞机（LHC）项目的第2阶段运行期间，它在LHCb相互作用点接受了6.46 fb⁻¹的13 TeV质子 - 质子碰撞。通过将构成探测器的铝块穿过超导量子干涉装置（SQUID）磁力计，来寻找俘获探测器中捕获的双荷子（带有电荷和磁荷的粒子）的证据。SQUID磁力计中感应出的持续电流将表明存在被俘获的双荷子。基于德雷尔 - 扬产生模型，对于质量限制在870 - 3120 GeV范围内的双荷子，我们排除了磁荷高达五个狄拉克电荷（5g_D）且电荷高达基本电荷200倍的情况；对于质量限制在870 - 2040 GeV范围内的磁单极子，我们也排除了磁荷高达并包括5g_D的情况。