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  1. Article ; Online: Consistent Theory of Kinetic Mixing and the Higgs Low-Energy Theorem.

    Bauer, Martin / Foldenauer, Patrick

    Physical review letters

    2022  Volume 129, Issue 17, Page(s) 171801

    Abstract: Extensions of the standard model of particle physics with new Abelian gauge groups allow for kinetic mixing between the new gauge bosons and the hypercharge gauge boson, resulting in mixing with the photon. In many models, the mixing with the hypercharge ...

    Abstract Extensions of the standard model of particle physics with new Abelian gauge groups allow for kinetic mixing between the new gauge bosons and the hypercharge gauge boson, resulting in mixing with the photon. In many models, the mixing with the hypercharge gauge boson captures only part of the kinetic mixing term with the photon, since the new gauge bosons can also mix with the neutral component of the SU(2)_{L} gauge bosons. We take these contributions into account and present a consistent description of kinetic mixing for general Abelian gauge groups both in the electroweak symmetric and the broken phase. We identify an effective operator that captures the kinetic mixing with SU(2)_{L} and demonstrate how renormalizable contributions arise if the charged fields only obtain their masses from electroweak symmetry breaking. For the first time, a low-energy theorem for the couplings of novel Abelian gauge bosons with the standard model Higgs boson is derived from the one-loop kinetic mixing amplitudes.
    Language English
    Publishing date 2022-10-31
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208853-8
    ISSN 1079-7114 ; 0031-9007
    ISSN (online) 1079-7114
    ISSN 0031-9007
    DOI 10.1103/PhysRevLett.129.171801
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

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  2. Article ; Online: Unleashing the full power of LHCb to probe stealth new physics.

    Borsato, M / Cid Vidal, X / Tsai, Y / Vázquez Sierra, C / Zurita, J / Alonso-Álvarez, G / Boyarsky, A / Brea Rodríguez, A / Buarque Franzosi, D / Cacciapaglia, G / Casais Vidal, A / Du, M / Elor, G / Escudero, M / Ferretti, G / Flacke, T / Foldenauer, P / Hajer, J / Henry, L /
    Ilten, P / Kamenik, J / Kishor Jashal, B / Knapen, S / Kostiuk, Igor / Redi, F L / Low, M / Liu, Z / Oyanguren Campos, A / Polycarpo, E / Ramos, M / Ramos Pernas, M / Salvioni, E / Rangel, M S / Schäfer, R / Sestini, L / Soreq, Y / Tran, V Q / Timiryasov, I / van Veghel, M / Westhoff, S / Williams, M / Zupan, J

    Reports on progress in physics. Physical Society (Great Britain)

    2022  Volume 85, Issue 2

    Abstract: In this paper, we describe the potential of the LHCb experiment to detect stealth physics. This refers to dynamics beyond the standard model that would elude searches that focus on energetic objects or precision measurements of known processes. Stealth ... ...

    Abstract In this paper, we describe the potential of the LHCb experiment to detect stealth physics. This refers to dynamics beyond the standard model that would elude searches that focus on energetic objects or precision measurements of known processes. Stealth signatures include long-lived particles and light resonances that are produced very rarely or together with overwhelming backgrounds. We will discuss why LHCb is equipped to discover this kind of physics at the Large Hadron Collider and provide examples of well-motivated theoretical models that can be probed with great detail at the experiment.
    Language English
    Publishing date 2022-02-16
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 205657-4
    ISSN 1361-6633 ; 0034-4885
    ISSN (online) 1361-6633
    ISSN 0034-4885
    DOI 10.1088/1361-6633/ac4649
    Database MEDical Literature Analysis and Retrieval System OnLINE

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