FASER is one of the promising experiments which search for long-lived particles in beyond standard models.
We study the sensitivity to the charged lepton flavor violating (cLFV) decays of the long-lived particles by FASER experiment.
We find that FASER can search the cLFV decays of these particles in the parameter region which survives the current severe experimental constraints on cLFV coupling.
Forward emissions represent a unique opportunity to test perturbative QCD in new, and so far unexplored, kinematical regimes. In the semi-hard regime, where $s>>Q^2>>\Lambda_{QCD}$, pure fixed-order predictions need to be supplemented by an all-order resummation which takes into account the effect of large energy-type logarithms. The Balistky-Fadin-Kuraev-Lipatov (BFKL) approach is established...
Inclusive as well as exclusive forward emissions are widely recognized as excellent channels to access the nucleon structure in the high-energy/small-$x$ regime. Here, several phenomenological analyses have been proposed so far, this allowing us to probe kinematic ranges in the intersection corners of different approaches. At large transverse momenta, a high-energy factorization (HEF) formula...
We introduce a new approach to the Higgs naturalness problem, where the value of the Higgs mass is tied to cosmic stability and the possibility of a large observable Universe. The Higgs mixes with the dilaton of a CFT sector whose true ground state has a large negative vacuum energy. If the Higgs VEV is non-zero and below ~TeV, the CFT also admits a second metastable vacuum, where the...
Axion-like particles (ALPs) are ubiquitous in models of new physics explaining some of the most pressing puzzles of the Standard Model. However, until relatively recently, little attention has been paid to its interplay with flavour. In this work, we study in detail the phenomenology of ALPs that exclusively interact with up-type quarks at the tree-level, which arise in some well-motivated...
Abstract: First studies of the projected physics reach of FASER2 have been available for some time [arXiv:1811.12522], and possible detector technologies for FASER2 have previously been presented at the FPF kick-off meeting. We will show updated studies of the expected FASER2 reach taking into account recent developments in planning for the FPF, notably the possible layouts of the underground...
In this talk, I discuss the production of dark vectors and scalars via proton bremsstrahlung, making use of a model that accurately captures the underlying nucleon scattering cross-section in the forward direction due to pomeron exchange.
We report an update on plans for milliQan in Run 3 (https://arxiv.org/abs/2104.07151). Having secured the necessary funding, we plan to construct two detectors, including a novel slab detector configuration, for the LHC Run 3. The dataset provided by a prototype scintillator-based detector has been used to characterise the performance of these detectors and provide an accurate background...
