ATLAS Collaboration

Double parton scattering in pA collisions at the LHC revisited

“…It was shown in Ref. [34] that E T in this kinematics is not sensitive to production of hadrons at forward rapidities. The E T distribution as a function of the number of collisions ν (and thus on the impact parameter B) is presented in Refs.…”

“…The E T distribution as a function of the number of collisions ν (and thus on the impact parameter B) is presented in Refs. [33][34][35] (see also the related discussion in Ref. [31]).…”

Nonminimal dark sectors: Mediator-induced decay chains and multijet collider signatures

“…A variety of different search strategies sensitive to particular kinds of physics beyond the SM which give rise to large numbers of jets have been implemented by both the ATLAS and CMS collaborations [22,23,32,33,41,42]. Some of these turn out to be more suitable for detecting and constraining the large-jet-multiplicity events produced by the mediator-induced decay cascades in our example model than others.…”

“…Searches for events involving a large number N jet ≥ 8 of isolated, high-p T jets with or without / E T [22,23] have been performed, motivated in part by the predictions of both R-parityconserving [24][25][26][27][28] and R-parity-violating [29] supersymmetry and in part by the predictions of other scenarios, such as those involving colorons [30] or additional quark generations [31]. Searches have also been performed for events involving significant numbers of highp T final-state objects -regardless of their identityin conjunction with a large scalar sum of p T over all such objects in the event [32,33]. Searches of this sort are motivated largely by the prospect of observing signatures associated with extended objects such as miniature black holes [34,35], string balls [36,37], and sphalerons [38][39][40].…”

Implications of extra dimensions on the effective charge and the beta function in quantum electrodynamics

“…The phenomenological impact of 1 extra dimension on observables sensitive to new-physics effects has been a subject of interest in the literature. This is the case, for instance, of Higgs physics [9], flavor physics [7,10], the electroweak gauge sector [11], B physics [12], and collider physics [13,14]. All these investigations show that the one-loop contributions of the infinite number of KK modes lead to amplitudes free of divergences.…”