Top pair invariant mass distribution: a window on new physics

By R. Frederix, F. Maltoni. 2007

216 citations recorded by the source corpus.

We explore in detail the physics potential of a measurement of the t invariant mass distribution. First, we assess the accuracy of the best available predictions for this observable and find that in the low invariant mass region, the shape is very well predicted and could be used to perform a top mass measurement. Second, we study the effects of a heavy s-channel resonance on the t invariant mass distribution in a model independent way. We provide the necessary Monte Carlo tools to perform the search and outline a simple three-step analysis.

Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/029a7f31ac7e5948517266742b3cb621de9b821f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

In Nuclear and High Energy Physics

Citations in the corpus

Fully covering the MSSM Higgs sector at the LHC (2015, unknown): “[145–149].”
Efficient identification of boosted semileptonic top quarks at the LHC (2010, unknown): “13 (+PYTHIA) [20, 21] at 14 TeV collision energy.”
Non-resonant new physics in top pair production at hadron colliders (2010, background): “A large effort has been devoted to search for new physics in tt resonances [9–11].”
Measurement of the differential cross section for top quark pair production in pp collisions at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} (2015, background): “In addition, the top quark plays a relevant role in theories beyond the SM, and such differential measurements are therefore expected to be sensitive to new phenomena [1].”
Towards jetography (2009, background): “This is motivated in part because high-mass tt̄ resonances are a feature of many new physics scenarios (see for example [190, 178, 191, 192, 193] and references therein).”
The hunt for the rest of the Higgs bosons (2015, background): “It has been known since the seminal work of [42] (also studied further in [57], and recently emphasized in [38]) that this channel provides an interesting and challenging opportunity for hadron colliders.”
Constraints on the gluon PDF from top quark pair production at hadron colliders (2013, background): “The second example is the high mass tail of the invariant mass distribution in topquark production, relevant for many BSM searches [22, 23], which is also related with the top quark forward-backward asymmetry measured at the Tevatron.”
Simplified dark matter models with two Higgs doublets: I. Pseudoscalar mediators (2017, background): “The observed interference pattern can be either constructive or destructive, leading to a rather complex signature with a peak-dip structure in the mtt̄ spectrum [52, 53].”
Top Quark Physics at the LHC (2008, unknown): “For example interactions predicted by theories such as [14][15][16]: pp → X → t t̄ (Extra dimentions with resonance X) (4) pp → b′b̄′ →W−tW+t̄ (Extra generation b′) (5) pp → g̃ g̃ → g̃t g̃t̄ (Top color with new gauge boson g̃) (6) can produce top quarks in the final state.”