Abstract
The completion of Run 1 of the Large Hadron Collider (LHC) at CERN has seen the discovery of the Higgs boson and an unprecedented number of precise measurements of the Standard Model, and Run 2 has begun to provide the first data at higher energy. The high-luminosity upgrade of the LHC (HL-LHC) and the four experiments (ATLAS, CMS, ALICE, and LHCb) will exploit the full potential of the collider to discover and explore new physics beyond the Standard Model. We review the experimental challenges and the physics opportunities in proton–proton collisions at the HL-LHC.
Highlights
Focusing on flavor physics in the forward region, LHCb operated and at a lower instantaneous luminosity and collected a total of 3 fb−1
This review briefly summarizes the highlights of the Large Hadron Collider (LHC) Run 1 physics results, provides an overview of the detector and accelerator upgrades, and describes the performance of the experiments for the high-luminosity upgrade of the LHC (HL-LHC) pp program with an emphasis on physics opportunities
The Higgs boson couplings are inferred from basic measurements of cross sections for different production modes multiplied by branching fractions into different final states
Summary
The Higgs boson couplings are inferred from basic measurements of cross sections for different production modes multiplied by branching fractions into different final states. Searches for strongly produced objects benefit from increasing s , such as quantum black holes in theories of extra dimensions, which have very high pp production cross sections New particles such as vectorlike quarks, which would provide an alternative way of canceling top quark contributions to the Higgs mass, have been explored up to nearly 1 TeV. In addition to the total inelastic cross section, many production rates were measured to be in broad agreement with the SM, including inclusive jets, W and Z bosons (with jets), dibosons, and ttand (t-channel) single top quarks. A small but intriguing excess of diphoton events with a mass around 750 GeV provoked much speculation [29, 30], and more data are eagerly awaited
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