## Thursday, June 13, 2013 ... //

### International Linear Collider: Technical Design Report out

Yesterday, as I learned from the CERN website and a CERN press release, the Linear Collider Collaboration (obtained by merging the officials behind ILC and CLIC) has released the ILC Technical Design Report, including a free and colorful 60-page PDF booklet.

It may be meaningful to mention Table 2.1 of that PDF file that describes the planned experiments with their center-of-mass energy.

At $91 \GeV$, the plan is to study $e^+e^-\to Z$, ultraprecision electroweak, and at $160 \GeV$, one may study ultra-precision $W$ mass via $e^+e^-\to WW$. A big part of the early experiments would be $e^+e^-\to Zh$ at $250\GeV$ where this process peaks. This would be good for a precise measurement of the Higgs boson's interactions.

Center-of-mass energies $350$-$400 \GeV$ would reveal top quark couplings from the $t\bar t$ final state, precision $W$ couplings from the $WW$ final state, and precision Higgs coupling from the $\nu\bar\nu h$ final state.

At $500 \GeV$ and $700$-$1000\GeV$, there would be various channels that would search for a $Z'$ boson, Higgs compositeness, Higgs self-coupling, extended Higgs states; and the search for SUSY via the $\tilde \chi\tilde\chi$ pair production of the Majorana particles (e.g. those of the dark matter) and from the pair production of scalar top quarks (stops) $\tilde t \tilde t^*$.

The PDF booklet may tell you a lot about the electric fields, radio frequencies, two detectors that the collider should boast, not to mention a huge list of roughly 100 contributing institutes that harbor 1,000 scientists and engineers who have worked on the report.