# BOOST 2017

Jul 16 – 21, 2017
Embassy Suites Buffalo
US/Eastern timezone

## A study of jet mass distributions with grooming

Jul 18, 2017, 2:00 PM
20m
Embassy Suites Buffalo

#### Embassy Suites Buffalo

200 Delaware Avenue Buffalo, NY 14202

### Speaker

Laís Sarem Schunk (IPhT, CEA - Saclay)

### Description

We perform a phenomenological study of the invariant mass distribution of hadronic jets produced in pp collisions, in conjunction with a groomer, in particular the modified MassDrop Tagger (equivalent to Soft Drop with angular exponent $\beta = 0$). Our calculation resums large logarithms of the jet mass and includes the full dependence on the groomer’s energy threshold $z_\text{cut}$ , and it is matched to fixed-order QCD matrix elements at next-to-leading order. We accounted for non-perturbative contributions by including a correction factor derived from Monte Carlo parton-shower simulations. Furthermore, we consider two different possibilities for the jet transverse momentum: before or after grooming. We show that the former should be preferred for comparisons with upcoming experimental data essentially because the mMDT transverse momentum spectrum is not collinear safe.

### Primary authors

Gregory Soyez (IPhT, CEA Saclay) Laís Sarem Schunk (IPhT, CEA - Saclay) Simone Marzani (SUNY Buffalo)