# EPS HEP 2013 Stockholm

17-24 July 2013
KTH and Stockholm University Campus
Europe/Stockholm timezone

## New results on the proton spin-dependent structure function g1p at COMPASS with E=200 GeV

18 Jul 2013, 17:26
17m
E1 (KTH Campus)

### E1

#### KTH Campus

Talk presentation QCD

### Speaker

Elena Zemlyanichkina (Joint Inst. for Nuclear Research (RU))

### Description

New results of the double spin asymmetry A1p and the spin-dependent structure function of the proton g1p as a function of $x_{Bj}$ and $Q^2$ will be presented. New COMPASS data on longitudinal polarized NH$_3$ target were collected during the year 2011 with beam of positive muons with energy E = 200 GeV}. It allows us to cover low $x$ region down to 0.025 in the range $Q^{2}>1~\mbox{GeV}/c^{2}$ for the first time.

### Primary author

Elena Zemlyanichkina (Joint Inst. for Nuclear Research (RU))

 Slides