by Cvetan Valeriev Cheshkov. Published: 18 December 2012

The pilot p-Pb run that took place in September was a success. It showed that the LHC is ready for providing us with these precious data. It also led to significant, I would even say, extraordinary physics results.

So far the analysis of the data taken during the pilot run resulted in the publication of three papers. The first two of them, namely the charged-particle multiplicity and the charged-particle spectra, were prepared and submitted shortly after the run. They were the first experimental papers on p-Pb collisions at the LHC. Very recently we also announced striking results on the di-hadron correlations. The analysis of the data revealed a completely unexpected double-ridge structure with so far unknown origin.



p-Pb collision seen by ALICE during the recent pilot run at the LHC


These three papers are already available on the arxiv and can be found at the following links: http://arxiv.org/abs/arXiv:1210.3615 http://arxiv.org/abs/arXiv:1210.4520 http://arxiv.org/abs/arXiv:1212.2001

I take the occasion to congratulate all who contributed to the data taking and its analysis!



An event display from the LHC's first ever proton-lead collisions, measured by the ALICE detector


Looking forward for the long p-Pb run that will take place at the beginning of 2013. The analysis of these data certainly promises to be quite exciting!

With best regards and Seasons Greetings, Cvetan (on behalf of the p-A Task Force)"