<div dir="ltr">Hi Andy,<div><br></div><div>Thanks for the suggestions. I did manage to create a fatjet with smeared constituents now, with one caveat. I had to switch to using charged particles only to use track efficiency, in order not to have 10 GeV pT cut which other smeared objects have. </div><div><br></div><div>Something we can follow up in the May meeting, if and when that happens.</div><div><br></div><div>Cheers,</div><div>Deepak</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 2, 2018 at 3:15 PM, Andy Buckley <span dir="ltr"><<a href="mailto:andy.buckley@cern.ch" target="_blank">andy.buckley@cern.ch</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>The latter should be possible, but not currently via the normal projection route: SmearedParticles inherits from ParticleFinder, while FastJets accepts a more specific FinalState projection as its source of particles. This is something to generalise, but last time I tried it turned out to be more involved than you might expect.</div><br><div>You should be able to use FastJets "interactively" via its calc() mechanism, though, e.g. somefastjetsproj.calc(<wbr>smearedparticlesproj.<wbr>particles()); somefastjetsproj.jets(). We could/should also make that neater...</div><br><div>In response to the earlier question (I'm just back online after holiday), there's nothing specific to particle charge about the SmearedParticles mechanism, but the generic built-in smearing functions are mostly for well-isolated, fairly hard, identified particles. Constituent-level smearing for jet (substructure) reco would require something more specific than the built-ins -- that's part of why we <em>don't</em> currently smear the constituents of smeared jets (although I forget, do we rescale their momenta to be consistent with the jet momentum?) You can write your own constituent-smearing function fairly easily, though, with as simple or complex a smearing algorithm as you need.</div><br><div>Andy</div><br><div><u></u><div><table cellpadding="0" cellspacing="0"><tbody><tr><td colspan="2"><div style="padding-bottom:15px"><div><strong>Dr Andy Buckley, Lecturer / Royal Society University Research Fellow</strong></div><div>Particle Physics Experiment Group, University of Glasgow</div></div></td></tr><tr><td style="vertical-align:top"></td><td><div style="font-size:0.9em;white-space:nowrap;border-left:2px solid gray;margin-left:20px;padding-left:20px"><div><div></div><div></div></div></div></td></tr></tbody></table></div><u></u></div><div><div class="h5"><div class="m_421982385088972362gmail_quote_attribution">On Feb 28 2018, at 7:16 pm, Deepak Kar <<a href="mailto:deepak.kar@cern.ch" target="_blank">deepak.kar@cern.ch</a>> wrote:</div></div></div><blockquote><br><div><div><div class="h5"><div><div>Hi all,</div><div><br></div><div>Following up on my previous email, is there a way I can use SmearedParticles as inputs to jet forming?</div><div><br></div><div>Thanks,</div><div>Deepak</div></div><div><br><div><div>On Mon, Feb 26, 2018 at 8:05 PM, Deepak Kar <<a href="mailto:deepak.kar@cern.ch" title="mailto:deepak.kar@cern.ch" target="_blank">deepak.kar@cern.ch</a>> wrote:</div><blockquote><div><div>Dear experts,</div><div><br></div><div>I am trying to calculate some jet substructure variables (using fastjet contrib) of a smeared jet. Now it looks like only the jet is smeared, and the constituent information is lost. I guess the right way will be to smear the constituents before making the jet, but I could not see a generic smearing for charged and neutral particles. I can probably hack the electron smearing to apply it on cnfs, but is there an elegant way?</div><div><br></div><div>Thanks,</div><div><div>Deepak</div><div><br></div><div><span style="color:#888888">--</span></div><div><div><span style="color:#888888">Deepak Kar</span></div><div><span style="color:#888888">University of Witwatersrand</span></div><div><span style="color:#888888">Room PM15, School of Physics</span></div><div><span style="color:#888888">(0027) 011-7176958 (office) (0027) 0736944181 (mobile)</span></div><br><div><span style="color:#888888">While at CERN:</span></div><div><span style="color:#888888">Building 1, R-016</span></div><div><span style="color:#888888">(0041) 0767321349 (mobile)</span></div><br><div><span style="color:#888888">While at USA:</span></div><div><span style="color:#888888">(001) </span><span style="color:#888888"><a href="tel:(330)%20998-1500" title="tel:(330)%20998-1500" target="_blank">330-998-1500</a></span><span style="color:#888888"> (mobile)</span></div></div></div></div></blockquote></div><br><br><div><br></div><div>--</div><div><div>Deepak Kar</div><div>University of Witwatersrand</div><div>Room PM15, School of Physics</div><div>(0027) 011-7176958 (office) (0027) 0736944181 (mobile)</div><br><div>While at CERN:</div><div>Building 1, R-016</div><div>(0041) 0767321349 (mobile)</div><br><div>While at USA:</div><div>(001) <a href="tel:(330)%20998-1500" value="+13309981500" target="_blank">330-998-1500</a> (mobile)</div></div></div></div></div><div>______________________________<wbr>_________________</div><div>Rivet mailing list</div><div><a href="mailto:Rivet@projects.hepforge.org" target="_blank">Rivet@projects.hepforge.org</a></div><div><a href="https://www.hepforge.org/lists/listinfo/rivet" target="_blank">https://www.hepforge.org/<wbr>lists/listinfo/rivet</a></div></div></blockquote></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature">Deepak Kar<br>University of Witwatersrand<br>Room PM15, School of Physics<br>(0027) 011-7176958 (office) (0027) 0736944181 (mobile)<br><br>While at CERN:<br>Building 1, R-016<br>(0041) 0767321349 (mobile)<br><br>While at USA:<br>(001) 330-998-1500 (mobile)</div> </div>