update a vertex smearing parameters for 2025 OO MC

[liuxiaoyuyuyu]

PR description:

This PR adds a vertex smearing for 2025 OO MC. Beamspot position derived from runs 394153-394217, excluding runs with VdM scans, i.e 394154 and 394217. BPIX barycentre locations are officially provided by Tracker Alignment Group (twiki)

PR validation:

This PR has been modeled after a similar PR for 2025 pO collisions: #48480

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

We will need a backport for CMSSW_15_0_X

[cmsbuild]

cms-bot internal usage

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-48579/45541

[cmsbuild]

A new Pull Request was created by @liuxiaoyuyuyu for master.

It involves the following packages:

• Configuration/StandardSequences (operations)
• IOMC/EventVertexGenerators (simulation)

@antoniovilela, @civanch, @cmsbuild, @davidlange6, @fabiocos, @kpedro88, @mandrenguyen, @mdhildreth, @rappoccio can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @Martin-Grunewald, @VinInn, @VourMa, @dgulhan, @fabiocos, @felicepantaleo, @grzanka, @makortel, @missirol, @mmusich, @mtosi, @rovere, @sameasy, @slomeo this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

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[kpedro88]

I think a new file should be created rather than editing the 2023PbPb file to contain 2025OO. In fact, the above modification to Configuration/StandardSequences/python/VtxSmeared.py will not run properly unless this is done.

[liuxiaoyuyuyu]

The vertex smearing parameters need to be updated again after the BS fit. So I am closing this PR, will open a new one after the final values are obtained.