From 25b01407267409818c1abce6cb1af6afea2b3059 Mon Sep 17 00:00:00 2001
From: akshaya <99753263+AkshayaVijay@users.noreply.github.com>
Date: Fri, 31 May 2024 15:12:34 -0500
Subject: [PATCH] Update the localDistXZ paramter in BEMC.cc (#1478)

The clustering parameter, localDistXZ is changed from {40 mm, 40mm} to
{80mm, 80mm}.

### Briefly, what does this PR introduce?
Minimizes the cluster splitting at the pseudorapidities corresponding to
forward and backward region. The results can be seen here:

https://docs.google.com/presentation/d/1DympCgYqOKZBqyOqESEXCtlv073pGnkf266O1KRoba8/edit?usp=sharing

### What kind of change does this PR introduce?
- [x] Bug fix (issue #1289 __)
- [ ] New feature (issue #__)
- [ ] Documentation update
- [ ] Other: __

### Please check if this PR fulfills the following:
- [x] Tests for the changes have been added
- [x] Documentation has been added / updated
- [x] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?

### Does this PR change default behavior?
---
 src/detectors/BEMC/BEMC.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/detectors/BEMC/BEMC.cc b/src/detectors/BEMC/BEMC.cc
index 9ec0b7c119..10dbd0bee2 100644
--- a/src/detectors/BEMC/BEMC.cc
+++ b/src/detectors/BEMC/BEMC.cc
@@ -79,7 +79,7 @@ extern "C" {
           "EcalBarrelScFiProtoClusters", {"EcalBarrelScFiRecHits"}, {"EcalBarrelScFiProtoClusters"},
           {
             .sectorDist = 50. * dd4hep::mm,
-            .localDistXZ = {40 * dd4hep::mm, 40 * dd4hep::mm},
+            .localDistXZ = {80 * dd4hep::mm, 80 * dd4hep::mm},
             .splitCluster = false,
             .minClusterHitEdep = 5.0 * dd4hep::MeV,
             .minClusterCenterEdep = 100.0 * dd4hep::MeV,