Neutral ZUFOs in CAL

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Long-lived neutral hadrons
Faridah Mohamad Idris Wan Ahmad Tajuddin Wan
Abdullah Zainol Abidin Ibrahim Burhanudin
Kamaluddin Universiti Malaya, Kuala Lumpur
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Motivation

• Feasible?
• n (c? 1011 m), K0L (c? 15 m)
• neutrons baryon production, isospin symmetry w
  proton?, as decay daughters
• K0L as decay daughters, cf K0S, cf K, CP?

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Cuts

• Neutral Zufos objects
• Uncharged object-i tufo(4,i)31
• 0 track, 1 island, use CAL
• Hadrons
• ZufoEemc(i) lt 0.3ZufoEcal(i)
• More than 70 of Zufos energy should be
  deposited in HACs
• In barrel region
• 17o lt ? lt 163o

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Data_07p_GR reconstructed variables of LLNH
What happens at 10 Gev?
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BeautyDIS067p_GR reconstructed variables of LLNH
aa
a
Beauty067p_GR reconstructed variables of LLNH
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CharmDIS067p_GR reconstructed variables of LLNH
DijetLF05GR reconstructed variables of LLNH
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Candidate psi from Beauty067p_GR

• Decay channel

Comparison with Monte Carlo varible when
fmck_prt85 (psi)
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Candidate psi from BeautyDIS067p_GR

• Decay channel

Comparison with Monte Carlo varible when
fmck_prt85 (psi)
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Candidate psi from CharmDIS067p_GR

• Decay channel

Comparison with Monte Carlo varible when
fmck_prt85 (psi)
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Candidate psi from DijetLF05GR

• Decay channel

Comparison with Monte Carlo varible when
fmck_prt85 (psi)
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Conclusions

• Feasible
• Refine ? search
• Baryon production - compare n production with
  rates in MC models
• Compare n vs p production
• Compare K0L vs K0S production

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Beauty067p_GR reconstructed variables of LLNH
candidate
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DijetLF05GR reconstructed variables of LLNH
candidate