Prospects of probing theta(13) and neutrino mass hierarchy by supernova neutrinos in kamLAND - INSPIRE

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Prospects of probing theta(13) and neutrino mass hierarchy by supernova neutrinos in kamLAND

Abhijit Bandyopadhyay
(
- Saha Inst.
)
,
Sandhya Choubey
(
- INFN, Trieste and
- SISSA, Trieste
)
,
Srubabati Goswami
(
- Harish-Chandra Res. Inst.
)
,
Kamales Kar
(
- Saha Inst. and
- IMSc, Chennai
)

Dec, 2003

24 pages

e-Print:

hep-ph/0312315 [hep-ph]

Report number:

SINP-TNP-03-44,
SISSA-114-2003-EP

View in:

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Abstract:

In this paper we study the physics potential of the KamLAND detector in probing neutrino oscillation parameters through observation of supernova neutrinos. In particular, we discuss the possibilities of probing the mixing angle

\theta_{13}

and determining the sign of

\Delta m^2_{32}

from the total charged current(CC) event rates on the proton and

^{12}{C}

target, as well as from the CC spectra. We discuss the chances of probing the earth matter effect induced modulations from the observation of CC spectra in the different CC reactions in KamLAND and find the volume required to get a statistically significant signature of the earth matter effect in different energy bins. We also calculate the event rates expected in the neutral current (NC) reactions on Carbon and free proton and investigate if the charged current to neutral current ratios, which are free of the absolute luminosity uncertainty in the supernova neutrino fluxes, can be useful in probing the oscillation parameters.

neutrino: cosmic radiation
supernova
neutrino: emission
neutrino: mixing angle
neutrino: mass
mass: hierarchy
neutrino nucleon: interaction
geophysics: effect
nucleus nucleus: nuclear reaction
carbon

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Abhijit Bandyopadhyay
(
- Saha Inst.
)
,
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(
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)
,
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(
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)
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(
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)
,
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(
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)
,
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(
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)
,
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(
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)

•
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(
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)
,
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(
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)
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,
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,
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