Abstract
It has recently been argued that atoms and molecules may become good targets for determining neutrino parameters still undetermined, if the atomic/molecular process is enhanced by a new kind of coherence.We compute the photon energy spectrum rate arising from coherent radiative neutrino pair emission processes of metastable excited states of I2 and its isovalent molecules, |Av} → |Xv '} + γ + νiνj and |A' v} → |Xv '} + γ + νiνj , with γ an IR photon and νi ( j ) the i ( j )th neutrino mass eigenstates, and show how fundamental neutrino parameters may be determined. Energies of electronically excited states of I2, including the effect of spin-orbit couplings, were calculated by the multiconfigurational second-order perturbation (CASPT2) method. Summation over many vibrational levels of intermediate states is fully incorporated. Unlike atomic candidates with a much larger energy difference, such as Xe, I2 transitions from a vibrational level A(v = 0) to X(v' = 24) give us an opportunity to determine the mass type (Majorana vs Dirac distinction) and theMajorana CPV (charge-conjugation parity violating) phases, although the rate is much smaller.
| Original language | English |
|---|---|
| Article number | ptt118 |
| Journal | Progress of Theoretical and Experimental Physics |
| Volume | 2013 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2013 |
Fingerprint
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Iodine molecule for neutrino mass spectroscopy : Ab initio calculation of spectral rate. / Tashiro, Motomichi; Ehara, Masahiro; Kuma, Susumu; Miyamoto, Yuki; Sasao, Noboru; Uetake, Satoshi; Yoshimura, Motohiko.
In: Progress of Theoretical and Experimental Physics, Vol. 2013, No. 11, ptt118, 11.2013.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Iodine molecule for neutrino mass spectroscopy
T2 - Ab initio calculation of spectral rate
AU - Tashiro, Motomichi
AU - Ehara, Masahiro
AU - Kuma, Susumu
AU - Miyamoto, Yuki
AU - Sasao, Noboru
AU - Uetake, Satoshi
AU - Yoshimura, Motohiko
PY - 2013/11
Y1 - 2013/11
N2 - It has recently been argued that atoms and molecules may become good targets for determining neutrino parameters still undetermined, if the atomic/molecular process is enhanced by a new kind of coherence.We compute the photon energy spectrum rate arising from coherent radiative neutrino pair emission processes of metastable excited states of I2 and its isovalent molecules, |Av} → |Xv '} + γ + νiνj and |A' v} → |Xv '} + γ + νiνj , with γ an IR photon and νi ( j ) the i ( j )th neutrino mass eigenstates, and show how fundamental neutrino parameters may be determined. Energies of electronically excited states of I2, including the effect of spin-orbit couplings, were calculated by the multiconfigurational second-order perturbation (CASPT2) method. Summation over many vibrational levels of intermediate states is fully incorporated. Unlike atomic candidates with a much larger energy difference, such as Xe, I2 transitions from a vibrational level A(v = 0) to X(v' = 24) give us an opportunity to determine the mass type (Majorana vs Dirac distinction) and theMajorana CPV (charge-conjugation parity violating) phases, although the rate is much smaller.
AB - It has recently been argued that atoms and molecules may become good targets for determining neutrino parameters still undetermined, if the atomic/molecular process is enhanced by a new kind of coherence.We compute the photon energy spectrum rate arising from coherent radiative neutrino pair emission processes of metastable excited states of I2 and its isovalent molecules, |Av} → |Xv '} + γ + νiνj and |A' v} → |Xv '} + γ + νiνj , with γ an IR photon and νi ( j ) the i ( j )th neutrino mass eigenstates, and show how fundamental neutrino parameters may be determined. Energies of electronically excited states of I2, including the effect of spin-orbit couplings, were calculated by the multiconfigurational second-order perturbation (CASPT2) method. Summation over many vibrational levels of intermediate states is fully incorporated. Unlike atomic candidates with a much larger energy difference, such as Xe, I2 transitions from a vibrational level A(v = 0) to X(v' = 24) give us an opportunity to determine the mass type (Majorana vs Dirac distinction) and theMajorana CPV (charge-conjugation parity violating) phases, although the rate is much smaller.
UR - http://www.scopus.com/inward/record.url?scp=84893814410&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893814410&partnerID=8YFLogxK
U2 - 10.1093/ptep/ptt118
DO - 10.1093/ptep/ptt118
M3 - Article
AN - SCOPUS:84893800294
VL - 2013
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
SN - 2050-3911
IS - 11
M1 - ptt118
ER -