(a) A writ of habeas corpus also may be prosecuted on the
basis that expert testimony relating to intimate partner battering
and its effects, within the meaning of Section 1107 of the Evidence
Code, was not received in evidence at the trial court proceedings
relating to the prisoner's incarceration, and is of such substance
that, had it been received in evidence, there is a reasonable
probability, sufficient to undermine confidence in the judgment of
conviction, that the result of the proceedings would have been
different. Sections 1260 to 1262, inclusive, apply to the prosecution
of a writ of habeas corpus pursuant to this section. As used in this
section, "trial court proceedings" means those court proceedings
that occur from the time the accusatory pleading is filed until and
including judgment and sentence.
   (b) This section is limited to violent felonies as specified in
subdivision (c) of Section 667.5 that were committed before August
29, 1996, and that resulted in judgments of conviction after a plea
or trial as to which expert testimony admissible pursuant to Section
1107 of the Evidence Code may be probative on the issue of
culpability.
   (c) If a petitioner for habeas corpus under this section has
previously filed a petition for writ of habeas corpus, it is grounds
for denial of the new petition if a court determined on the merits in
the prior petition that the omission of expert testimony relating to
battered women's syndrome or intimate partner battering and its
effects at trial was not prejudicial and did not entitle the
petitioner to the writ of habeas corpus.
   (d) For purposes of this section, the changes that become
effective on January 1, 2005, are not intended to expand the uses or
applicability of expert testimony on battering and its effects that
were in effect immediately prior to that date in criminal cases.
   (e) This section shall remain in effect only until January 1,
2020, and as of that date is repealed, unless a later enacted
statute, that is enacted before January 1, 2020, deletes or extends
that date.