Can you give me one or more Internet references of scientific articles
which document the benefits/lack of benefits(for health and
longevity)of drinking alkalized water to help maintain an alkaline PH
in the body?

If someone has told you that drinking alkalized water is good for you
or for some condition (e.g., preventing bone loss, as I once heard)
they are trying to sell you something. Although technically true that
a higher pH is more likely to prevent dissociation of hydroxyapatite
which your bones are made of, it is practically useless because your
body tightly regulates pH. If you have a pH outside the range of
7.35-7.45 (which is alreadt alkalized) you will die or be in very
serious condition. If you drank alkalized water, you will raise your
pH for about 30 seconds after absorption, but your body would
compensate within one to two breaths (by retaining CO2, which converts
to HCO3- and H+ in water). I couldn't find any research on this on the
pubmed database, probably because you'd have to be a fool to conduct
such research.

There are internet references for scientific research which documents
the benefits and uses of alkaline drinking water. For a comprehensive
listing, go here: http://www.waterionizer.org/site/898596/page/443004
In regard to the comments made to the effect that it does no good to
attempt to influence the pH of the body because the body automatically
corrects pH: this does not take into consideration the effects on the
body of having to continually make such correction. This is a common
fallacy and more can be learned about how alkaline balance actually
works by going here:
http://www.waterionizer.org/site/898596/page/453428 and here:
http://www.waterionizer.org/site/898596/page/452400. I hope this is of
value