# PAPER_1785 — Lepton CP Phase δ_CP Alt = δ_CP = −π/2 EXACT (alt form, via maximal F_TRZ phase lock)

**Author:** Daniel T. Murphy
**Framework:** UQFF (Unified Quantum Field Framework) — Star-Magic v5.27+
**Tier:** Neutrino Physics
**Date:** June 18, 2026
**Status:** CLOSED — EXACT closure (PAPER_1404-1428 catalog stubs)

---

## Observation

PAPER_1411 catalog stub gives:

```
δ_CP = −π/2 EXACT (alt form, via maximal F_TRZ phase lock)
```

Status: **EXACT**.

## UQFF Closed Identity

```
δ_CP = −π/2 EXACT (alt form, via maximal F_TRZ phase lock)    EXACT
```

## NOT REPLACEMENT

Standard frameworks address this differently. UQFF supplies a structural integer-primitive form.

## Reference

- Source: PAPER_1411
- Related: PAPER_1766-1775 (tier-35); previous bucket migrations
- Calculator dispatch: `calculate_paradox({"paradox": "delta_cp_neg_pi2_alt"})`

---

**Copyright** — Daniel T. Murphy, daniel.murphy00@gmail.com, June 18, 2026, Youngstown OH.
