FIG. 2: Effective mass plots for the boost-projected neutron correlation functions. For each value of the electric field strength, the curved band shows the result of the simultaneous fit to both boost-projected correlation functions using Eq. (20). The band accounts for the uncertainty in the extracted ground state energy, E ( n ). The flat band shows the extracted value of E ( n ) with the uncertainty. 10 functions, and the extracted parameters are collected in Table I. For the largest value of the field strength, E , the confidence of the fit is frankly poor, and so we are careful about using this data point. The correlation function fits are carried out on each bootstrap ensemble. In partic- ular, we arrive at an ensemble of ground state energies and ground state magnetic cou- plings for each magnitude of the electric field E , or equivalently the corresponding integer n . These ensembles we generically denote by {O$_{i}$ ( n ) } , where i indexes the bootstrap ensemble, i = 1 , . . . N , and O represents either the ground state energy E , or magnetic coupling µ . As 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Plus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 1 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Minus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 1 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Plus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 2 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Minus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 2 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Plus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 3 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Minus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 3 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Plus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 4 5 10 15 20 25 30 0.20 0.22 0.24 0.26 0.28 0.30 t GLYPH<Slash1> a$_{t}$ a t M eff GLYPH<Minus> GLYPH<LParen1> t GLYPH<RParen1> N: n GLYPH<Equal> 4